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freescale semiconductor data sheet: technical data ? 2006 freescale semiconductor, inc. all rights reserved. freescale reserves the right to change th e detail specifications as may be required to permit improvements in the design of its products. this hardware specificati on is primarily concerned with the mpc7457; however, unless otherwise noted, all information here also applies to the mpc7447. the mpc7457 and mpc7447 are implementations of the powerpc? microprocessor family of reduced instruction set computer (risc) microprocessors. this ha rdware specification describes pertinent el ectrical and physical characteristics of th e mpc7457. for functional characteristics of the processor, refer to the mpc7450 risc microprocessor family user?s manual . to locate any published updates for this hardware specification, refer to the website listed on the back page of this document. mpc7457ec rev. 8, 04/2013 contents 1. overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 2. features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 3. comparison with the mpc7455, mpc7445, mpc7450, mpc7451, and mpc7441 . . . . . . . . . . . . 9 4. general parameters . . . . . . . . . . . . . . . . . . . . . . . . . . 11 5. electrical and thermal characteristics . . . . . . . . . . . 11 6. pin assignments . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 7. pinout listings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 8. package description . . . . . . . . . . . . . . . . . . . . . . . . . 44 9. system design information . . . . . . . . . . . . . . . . . . . 50 11. document revision history . . . . . . . . . . . . . . . . . . . 68 10. part numbering and marking . . . . . . . . . . . . . . . . . . 65 mpc7457 risc microprocessor
mpc7457 risc microprocessor hardware specifications, rev. 8 overview freescale semiconductor 2 1 overview the mpc7457 is the fourth implementa tion of the fourth generation (g4) microprocessors from freescale. the mpc7457 implements the full powerpc 32-bit architecture and is targ eted at networking and computing systems applications. the mpc7457 consis ts of a processor core, a 512-kbyte l2, and an internal l3 tag and controller that support a glueless backside l3 cache through a dedicated high-bandwidth interface. the mpc7447 is identical to the mpc7457 except that it does not support the l3 cache interface. figure 1 shows a block diagram of the mpc7457. the co re is a high-performance superscalar design supporting a double-precision floating-point unit and a simd multimedia unit. the memory storage subsystem supports the mpx bus protocol and a subs et of the 60x bus protocol to main memory and other system res ources. the l3 interface supports 1, 2, or 4 mbytes of external sram for l3 cache and/or private memo ry data. for systems im plementing 4 mbytes of sram, a maximum of 2 mbytes may be used as cache; the rema ining 2 mbytes must be private memory. note that the mpc7457 is a footprint-compatible, drop-in replacement in a mpc7455 application if the core power supply is 1.3 v. 2features this section summarizes featur es of the mpc7457 implementation of the powerpc architecture. major features of the mpc7457 are as follows: ? high-performance, superscalar microprocessor ? as many as four instructions can be fetc hed from the instruction cache at a time. ? as many as three instructions can be dispatched to the issue queues at a time. ? as many as 12 instructions can be in the instruction queue (iq). ? as many as 16 instructions can be at some stage of execution simultaneously. ? single-cycle execution for most instructions ? one instruction per clock cycle throughput for most instructions ? seven-stage pipeline control ? eleven independent execution uni ts and three register files ? branch processing unit (bpu ) features static and dynamic branch prediction ? 128-entry (32-set, four-way set associative) branch target in struction cache (btic), a cache of branch instructions that have been encount ered in branch/loop code sequences. if a target instruction is in the btic, it is fetched into the instruction queue a cycle sooner than it can be made available from the inst ruction cache. typically , a fetch that hits the btic provides the first four instructions in the target stream. ? 2048-entry branch history (bht) with 2 bits per entry for 4 levels of prediction?not-taken, strongly not-taken, taken, and strongly taken ? up to three outstanding speculative branches
features mpc7457 risc microprocessor hardware specifications, rev. 8 freescale semiconductor 3 ? branch instructions that do not update the count register (ctr) or li nk register (lr) are often removed from the instruction stream. ? eight-entry link register stack to predict the target address of branch conditional to link register ( bclr ) instructions
mpc7457 risc microprocessor hardware specifications, rev. 8 features freescale semiconductor 4 figure 1. mpc7457 block diagram + integer reservation station unit 2 + integer reservation station unit 2 additional features ? time base counter/decrementer ? clock multiplier ? jtag/cop interface ? thermal/power management ? performance monitor + + x fpscr fpscr pa + x instruction unit instruction queue (12-word) 96-bit (3 instructions) reservation integer 128-bit (4 instructions) 32-bit floating- point unit 64-bit reservation load/store unit (ea calculation) finished 32-bit completion unit completion queue (16-entry) ta g s 32-kbyte d cache 36-bit 64-bit integer stations (2) reservation station reservation stations (2) fpr file 16 rename buffers stations (2-entry) gpr file 16 rename buffers reservation station vr file 16 rename buffers 64-bit 128-bit 128-bit completes up completed instruction mmu srs (shadow) 128-entry ibat array itlb ta g s 32-kbyte i cache stores stores load miss vector to u c h queue (3) vr issue fpr issue branch processing unit ctr lr btic (128-entry) bht (2048-entry) fetcher gpr issue (6-entry/3-issue) (4-entry/2-issue) (2-entry/1-issue) dispatch unit data mmu srs (original) 128-entry dbat array dtlb vector touch engine 32-bit ea l1 castout status l2 store queue (l2sq) vector fpu reservation station reservation station reservation station vector integer unit 1 vector integer unit 2 vector permute unit line ta g s block 0 (32-byte) status block 1 (32-byte) memory subsystem snoop push/ interventions l1 castouts bus accumulator l1 push (4) unit 2 unit 1 to three per clock instructions l1 load queue (llq) l1 load miss (5) cacheable store request(1) instruction fetch (2) l1 service l1 store queue (lsq) l3 cache controller 1 l3cr status ta g s bus accumulator block 0/1 line system bus interface l2 prefetch (3) 64-bit data (8-bit parity) external sram address bus data bus queues castout bus store queue push load queue (11) queue (9)/ queue (10) 2 notes: 1. the l3 cache interface is not implemented on the mpc7447. 2. the castout queue and push queue share resources such for a combined total of 10 entries. the castout queue itself is limited to 9 entries, ensuring 1 entry will be available for a push. 512-kbyte unified l2 cache controller 19-bit address (1, 2, or 4 mbytes)
features mpc7457 risc microprocessor hardware specifications, rev. 8 freescale semiconductor 5 ? four integer units (ius) that share 32 gprs for integer operands ? three identical ius (iu1a, iu 1b, and iu1c) can execute all integer instructions except multiply, divide, and move to/from special-purpose regi ster instructions ? iu2 executes miscellaneous instructions including the cr logical operations, integer multiplication and division in structions, and move to/fro m special-purpose register instructions ? five-stage fpu and a 32-entry fpr file ? fully ieee 754-1985 compliant fpu for bot h single- and double- precision operations ? supports non-ieee mode for time-critical operations ? hardware support for denormalized numbers ? thirty-two 64-bit fprs for si ngle- or double-precision operands ? four vector units and 32-entry vector register file (vrs) ? vector permute unit (vpu) ? vector integer unit 1 (viu1) ha ndles short-latency altivec? in teger instructions, such as vector add instructions (for example, vaddsbs , vaddshs , and vaddsws ) ? vector integer unit 2 (viu2) ha ndles longer-latency altivec in teger instructions, such as vector multiply add inst ructions (for example, vmhaddshs , vmhraddshs , and vmladduhm ) ? vector floating- point unit (vfpu) ? three-stage load/store unit (lsu) ? supports integer, floating-point, and ve ctor instruction load/store traffic ? four-entry vector touch queue (vtq) supports all four architected altivec data stream operations ? three-cycle gpr and altivec load latency (byt e, half-word, word, v ector) with one-cycle throughput ? four-cycle fpr load latency (single, double) with one-cycle throughput ? no additional delay for misaligne d access within double-word boundary ? dedicated adder calculates effective addresses (eas) ? supports store gathering ? performs alignment, normalization, and pr ecision conversion fo r floating-point data ? executes cache control and tlb instructions ? performs alignment, zero padding, a nd sign extension for integer data ? supports hits under misses (m ultiple outstanding misses) ? supports both big- and little -endian modes, including misa ligned little-endian accesses ? three issue queues fiq, viq, a nd giq can accept as many as one , two, and three instructions, respectively, in a cycle. instruct ion dispatch requires the following: ? instructions can be dispatched only from th e three lowest iq en tries?iq0, iq1, and iq2 ? a maximum of three instructi ons can be dispatched to the issue queues per clock cycle
mpc7457 risc microprocessor hardware specifications, rev. 8 features freescale semiconductor 6 ? space must be available in the cq for an instruction to dispatch (this includes instructions that are assigned a space in the cq but not in an issue queue) ? rename buffers ? 16 gpr rename buffers ? 16 fpr rename buffers ? 16 vr rename buffers ? dispatch unit ? decode/dispatch stage fully decodes each instruction ? completion unit ? the completion unit retires an instruction from the 16-entry completion queue (cq) when all instructions ahead of it have been complete d, the instruction has finished execution, and no exceptions are pending. ? guarantees sequential programming model (precise exception model) ? monitors all dispatched instruct ions and retires them in order ? tracks unresolved branches and flushes instructions after a mispredicted branch ? retires as many as three instructions per clock cycle ? separate on-chip l1 instruction and data caches (harvard architecture) ? 32-kbyte, eight-way set associat ive instruction and data caches ? pseudo least recently used (p lru) replacement algorithm ? 32-byte (eight-word) l1 cache block ? physically indexed/physical tags ? cache write-back or write-thr ough operation programmable on a pe r-page or per-block basis ? instruction cache can provide four instructions per clock cycle; data cache can provide four words per clock cycle ? caches can be disabled in software. ? caches can be locked in software. ? mesi data cache coherency maintained in hardware ? separate copy of data cache tags for efficient snooping ? l1 cache supports parity generation and checking ? no snooping of instruction cache except for icbi instruction ? data cache supports altivec lr u and transient instructions ? critical double- and/or quad-wo rd forwarding is performed as needed. critical quad-word forwarding is used for altivec loads and inst ruction fetches. other accesses use critical double-word forwarding. ? level 2 (l2) cache interface ? on-chip, 512-kbyte, eight-way set associa tive unified instruction and data cache ? fully pipelined to provide 32 bytes per clock cycle to the l1 caches ? a total nine-cycle load latency for an l1 data cache miss that hits in l2
features mpc7457 risc microprocessor hardware specifications, rev. 8 freescale semiconductor 7 ? plru replacement algorithm ? cache write-back or write-thr ough operation programmable on a pe r-page or per-block basis ? 64-byte, two-sectored line size ? l2 cache supports parity and gene ration checking on both tags and data ? level 3 (l3) cache interface (not implemented on mpc7447) ? provides critical double-word forwarding to the requesting unit ? internal l3 cache controller and tags ? external data srams ? support for 1-, 2-, and 4-mbyte (mb) total sram space ? support for 1- or 2-mb of cache space ? cache write-back or write-thr ough operation programmable on a pe r-page or per-block basis ? 64-byte (1-mb) or 128-byte (2-mb) sectored line size ? private memory capability for half (1 mb mini mum) or all of the l3 sram space for a total of 1-, 2-, or 4-mb of private memory ? supports msug2 dual data rate (ddr) s ynchronous burst srams, pb2 pipelined synchronous burst srams, and pipelined (regis ter-register) late wr ite synchronous burst srams ? supports parity on cache and tags ? configurable core-to-l3 frequency divisors ? 64-bit external l3 data bus sust ains 64 bits per l3 clock cycle ? separate memory management units (mmus) for instructions and data ? 52-bit virtual address; 32- or 36-bit physical address ? address translation for 4-kbyte pages, va riable-sized blocks, and 256-mbyte segments ? memory programmable as write -back/write-through, caching-inhi bited/caching-allowed, and memory coherency enforced/memory coherenc y not enforced on a pa ge or block basis ? separate ibats and dbats (eight each) also defined as sprs ? separate instruction and data tr anslation lookaside buffers (tlbs) ? both tlbs are 128-entry, two-way set asso ciative, and use lru replacement algorithm ? tlbs are hardware- or software-reloadable (t hat is, on a tlb miss a page table search is performed in hardware or by system software) ? efficient data flow ? although the vr/lsu interface is 128 bits, th e l1/l2/l3 bus interf ace allows up to 256 bits ? the l1 data cache is fully pipelined to provide 128 bits/cycle to or from the vrs ? l2 cache is fully pipelined to provide 256 bits per processor clock cycle to the l1 cache ? as many as eight outstanding, out-of-order, cac he misses are allowed between the l1 data cache and l2/l3 bus ? as many as 16 out-of-order transac tions can be present on the mpx bus
mpc7457 risc microprocessor hardware specifications, rev. 8 features freescale semiconductor 8 ? store merging for multiple store misses to the same line. only coherency action taken (address-only) for store misses me rged to all 32 bytes of a cache block (no data tenure needed). ? three-entry finished store queue and five-ent ry completed store queue between the lsu and the l1 data cache ? separate additional queues for efficient buffe ring of outbound data (such as castouts and write-through stores) from the l1 data cache and l2 cache ? multiprocessing s upport features include the following: ? hardware-enforced, mesi cache c oherency protocols for data cache ? load/store with reservation in struction pair for atomic memo ry references, semaphores, and other multiprocessor operations ? power and thermal management ? 1.3-v processor core ? the following three power-saving m odes are available to the system: ? nap?instruction fetching is halt ed. only those clocks for th e time base, decrementer, and jtag logic remain running. the part goes into the doze stat e to snoop memory operations on the bus and back to nap using a qreq /qack processor-system handshake protocol. ? sleep?power consumption is further reduc ed by disabling bus s nooping, leaving only the pll in a locked and running state. all internal functional units are disabled. ? deep sleep?when the part is in the sleep state, the system can disable the pll. the system can then disable the sysclk source for gr eater system power savings. power-on reset procedures for restarting and relocking the pll must be followed on exiting the deep sleep state. ? thermal management facility provides software-controllable thermal management. thermal management is performed through the use of three supervisor-level registers and an mpc7457-specific thermal management exception. ? instruction cache throttling provides control of instruction fetching to limit power consumption ? performance monitor can be used to help debug system designs and improve software efficiency ? in-system testability and debugging fe atures through jtag boundary-scan capability ? testability ? lssd scan design ? ieee 1149.1 jtag interface ? array built-in self test (abist)?factory test only ? reliability and serviceability ? parity checking on system bus and l3 cache bus ? parity checking on the l2 and l3 cache tag arrays
comparison with the mpc7455, mpc7445, mpc7450, mpc7451, and mpc7441 mpc7457 risc microprocessor hardware specifications, rev. 8 freescale semiconductor 9 3 comparison with the mp c7455, mpc7445, mpc7450, mpc7451, and mpc7441 table 1 compares the key features of the mpc7457 w ith the key features of the earlier mpc7455, mpc7445, mpc7450, mpc7451, and mpc7441. to achieve a higher frequency, the number of logic levels per cycle is reduced. also, to achieve this higher frequency, the pipeline of the mpc7457 is extended (compared to the mpc7400), while maintaining the same level of performance as measured by the number of instructions executed per cycle (ipc). table 1. microarchitecture comparison microarchitectural specs mpc 7457/mpc7447 mpc7455/mpc7445 mpc7450/mpc7451/ mpc7441 basic pipeline functions logic inversions per cycle 18 18 18 pipeline stages up to execute 5 5 5 total pipeline stages (minimum) 7 7 7 pipeline maximum instruction throughput 3 + branch 3 + branch 3 + branch pipeline resources instruction buffer size 12 12 12 completion buffer size 16 16 16 renames (integer, float, vector) 16, 16, 16 16, 16, 16 16, 16, 16 maximum execution throughput sfx 333 vector 2 (any 2 of 4 units) 2 (any 2 of 4 units) 2 (any 2 of 4 units) scalar floating-point 1 1 1 out-of-order wind ow size in execution queues sfx integer units 1 entry 3 queues 1 entry 3 queues 1 entry 3 queues vector units in order, 4 queues in order, 4 queues in order, 4 queues scalar floating-point unit in order in order in order branch processing resources prediction structures btic, bht, link stack btic, bht, link stack btic, bht, link stack btic size, associativity 128-entry, 4-way 128-entry, 4-way 128-entry, 4-way bht size 2k-entry 2k-entry 2k-entry link stack depth 8 8 8 unresolved branches supported 3 3 3 branch taken penalty (btic hit) 1 1 1
mpc7457 risc microprocessor hardware specifications, rev. 8 comparison with the mpc7455, mpc7445, mpc7450, mpc7451, and mpc7441 freescale semiconductor 10 minimum misprediction penalty 6 6 6 execution unit timings (latency-throughput) aligned load (integer, float, vector) 3-1 , 4-1, 3-1 3-1, 4-1, 3-1 3-1, 4-1, 3-1 misaligned load (integer, float, vector) 4-2 , 5-2, 4-2 4-2, 5-2, 4-2 4-2, 5-2, 4-2 l1 miss, l2 hit latency 9 data/13 instruction 9 data/13 instruction 9 data/13 instruction sfx (add sub, shift, rot, cmp, logicals) 1-1 1-1 1-1 integer multiply (32 8, 32 16, 32 32) 3-1, 3-1, 4-2 3-1, 3-1, 4-2 3-1, 3-1, 4-2 scalar float 5-1 5-1 5-1 vsfx (vector simple) 1-1 1-1 1-1 vcfx (vector complex) 4-1 4-1 4-1 vfpu (vector float) 4-1 4-1 4-1 vper (vector permute) 2-1 2-1 2-1 mmus tlbs (instruction and data) 128-entry, 2-way 128-entry, 2-way 128-entry, 2-way tablewalk mechanism hardware + software ha rdware + software hardware + software instruction bats/data bats 8/8 8/8 4/4 l1 i cache/d cache features size 32k/32k 32k/32k 32k/32k associativity 8-way 8-way 8-way locking granularity way way way parity on i cache word word word parity on d cache byte byte byte number of d cache misses (load/store) 5/1 5/1 5/1 data stream touch engines 4 streams 4 streams 4 streams on-chip cache features cache level l2l2l2 size/associativity 512-kbyte/8-way 256-kbyte/8-way 256-kbyte/8-way access width 256 bits 256 bits 256 bits number of 32-byte sectors/line 2 2 2 parity byte byte byte off-chip cache support 1 table 1. microarchitecture comparison (continued) microarchitectural specs mpc 7457/mpc7447 mpc7455/mpc7445 mpc7450/mpc7451/ mpc7441
general parameters mpc7457 risc microprocessor hardware specifications, rev. 8 freescale semiconductor 11 4 general parameters the following list provides a summary of the general parameters of the mpc7457: technology 0.13 m cmos, nine-layer metal die size 9.1 mm 10.8 mm transistor count 58 million logic design fully-static packages mpc7447: surface mount 360 ceramic ball grid array (cbga) mpc7457: surface mount 483 cera mic ball grid array (cbga) core power supply 1.3 v 50 mv dc nominal i/o power supply 1.8 v 5% dc, or 2.5 v 5% dc, or 1.5 v 5% dc (l3 interface only, not implemented on mpc7447) 5 electrical and thermal characteristics this section provides the ac and dc electrical sp ecifications and thermal characteristics for the mpc7457. 5.1 dc electrical characteristics the tables in this section describe th e mpc7457 dc electric al characteristics. table 2 provides the absolute maximum ratings. cache level l3l3l3 total sram space supported 1 mb, 2mb, 4 mb 2 1 mb, 2 mb 1 mb, 2 mb on-chip tag logical size (cache space) 1 mb, 2 mb 1 mb, 2 mb 1 mb, 2 mb associativity 8-way 8-way 8-way number of 32-byte sectors/line 2, 4 2, 4 2, 4 off-chip data sram support msug2 ddr, lw, pb2 msug2 ddr, lw, pb2 msug2 ddr, lw, pb2 data path width 64 64 64 direct mapped sram sizes 1 mb, 2 mb, 4 mb 1 mb, 2 mb 1 mb, 2 mb parity byte byte byte notes: 1. not implemented on mpc7447, mpc7445, or mpc7441. 2. the mpc7457 supports up to 4 mb of sram, of which a maximum of 2 mb can be configured as cache memory; the remaining 2 mb may be unused or configured as private memory. table 1. microarchitecture comparison (continued) microarchitectural specs mpc 7457/mpc7447 mpc7455/mpc7445 mpc7450/mpc7451/ mpc7441
mpc7457 risc microprocessor hardware specifications, rev. 8 electrical and thermal characteristics freescale semiconductor 12 figure 2 shows the undershoot and ov ershoot voltage on the mpc7457. table 2. absolute maximum ratings 1 characteristic symbol maximum value unit notes core supply voltage v dd ?0.3 to 1.60 v 2 pll supply voltage av dd ?0.3 to 1.60 v 2 processor bus supply voltage bvsel = 0 ov dd ?0.3 to 1.95 v 3, 4 bvsel = hreset or ov dd ov dd ?0.3 to 2.7 v 3, 5 l3 bus supply voltage l3vsel = ?hreset gv dd ?0.3 to 1.65 v 3, 6 l3vsel = 0 gv dd ?0.3 to 1.95 v 3, 7 l3vsel = hreset or gv dd gv dd ?0.3 to 2.7 v 3, 8 input voltage processor bus v in ?0.3 to ov dd + 0.3 v 9, 10 l3 bus v in ?0.3 to gv dd + 0.3 v 9, 10 jtag signals v in ?0.3 to ov dd + 0.3 v storage temperature range t stg ?55 to 150 c notes : 1. functional and tested operating conditions are given in ta b l e 4 . absolute maximum ratings are stress ratings only, and functional operation at the maximums is not guaranteed. stresse s beyond those listed may affect device reliability or cause permanent damage to the device. 2. caution : v dd /av dd must not exceed ov dd /gv dd by more than 1.0 v during normal operation; this limit may be exceeded for a maximum of 20 ms during power-on reset and power-down sequences. 3. caution : ov dd /gv dd must not exceed v dd /av dd by more than 2.0 v during normal operation; this limit may be exceeded for a maximum of 20 ms during power-on reset and power-down sequences. 4. bvsel must be set to 0, such that the bus is in 1.8-v mode. 5. bvsel must be set to hreset or 1, such that the bus is in 2.5-v mode. 6. l3vsel must be set to ?hreset (inverse of hreset ), such that the bus is in 1.5-v mode. 7. l3vsel must be set to 0, such that the bus is in 1.8-v mode. 8. l3vsel must be set to hreset or 1, such that the bus is in 2.5-v mode. 9. caution : v in must not exceed ov dd or gv dd by more than 0.3 v at any time including during power-on reset. 10.v in may overshoot/undershoot to a voltage and for a maximum duration as shown in figure 2 .
electrical and thermal characteristics mpc7457 risc microprocessor hardware specifications, rev. 8 freescale semiconductor 13 figure 2. overshoot/undershoot voltage the mpc7457 provides several i/o voltages to suppor t both compatibility with existing systems and migration to future systems. the mpc7457 core volta ge must always be provided at nominal 1.3 v (see table 4 for actual recommended core voltage). voltage to the l3 i/os and processor interface i/os are provided through separate sets of supply pins and may be provided at the voltages shown in table 3 . the input voltage threshold for each bus is selected by sa mpling the state of the volta ge select pins at the negation of the signal hreset . the output voltage will swing from gnd to the maximum voltage applied to the ov dd or gv dd power pins. table 3. input threshold voltage setting bvsel signal processor bus input threshold is relative to: l3vsel signal 1 l3 bus input threshold is relative to: notes 0 1.8 v 0 1.8 v 2, 3 ?hreset not available ?hreset 1.5 v 2, 4 hreset 2.5 v hreset 2.5 v 2 1 2.5 v 1 2.5 v 2 notes: 1. not implemented on mpc7447. 2. caution: the input threshold selection must agree with the ov dd /gv dd voltages supplied. see notes in ta bl e 2 . 3. if used, pull-down resi stors should be less than 250 . 4. applicable to l3 bu s interface only. ?hreset is the inverse of hreset . v ih gnd gnd ? 0.3 v gnd ? 0.7 v not to exceed 10% ov dd /gv dd + 20% v il ov dd /gv dd ov dd /gv dd + 5% of t sysclk
mpc7457 risc microprocessor hardware specifications, rev. 8 electrical and thermal characteristics freescale semiconductor 14 table 4 provides the recommended opera ting conditions for the mpc7457. table 5 provides the package thermal characteristics for the mpc7457. table 4. recommended operating conditions 1 characteristic symbol recommended value unit notes min max core supply voltage v dd 1.3 v 50 mv v pll supply voltage av dd 1.3 v 50 mv v 2 processor bus supply voltage bvsel = 0 ov dd 1.8 v 5% v bvsel = hreset or ov dd ov dd 2.5 v 5% v l3 bus supply voltage l3vsel = 0 gv dd 1.8 v 5% v l3vsel = hreset or gv dd gv dd 2.5 v 5% v l3vsel = ?hreset gv dd 1.5 v 5% v 3 input voltage processor bus v in gnd ov dd v l3 bus v in gnd gv dd v jtag signals v in gnd ov dd v die-junction temperature t j 0105c notes: 1. these are the recommended and tested operating conditions. pr oper device operation outside of these conditions is not guaranteed. 2. this voltage is the input to the filter discussed in section 9.2, ?pll power supply filtering,? and not necessarily the voltage at the av dd pin, which may be reduced from v dd by the filter. 3. ?hreset is the inverse of hreset . table 5. package thermal characteristics 1 characteristic symbol value unit notes mpc7447 mpc7457 junction-to-ambient thermal resistance, natural convection r ja 22 20 c/w 2, 3 junction-to-ambient thermal resistance, natural convection, four-layer (2s2p) board r jma 14 14 c/w 2, 4 junction-to-ambient thermal resistance, 200 ft/min airflow, single-layer (1s) board r jma 16 15 c/w 2, 4 junction-to-ambient thermal resistance, 200 ft/min airflow, four-layer (2s2p) board r jma 11 11 c/w 2, 4 junction-to-board thermal resistance r jb 66c/w5 junction-to-case thermal resistance r jc <0.1 <0.1 c/w 6
electrical and thermal characteristics mpc7457 risc microprocessor hardware specifications, rev. 8 freescale semiconductor 15 table 6 provides the dc electrical ch aracteristics for the mpc7457. coefficient of thermal expansion 6.8 6.8 ppm/c notes : 1. refer to section 9.8, ?thermal management information,? for more details about thermal management. 2. junction temperature is a function of on-chip power dissi pation, package thermal resistance, mounting site (board) temperature, ambient temperature, airflow, power dissi pation of other components on the board, and board thermal resistance. 3. per semi g38-87 and jedec jesd51-2 with the single-layer board horizontal. 4. per jedec jesd51-6 with the board horizontal. 5. thermal resistance between the die and the printed-circuit board per jedec jesd51-8. board temperature is measured on the top surface of the board near the package. 6. thermal resistance between the die and the case top surface as measured by the cold plate method (mil spec-883 method 1012.1) with the calculated case te mperature. the actual value of r jc for the part is less than 0.1c/w. table 6. dc electrical specifications at recommended operating conditions. see ta b l e 4 . characteristic nominal bus voltage 1 symbol min max unit notes input high voltage (all inputs including sysclk) 1.5 v ih gv dd 0.65 gv dd + 0.3 v 2 1.8 ov dd /gv dd 0.65 ov dd /gv dd + 0.3 v 2.5 1.7 ov dd /gv dd + 0.3 v input low voltage (all inputs including sysclk) 1.5 v il ?0.3 gv dd 0.35 v 2, 6 1.8 ?0.3 ov dd /gv dd 0.35 v 2.5 ?0.3 0.7 v input leakage current, v in = gv dd /ov dd ?i in ?30a2, 3 high-impedance (off-state) leakage current, v in = gv dd /ov dd ?i tsi ? 30 a 2, 3, 4 output high voltage, i oh = ?5 ma 1.5 v oh ov dd /gv dd ? 0.45 ? v 6 1.8 ov dd /gv dd ? 0.45 ? v 2.5 1.8 ? v output low voltage, i ol = 5 ma 1.5 v ol ?0.45v6 1.8 ? 0.45 v 2.5 ? 0.6 v table 5. package thermal characteristics 1 (continued) characteristic symbol value unit notes mpc7447 mpc7457
mpc7457 risc microprocessor hardware specifications, rev. 8 electrical and thermal characteristics freescale semiconductor 16 table 7 provides the power consumption for the mpc7457. capacitance, v in = 0 v, f = 1 mhz l3 interface ? c in ?9.5pf5 all other inputs ? 8.0 notes : 1. nominal voltages; see ta bl e 4 for recommended operating conditions. 2. for processor bus signals, the reference is ov dd while gv dd is the reference for the l3 bus signals. 3. excludes test signals and ieee 1149.1 boundary scan (jtag) signals. 4. the leakage is measured for nominal ov dd /gv dd and v dd , or both ov dd /gv dd and v dd must vary in the same direction (for example, both ov dd and v dd vary by either +5% or ?5%). 5. capacitance is periodically sampled rather than 100% tested. 6. applicable to l3 bus interface only. table 7. power consumption for mpc7457 processor (cpu) frequency unit notes 867 mhz 1000 mhz 1200 mhz 1267 mhz full-power mode typical 14.8 15.8 17.5 18.3 w 1, 2 maximum 21.0 22.0 24.2 25.6 w 1, 3 nap mode typical 5.2 5.2 5.2 5.2 w 1, 2 sleep mode typical 5.1 5.1 5.1 5.1 w 1, 2 deep sleep mode (pll disabled) typical 5.0 5.0 5.0 5.0 w 1, 2 notes: 1. these values apply for all valid processor bus and l3 bus ratios. the values do not include i/o supply power (ov dd and gv dd ) or pll supply power (av dd ). ov dd and gv dd power is system dependent, but is typically <5% of v dd power. worst case power consumption for av dd < 3 mw. 2. typical power is an average value measured at the nominal recommended v dd (see ta b l e 4 ) and 65 c while running the dhrystone 2.1 benchmark and achi eving 2.3 dhrystone mips/mhz. 3. maximum power is the average measured at nominal v dd and maximum operating junction temperature (see ta bl e 4 ) while running an entirely cache-resident, contrived sequence of inst ructions which keep all the execution units maximally busy. 4. doze mode is not a user-definable state; it is an intermediate state between full-power and either nap or sleep mode. as a result, power consumption for this mode is not tested. table 6. dc electrical specifications (continued) at recommended operating conditions. see ta b l e 4 . characteristic nominal bus voltage 1 symbol min max unit notes
electrical and thermal characteristics mpc7457 risc microprocessor hardware specifications, rev. 8 freescale semiconductor 17 5.2 ac electrical characteristics this section provides the ac electr ical characteristics for the mpc7457. after fabrication, functional parts are sorted by maximum processor co re frequency as shown in section 1.5.2.1, ?clock ac specifications,? and tested for conformance to the ac specifications fo r that frequency. the processor core frequency is determined by the bus (sysclk) fr equency and the settings of the pll_ cfg[0:4] signals. parts are sold by maximum processor core frequency; se e section 1.11, ?ordering information.? 5.2.1 clock ac specifications table 8 provides the clock ac timing sp ecifications as defined in figure 6 and represents the tested operating frequencies of the devices. th e maximum system bus frequency, f sysclk , given in table 8 is considered a practical maximum in a typical singl e-processor system. the actual maximum sysclk frequency for any application of th e mpc7457 will be a function of the ac timi ngs of the mpc7457, the ac timings for the system controller, bus loading, pr inted-circuit board topology , trace lengths, and so forth, and may be less than the value given in table 8 . for information regarding the use of spread spectrum clock generators, see section 9.1.3, ?system bus clock (sysclk) and spread spectrum sources .? pll configuration and bus-to-core multiplier information is found in section 9.1.1, ?core clocks and pll configuration .? table 8. clock ac timing specifications at recommended operating conditions. see ta b l e 4 . characteristic symbol maximum processor core frequency unit notes 867 mhz 1000 mhz 1200 mhz 1267 mhz min max min max min max min max processor frequency f core 600 867 600 1000 600 1200 600 1267 mhz 1 vco frequency f vco 1200 1733 1200 2000 1200 2400 1200 2534 mhz 1 sysclk frequency f sysclk 33 167 33 167 33 167 33 167 mhz 1, 2 sysclk cycle time t sysclk 6.0 30 6.0 30 6.0 30 6.0 30 ns 2 sysclk rise and fall time t kr , t kf ?1.0?1.0?1.0?1.0 ns 3 sysclk duty cycle measured at ov dd /2 t khkl / t sysclk 40 60 40 60 40 60 40 60 % 4 sysclk cycle-to-cycle jitter ? 150 ? 150 ? 150 ? 150 ps 5, 6
mpc7457 risc microprocessor hardware specifications, rev. 8 electrical and thermal characteristics freescale semiconductor 18 figure 3 provides the sysclk input timing diagram. figure 3. sysclk input timing diagram 5.2.2 processor bus ac specifications table 9 provides the processor bus ac timing specificat ions for the mpc7457 as defined in figure 4 and figure 5 . timing specifications for the l3 bus are provided in section 5.2.3, ?l3 clock ac specifications .? internal pll relock time ?100?100?100?100 s7 notes : 1. caution : the sysclk frequency and pll_cfg[0:4] settings must be chosen such that the resulting sysclk (bus) frequency, cpu (core) frequency, and pll (vco) frequency do not exceed their respective maximum or minimum operating frequencies. refer to the pll_cfg[0:4] signal description in section 1.9.1, ?pll configuration,? for valid pll_cfg[0:4] settings. 2. assumes lightly-loaded, si ngle-processor system; see section 5.2.1, ?clock ac specifications ? for more information. 3. rise and fall times for the sysclk in put measured from 0.4 to 1.4 v. 4. timing is guaranteed by design and characterization. 5. guaranteed by design. 6. the sysclk driver?s closed loop jitter bandwidth should be less than 1.5 mhz at ?3 db. 7. relock timing is guaranteed by design and characterization. pll-relock time is the maximum amount of time required for pll lock after a stable v dd and sysclk are reached during the power-on reset sequence. this specification also applies when the pll has been disabled and subsequently re-enabled during sleep mode. also note that hreset must be held asserted for a minimum of 255 bus clocks after the pll-relock time during the power-on reset sequence. table 8. clock ac timing specifications (continued) at recommended operating conditions. see ta b l e 4 . characteristic symbol maximum processor core frequency unit notes 867 mhz 1000 mhz 1200 mhz 1267 mhz min max min max min max min max sysclk vm vm vm cv ih cv il vm = midpoint voltage (ov dd /2) t sysclk t kr t kf t khkl
electrical and thermal characteristics mpc7457 risc microprocessor hardware specifications, rev. 8 freescale semiconductor 19 table 9. processor bus ac timing specifications 1 at recommended operating conditions. see ta b l e 4 . parameter symbol 2 all revisions and speed grades unit notes min max input setup times: a[0:35], ap[0:4] d[0:63], dp[0:7] aack , artry , bg , ckstp_in , dbg , dti[0:3], gbl , tt[0:3], qack , ta , tben, tea , ts , ext_qual, pmon_in , shd [0:1], bmode[0:1], bmode [0:1], bvsel, l3vsel t avkh t dvkh t ivkh t mvkh 1.8 1.8 1.8 1.8 ? ? ? ? ns 8 input hold times: a[0:35], ap[0:4] d[0:63], dp[0:7] aack , artry , bg , ckstp_in , dbg , dti[0:3], gbl , tt[0:3], qack , ta , tben, tea , ts , ext_qual, pmon_in , hd [0:1] bmode [0:1], bvsel, l3vsel t axkh t dxkh t ixkh t mxkh 0 0 0 0 ? ? ? ? ns 8 output valid times: a[0:35], ap[0:4] d[0:63], dp[0:7] aack , artry , br , ci , ckstp_in , drdy , dti[0:3], gbl , hit , pmon_out , qreq , tbst , tsiz[0:2], tt[0:3], ts , shd [0:1], wt t khav t khdv t khov ? ? ? 2.0 2.0 2.0 ns output hold times: a[0:35], ap[0:4] d[0:63], dp[0:7] aack , artry , br , ci , ckstp_in , drdy , dti[0:3], gbl , hit , pmon_out , qreq , tbst , tsiz[0:2], tt[0:3], ts , shd [0:1], wt t khax t khdx t khox 0.5 0.5 0.5 ? ? ? ns sysclk to output enable t khoe 0.5 ? ns sysclk to output high impedance (all except ts , artry , shd0 , shd1 ) t khoz ?3.5ns sysclk to ts high impedance after precharge t khtspz ?1t sysclk 3, 4, 5 maximum delay to artry /shd0 /shd1 precharge t kharp ?1t sysclk 3, 5 6, 7
mpc7457 risc microprocessor hardware specifications, rev. 8 electrical and thermal characteristics freescale semiconductor 20 figure 4 provides the ac test load for the mpc7457. figure 4. ac test load sysclk to artry /shd0 /shd1 high impedance after precharge t kharpz ?2t sysclk 3, 5, 6, 7 notes: 1. all input specifications are measured from the midpoint of th e signal in question to the midpoint of the rising edge of the i nput sysclk. all output specifications are measured from the midpoint of the rising edge of sysclk to th e midpoint of the signal in question. all output timings assume a purely resistive 50- load (see figure 4 ). input and output timi ngs are measured at the pin; time-of-flight delays mu st be added for trace lengths, vias, and co nnectors in the system. 2. the symbology used for timing specifications herein follows the pattern of t (signal)(state)(reference)(state) for inputs and t (reference)(state)(signal)(state) for outputs. for example, t ivkh symbolizes the time input signa ls (i) reach the valid state (v) relative to the sysclk reference (k) going to the high (h) state or in put setup time. and t khov symbolizes the time from sysclk(k) going high (h) until outputs (o) are valid (v) or output valid time. input hold time can be read as the time that the input signal (i) went invalid (x) with respect to the risi ng clock edge (kh) (note the position of the reference and its st ate for inputs) and output hold time can be read as the time from the rising edge (kh) until the output went invalid (ox). 3. t sysclk is the period of the external clock (sysclk) in ns. the nu mbers given in the table must be multiplied by the period of sysclk to compute the actual time durati on (in ns) of the parameter in question. 4. according to the bus protocol, ts is driven only by the currently active bus master. it is asserted low then precharged high before returning to high impedance as shown in figure 6 . the nominal precharge width for ts is 0.5 t sysclk , that is, less than the minimum t sysclk period, to ensure that another master asserting ts on the following clock will not contend with the precharge. output valid and output hol d timing is tested for the signal asserted. output valid time is tested for precharge.the high-impedance behavior is guaranteed by design. 5. guaranteed by design and not tested. 6. according to the bus protocol, artry can be driven by multiple bus masters through the clock period immediately following aack . bus contention is not an issue because any master asserting artry will be driving it low. any master asserting it low in the first clock following aack will then go to high impedance for one clock before precharging it high during the second cycle after the assertion of aack . the nominal precharge width for artry is 1.0 t sysclk ; that is, it should be high impedance as shown in figure 6 before the first opportunity for another master to assert artry . output valid and output hold timing is tested for the signal asserted.t he high-impedance behavior is guaranteed by design. 7. according to the mpx bus protocol, shd0 and shd1 can be driven by multiple bus masters beginning the cycle of ts . timing is the same as artry , that is, the signal is high impedance for a fracti on of a cycle, then negated for up to an entire cycle (crossing a bus cycle boundary) before being three-stat ed again. the nominal precharge width for shd0 and shd1 is 1.0 t sysclk . the edges of the precharge vary depending on the progra mmed ratio of core to bus (pll configurations). 8. bmode [0:1] and bvsel are mode se lect inputs and are samp led before and after hreset negation. these parameters represent the input setup and hold times for each sample. these values are guaranteed by design and not tested. these inputs must remain stable after the second sample. see figure 5 for sample timing. table 9. processor bus ac timing specifications 1 (continued) at recommended operating conditions. see ta b l e 4 . parameter symbol 2 all revisions and speed grades unit notes min max output z 0 = 50 ov dd /2 r l = 50
electrical and thermal characteristics mpc7457 risc microprocessor hardware specifications, rev. 8 freescale semiconductor 21 figure 5 provides the mode select input timing diagram for the mpc7457. figure 5. mode input timing diagram figure 6 provides the input/output ti ming diagram for the mpc7457. figure 6. input/output timing diagram hreset mode signals vm = midpoint voltage (ov dd /2) sysclk 1st sample 2nd sample vm vm sysclk all inputs vm vm = midpoint voltage (ov dd /2) all outputs t khox vm t khdv (except ts , artry , shd0 , shd1 ) all outputs ts artry , (except ts , artry , shd0 , shd1 ) vm t khoe t khoz t khtspz t kharpz t kharp shd1 shd0 , t khov t khav t khdx t khax t ixkh t axkh t khtsx t khtsv t khtsv t kharv t kharx t ivkh t avkh t mvkh t mxkh
mpc7457 risc microprocessor hardware specifications, rev. 8 electrical and thermal characteristics freescale semiconductor 22 5.2.3 l3 clock ac specifications the l3_clk frequency is programmed by the l3 confi guration register core-t o-l3 divisor ratio. see table 18 for example core and l3 frequencies at various divisors. table 10 provides the potential range of l3_clk output ac timing spec ifications as defined in figure 7 . the maximum l3_clk frequency is the core freque ncy divided by two. given the high core frequencies available in the mpc7457, however, most sram designs will be not be able to operate in this mode using current technology and, as a re sult, will select a greater core-to-l3 divisor to provide a longer l3_clk period for read and write access to the l3 srams. therefore, th e typical l3_clk frequency shown in table 10 is considered to be the practical maximum in a typical system. the ma ximum l3_clk frequency for any application of the mpc7457 wi ll be a function of the ac timings of the mpc7457, the ac timings for the sram, bus loading, and printe d-circuit board trace le ngth, and may be greater or less than the value given in table 10 . note that sysclk input jitter and l3_clk[0:1] output jitter are already comprehended in the l3 bus ac timing specifications a nd do not need to be separately accounted for in an l3 ac timing analysis. clock skews, where applicable, do need to be accounted for in an ac timing analysis. freescale is similarly limited by sy stem constraints and cannot perfor m tests of the l3 interface on a socketed part on a functional test er at the maximum frequencies of table 10 . therefore, functional operation and ac timing inform ation are tested at core-t o-l3 divisors which result in l3 frequencies at 250 mhz or lower. table 10. l3_clk output ac timing specifications at recommended operating conditions. see ta b l e 4 . parameter symbol device revision (l3 i/o voltage) 6 unit notes rev 1.1. (all i/o modes) rev 1.2 (1.5-v i/o mode) rev 1.2 (1.8-, 2.5-v i/o modes) min typ max min typ max l3 clock frequency f l3_clk ?200? ?250?mhz1 l3 clock cycle time t l3_clk ? 5.0 ? ? 4.0 ? ns 1 l3 clock duty cycle t chcl /t l3_clk ?50??50? % 2 l3 clock output-to-output skew (l3_clk0 to l3_clk1) t l3cskw1 ? ? 100 ? ? 100 ps 3 l3 clock output-to-output skew (l3_clk[0:1] to l3_echo_clk[1,3]) t l3cskw2 ? ? 100 ? ? 100 ps 4
electrical and thermal characteristics mpc7457 risc microprocessor hardware specifications, rev. 8 freescale semiconductor 23 the l3_clk timing diagram is shown in figure 7 . figure 7. l3_clk_out output timing diagram l3 clock jitter ? ? 75 ? ? 75 ps 5 notes : 1. the maximum l3 clock frequency (and minimum l3 clock period) will be system dependent. see section 5.2.3, ?l3 clock ac specifications ,? for an explanation that this maximum frequency is not functionally tested at speed by freescale. the minimum l3 clock frequency and period are f sysclk and t sysclk , respectively. 2. the nominal duty cycle of the l3 output cloc ks is 50% measured at midpoint voltage. 3. maximum possible skew between l3_clk0 and l3_clk1. this parameter is critical to the address and control signals which are common to both sr am chips in the l3. 4. maximum possible skew between l3_clk0 and l3_echo_clk1 or between l3_clk1 and l3_echo_clk3 for pb2 or late write sram. this parameter is critical to the read data signals because the processor uses the feedback loop to latch data driven from the sram, each of which dr ives data based on l3_clk0 or l3_clk1. 5. guaranteed by design and not tested. the input jitter on s ysclk affects l3 output clocks and the l3 address, data, and control signals equally and, therefore, is already comprehended in the ac timing and does not have to be considered in the l3 timing analysis. the clock-to-clock jitter shown here is uncertainty in the internal clock period caused by supply voltage noise or thermal effects. this is also comprehended in the ac timing specifications and need not be considered in the l3 timing analysis. 6. l3 i/o voltage mode must be configured by l3vsel as described in ta b l e 3 , and voltage supplied at gv dd must match mode selected as specified in ta bl e 4 . see ta b l e 2 2 for revision level information and part marking. table 10. l3_clk output ac timing specifications (continued) at recommended operating conditions. see ta b l e 4 . parameter symbol device revision (l3 i/o voltage) 6 unit notes rev 1.1. (all i/o modes) rev 1.2 (1.5-v i/o mode) rev 1.2 (1.8-, 2.5-v i/o modes) min typ max min typ max l3_clk0 vm t l3cr t l3cf vm vm vm l3_clk1 vm vm t l3_clk t chcl vm l3_echo_clk1 l3_echo_clk3 vm vm vm vm vm vm vm vm for pb2 or late write: t l3cskw1 t l3cskw2 t l3cskw2
mpc7457 risc microprocessor hardware specifications, rev. 8 electrical and thermal characteristics freescale semiconductor 24 5.2.4 l3 bus ac specifications the mpc7457 l3 interface supports three different types of sram: source-synchronous, double data rate (ddr) msug2 sram, late write sram s, and pipeline burst (pb2) sr ams. each requires a different protocol on the l3 interface and a different routi ng of the l3 clock signals. the type of sram is programmed in l3cr[22:23] and the mpc7457 then follow s the appropriate protocol for that type. the designer must connect and route the l3 signals appropriately for each type of sr am. following are some observations about the l3 interface. ? the routing for the point-to-point signals (l3_clk[0:1], l3data[0:63], l3dp[0:7], and l3_echo_clk[0:3]) to a particular sram must be delay matched. ? for 1-mbyte of sram, use l3_a ddr[16:0] (l3_addr[0] is lsb) ? for 2-mbyte of sram, use l3_a ddr[17:0] (l3_addr[0] is lsb) ? for 4-mbyte of sram, use l3_a ddr[18:0] (l3_addr[0] is lsb) ? no pull-up resistors are required for the l3 interface ? for high-speed operations, l3 in terface address and control signals should be a ?t? with minimal stubs to the two loads; data a nd clock signals should be point-to-point to their single load. figure 8 shows the ac test load for the l3 interface. figure 8. ac test load for the l3 interface in general, if routing is short, delay-matched, a nd designed for incident wave reception and minimal reflection, there is a high probability that the ac timing of the mpc7457 l3 interface will meet the maximum frequency operation of appropriately chos en srams. this is despite the pessimistic, guard-banded ac sp ecifications (see table 12 , table 13 , and table 14 ), the limitations of functional testers described in section 5.2.3, ?l3 clock ac specifications ,? and the uncertainty of clocks and signals which inevitably make worst-case critical path timing analysis pessimistic. more specifically, certain signals within groups should be delay-matche d with others in the same group while intergroup routing is less critical. only the address and c ontrol signals are co mmon to both srams and additional timing margin is av ailable for these signals. the doubl e-clocked data signals are grouped with individual clocks as shown in figure 9 or figure 11 , depending on the type of sram. for example, for the msug2 ddr sram (see figure 9 ); l3data[0:31], l3dp[0:3], and l3_clk[0] form a closely coupled group of outputs from the mpc7457; while l3data[0:15], l3dp[0:1], and l3_echo_clk[0] form a closely coupled group of inputs. the mpc7450 risc microprocessor family user?s manual refers to logical settings called ?sample points? used in the synchronization of reads from the receive fifo. th e computation of the correct value for this setting is system-depe ndent and is described in the mpc7450 risc microprocessor family user?s manual . three specifications are used in this calculation and are given in table 11 . it is essential that all three specifications are included in the calculations to determine the sample point s, as incorrect settings can result in errors and unpredictable behavior. for more information, see the mpc7450 risc microprocessor family user?s manual. output z 0 = 50 gv dd /2 r l = 50
electrical and thermal characteristics mpc7457 risc microprocessor hardware specifications, rev. 8 freescale semiconductor 25 5.2.4.1 effects of l3ohcr settings on l3 bus ac specifications the ac timing of the l3 interface can be adjusted us ing the l3 output hold c ontrol register (l3ochr). each field controls the timing fo r a group of signals. the ac timing specifications presented herein represent the ac timing when the register contains th e default value of 0x0000_ 0000. incrementing a field delays the associated signals, increa sing the output valid time and hold t ime of the affected signals. in the special case of delaying an l3_clk signal, the net effect is to decrease the output valid and output hold times of all signals being latched re lative to that clock signal. the am ount of delay added is summarized in table 12 . note that these settings affect output timi ng parameters only and do not impact input timing parameters of the l3 bus in any way. table 11. sample points calculation parameters parameter symbol max unit notes delay from processor clock to internal_l3_clk t ac 3/4 t l3_clk 1 delay from internal_l3_clk to l3_clk[ n ] output pins t co 3ns2 delay from l3_echo_clk[ n ] to receive latch t eci 3ns3 notes : 1. this specification describes a logical offset between the inte rnal clock edge used to launch the l3 address and control signa ls (this clock edge is phase-aligned with the processor clock edge) and the internal clock edge used to launch the l3_clk[ n ] signals. with proper board routing, this offset ensures that the l3_clk[ n ] edge will arrive at the sram within a valid address window and provide adequate setup and hold time. this offset is re flected in the l3 bus interface ac timing specifications, but must also be separately accounted for in the calcul ation of sample points and, thus, is specified here. 2. this specification is the delay from a rising or falling edge on the internal_l3_clk signal to the corresponding rising or fa lling edge at the l3clk[ n ] pins. 3. this specification is the delay from a rising or falling edge of l3_echo_clk[ n ] to data valid and ready to be sampled from the fifo. table 12. effect of l3ohcr settings on l3 bus ac timing at recommended operating conditions. see ta b l e 4 . field name 1 affected signals value output valid time output hold time unit notes parameter symbol 2 change 3 parameter symbol 2 change 3 l3aoh l3_addr[18:0], l3_cntl[0:1] 0b00 t l3chov 0t l3chox 0ps4 0b01 +50 +50 0b10 +100 +100 0b11 +150 +150
mpc7457 risc microprocessor hardware specifications, rev. 8 electrical and thermal characteristics freescale semiconductor 26 5.2.4.2 l3 bus ac specifications for ddr msug2 srams when using ddr msug2 srams at the l3 interface, the parts s hould be connected as shown in figure 9 . outputs from the mpc7457 are actually launched on th e edges of an internal clock phase-aligned to sysclk (adjusted for core and l3 frequency diviso rs). l3_clk0 and l3_clk1 are this internal clock output with 90 phase dela y, so outputs are shown synchronous to l3_clk0 and l3_clk1. output valid times are typically negative when referenced to l3_clk n because the data is la unched one-quarter period before l3_clk n to provide adequate setup time at the sram after the delay-matched address, control, data, and l3_clk n signals have propagated acro ss the printed-wiring board. inputs to the mpc7457 are source-synchronous with the cq clock generated by the ddr msug2 srams. these cq clocks are received on the l3_echo_clk n inputs of the mpc7457. an internal circuit delays the incoming l3_echo_clk n signal such that it is posit ioned within the valid data l3clk n _oh all signals latched by sram connected to l3_clk n 0b000 t l3chov , t l3chdv , t l3cldv 0t l3chox , t l3chdx , t l3cldx 0ps4 0b001 ? 50 ? 50 5 0b010 ? 100 ? 100 5 0b011 ? 150 ? 150 5 0b100 ? 200 ? 200 5 0b101 ? 250 ? 250 5 0b110 ? 300 ? 300 5 0b111 ? 350 ? 350 5 l3doh n l3_data[ n : n +7], l3_dp[ n /8] 0b000 t l3chdv , t l3cldv 0t l3chdx , t l3cldx 0ps4 0b001 + 50 + 50 0b010 + 100 + 100 0b011 + 150 + 150 0b100 + 200 + 200 0b101 + 250 + 250 0b111 + 300 + 300 0b111 + 350 + 350 notes: 1. see the mpc7450 risc microprocessor family user?s manual for specific information regarding l3ohcr. 2. see ta b l e 1 3 and ta bl e 1 4 for more information. 3. approximate delay verified by simula tion; not tested or characterized. 4. default value. 5. increasing values of l3clk n _oh delay the l3_clk n signal, effectively decreasing the out put valid and output hold times of all signals latched relative to that clock signal by the sram; see figure 9 and figure 11 . table 12. effect of l3ohcr settings on l3 bus ac timing (continued) at recommended operating conditions. see ta b l e 4 . field name 1 affected signals value output valid time output hold time unit notes parameter symbol 2 change 3 parameter symbol 2 change 3
electrical and thermal characteristics mpc7457 risc microprocessor hardware specifications, rev. 8 freescale semiconductor 27 window at the internal receiving latche s. this delayed clock is used to capture the data into these latches which comprise the receive fifo. this clock is async hronous to all other proces sor clocks. this latched data is subsequently read out of the fifo synchronously to the pr ocessor clock. the ti me between writing and reading the data is set by the using the samp le point settings define d in the l3cr register. table 13 provides the l3 bus interface ac timing specifications for th e configuration as shown in figure 9 , assuming the timing relationships shown in figure 10 and the loading shown in figure 8 . table 13. l3 bus interface ac timing specifications for msug2 at recommended operating conditions. see ta b l e 4 . parameter symbol device revision (l3 i/o voltage) 9 unit notes rev 1.1. (all i/o modes) rev 1.2 (1.5-v i/o mode) rev 1.2 (1.8-, 2.5-v i/o modes) min max min max l3_clk rise and fall time t l3cr , t l3cf ? 0.75 ? 0.75 ns 1 setup times: data and parity t l3dveh , t l3dvel (? t l3clk /4) + 0.90 ?(? t l3clk /4) + 0.70 ? ns 2, 3, 4 input hold times: data and parity t l3dxeh , t l3dxel (t l3clk /4) + 0.85 ?(t l3clk /4) + 0.70 ?ns2, 4 valid times: data and parity t l3chdv , t l3cldv ?(? t l3clk /4) + 0.60 ?(? t l3clk /4) + 0.50 ns 5, 6, 7, 8 valid times: all other outputs t l3chov ?(t l3clk /4) + 0.65 ?(t l3clk /4) + 0.65 ns 5, 7, 8 output hold times: data and parity t l3chdx , t l3cldx, (t l3clk /4) ? 0.60 ?(t l3clk /4) ? 0.50 ?ns5, 6, 7, 8 output hold times: all other outputs t l3chox (t l3clk /4) ? 0.50 ?(t l3clk /4) ? 0.50 ? ns 5, 7, 8 l3_clk to high impedance: data and parity t l3cldz ?(? t l3clk /4) + 0.60 ?(? t l3clk /4) + 0.60 ns
mpc7457 risc microprocessor hardware specifications, rev. 8 electrical and thermal characteristics freescale semiconductor 28 l3_clk to high impedance: all other outputs t l3choz ?(t l3clk /4) + 0.65 ?(t l3clk /4) + 0.65 ns notes : 1. rise and fall times for the l3_clk out put are measured from 20% to 80% of gv dd . 2. for ddr, all input specifications are meas ured from the midpoint of the signal in qu estion to the midpoint voltage of the ris ing or falling edge of the input l3_echo_clk n (see figure 10 ). input timings are measured at the pins. 3. for ddr, the input data will typically follow the edge of l3_echo_clk n as shown in figure 10 . for consistency with other input setup time specifications, this will be treated as negative input setup time. 4. t l3_clk /4 is one-fourth the period of l3_clk n . this parameter indicates that the mpc7 457 can latch an input signal that is valid for only a short time before and a short time after the midpoint between the rising and falling (or falling and rising) e dges of l3_echo_clk n at any frequency. 5. all output specificatio ns are measured from the midpoint voltage of the ri sing (or for ddr write data, also the falling) edge of l3_clk to the midpoint of the signal in question. the output ti mings are measured at the pins. all output timings assume a purely resistive 50- load (see figure 8 ). 6. for ddr, the output data will typically lead the edge of l3_clk n as shown in figure 10 . for consistency with other output valid time specifications, this will be treated as negative output valid time. 7. t l3_clk /4 is one-fourth the period of l3_clk n . this parameter indicates that the spec ified output signal is actually launched by an internal clock delayed in phase by 90 . therefore, there is a fr equency component to the output valid and output hold times such that the specified output signal will be valid for ap proximately one l3_clk period starting three-fourths of a clock before the edge on which the sram will sample it and ending one-fourth of a clock period after the edge it will be sampled. 8. assumes default value of l3ohcr. see section 5.2.4.1, ?effects of l3ohcr se ttings on l3 bus ac specifications ,? for more information. 9. l3 i/o voltage mode must be conf igured by l3vsel as described in ta bl e 3 , and voltage supplied at gv dd must match mode selected as specified in ta bl e 4 . see ta bl e 2 2 for revision level information and part marking. table 13. l3 bus interface ac timing specifications for msug2 (continued) at recommended operating conditions. see ta b l e 4 . parameter symbol device revision (l3 i/o voltage) 9 unit notes rev 1.1. (all i/o modes) rev 1.2 (1.5-v i/o mode) rev 1.2 (1.8-, 2.5-v i/o modes) min max min max
electrical and thermal characteristics mpc7457 risc microprocessor hardware specifications, rev. 8 freescale semiconductor 29 figure 9 shows the typical connection diagram for the mpc7457 interfaced to msug2 ddr srams. figure 9. typical source synchronous 4-mbyte l3 cache ddr interface {l3data[0:15], {l3data[16:31], {l3_data[32:47], l3addr[18:0] l3_cntl [0] l3_clk[0] l3_clk[1] l3_echo_clk[0] l3_echo_clk[1] l3echo_clk[2] l3_echo_clk[3] {l3data[48:63], l3dp[0:1]} l3dp[2:3]} l3dp[4:5]} l3dp[6:7]} cq sa[18:0] ck b1 b2 sram 0 sram 1 cq d[0:17] d[18:35] cq sa[18:0] ck b1 b2 cq d[0:17] d[18:35] l3_cntl [1] nc nc gnd gnd gnd nc nc gnd gnd gnd mpc7457 denotes receive (sram to mpc7457) aligned signals denotes transmit (mpc7457 to sram) aligned signals gv dd /2 1 gv dd /2 1 cq ck b3 g cq lbo cq ck b3 g cq lbo note: 1. or as recommended by sram manufacturer for single-ended clocking.
mpc7457 risc microprocessor hardware specifications, rev. 8 electrical and thermal characteristics freescale semiconductor 30 figure 10 shows the l3 bus timing diagrams for the mpc7457 interfaced to msug2 srams. figure 10. l3 bus timing diagrams for l3 cache ddr srams 5.2.4.3 l3 bus ac specifications for pb2 and late write srams when using pb2 or late write srams at the l3 in terface, the parts should be connected as shown in figure 11 . these srams are synchronous to the mpc7457; one l3_clk n signal is output to each sram to latch address, control, and write data. read data is launched by the sram s ynchronous to the delayed l3_clk n signal it received. the mpc7457 needs a copy of that delayed clock which launched the sram read data to know when the returning data will be valid. therefore, l3_echo_clk1 and l3_echo_clk3 must be routed halfway to th e srams and returned to the mpc7457 inputs l3_echo_clk0 and l3_echo_clk2, respectivel y. thus, l3_echo_clk0 and l3_echo_clk2 are phase-aligned with the input cl ock received at the srams. the mpc7457 will latch the incoming data on the rising edge of l3_echo_clk0 and l3_echo_clk2. table 14 provides the l3 bus interface ac timing sp ecifications for the c onfiguration shown in figure 11 , assuming the timing relationships of figure 12 and the loading of figure 8 . l3_echo_clk[0,1,2,3] l3 data and data vm vm = midpoint voltage (gv dd /2) parity inputs l3_clk[0,1] addr, l3cntl vm t l3chov t l3chox vm l3data write t l3choz vm vm vm vm t l3chdv t l3chdx vm vm vm outputs inputs t l3cldv t l3cldx t l3cldz t l3dveh t l3dxel t l3dvel t l3dxeh note: t l3dveh and t l3dvel as drawn here are negative numbers, that is, input setup time is time after the clock edge. note: t l3chdv and t l3cldv as drawn here will be negative numbers, that is, output valid time will be time before the clock edge.
electrical and thermal characteristics mpc7457 risc microprocessor hardware specifications, rev. 8 freescale semiconductor 31 table 14. l3 bus interface ac timing specifications for pb2 and late write srams at recommended operating conditions. see ta b l e 4 . parameter symbol all revisions and l3 i/o voltage modes unit notes min max l3_clk rise and fall time t l3cr , t l3cf ?0.75ns1, 2 setup times: data and parity t l3dveh 0.1 ? ns 2, 3 input hold times: data and parity t l3dxeh 0.7 ? ns 2, 3 valid times: data and parity t l3chdv ? 2.5 ns 2, 4, 5 valid times: all other outputs t l3chov ?1.8ns5 output hold times: data and parity t l3chdx 1.4 ? ns 2, 4, 5 output hold times: all other outputs t l3chox 1.0 ? ns 2, 5 l3_clk to high impedance: data and parity t l3chdz ?3.0ns2 l3_clk to high impedance: all other outputs t l3choz ?3.0ns2 notes : 1. rise and fall times for the l3_clk out put are measured from 20% to 80% of gv dd . 2. timing behavior and characterization are currently being evaluated. 3. all input specifications are measured from the midpoint of the signal in question to the midpoint voltage of the rising edge of the input l3_echo_clk n (see figure 10 ). input timings are measured at the pins. 4. all output specifications are measured from the midpoint voltage of the rising edge of l3_clk n to the midpoint of the signal in question. the output timings are measured at the pi ns. all output timings assume a purely resistive 50- load (see figure 10 ). 5. assumes default value of l3ohcr. see section 5.2.4.1, ?effects of l3ohcr se ttings on l3 bus ac specifications ,? for more information.
mpc7457 risc microprocessor hardware specifications, rev. 8 electrical and thermal characteristics freescale semiconductor 32 figure 11 shows the typical connection di agram for the mpc7457 interfaced to pb2 srams or late write srams. figure 11. typical synchronous 1-mbyte l3 cache late write or pb2 interface l3_addr[16:0] l3_cntl [0] sa[16:0] k k ss sw zz g sram 0 dq[0:17] dq[18:36 ] l3_cntl [1] gv dd /2 1 gnd gnd sram 1 gv dd /2 1 gnd gnd {l3_data[0:15], {l3_data[16:31], {l3_data[32:47], l3_clk[0] l3_clk[1] l3_echo_clk[0] l3_echo_clk[1] l3_echo_clk[2] {l3_data[48:63], l3_dp[0:1]} l3_dp[2:3]} l3_dp[4:5]} l3_dp[6:7]} denotes receive (sram to mpc7457) aligned signals mpc7457 denotes transmit (mpc7457 to sram) aligned signals l3_echo_clk[3] sa[16:0] k k ss sw zz g dq[0:17] dq[18:36 ] note: 1. or as recommended by sram manufacturer for single-ended clocking.
electrical and thermal characteristics mpc7457 risc microprocessor hardware specifications, rev. 8 freescale semiconductor 33 figure 12 shows the l3 bus timing diagrams for the mp c7457 interfaced to pb2 or late write srams. figure 12. l3 bus timing diagrams for late write or pb2 srams 5.2.5 ieee 1149.1 ac timing specifications table 15 provides the ieee 1149.1 (jtag) ac ti ming specifications as defined in figure 14 through figure 17 . table 15. jtag ac timing specifications (independent of sysclk) 1 at recommended operating conditions. see ta b l e 4 . parameter symbol min max unit notes tck frequency of operation f tclk 033.3mhz tck cycle time t tclk 30 ? ns tck clock pulse width measured at 1.4 v t jhjl 15 ? ns tck rise and fall times t jr and t jf 02ns trst assert time t trst 25 ? ns 2 input setup times: boundary-scan data tms, tdi t dvjh t ivjh 4 0 ? ? ns 3 input hold times: boundary-scan data tms, tdi t dxjh t ixjh 20 25 ? ? ns 3 l3_echo_clk[0,2] l3 data and data vm vm = midpoint voltage (gv dd /2) t l3dveh t l3dxeh parity inputs l3_clk[0,1] addr, l3_cntl vm t l3chov t l3chox vm l3data write t l3chdz outputs inputs l3_echo_clk[1,3] t l3chdv t l3chdx t l3choz
mpc7457 risc microprocessor hardware specifications, rev. 8 electrical and thermal characteristics freescale semiconductor 34 figure 13 provides the ac test load for tdo and the boundary-scan outputs of the mpc7457. figure 13. alternate ac test load for the jtag interface figure 14 provides the jtag clock input timing diagram. figure 14. jtag clock input timing diagram figure 15 provides the trst timing diagram. figure 15. trst timing diagram valid times: boundary-scan data tdo t jldv t jlov 4 4 20 25 ns 4 output hold times: boundary-scan data tdo t jldx t jlox 30 30 ? ? ns 4 tck to output high impedance: boundary-scan data tdo t jldz t jloz 3 3 19 9 ns 4, 5 notes: 1. all outputs are measured from the midpoint voltage of the falling/rising edge of tclk to the midpoint of the signal in questi on. the output timings are m easured at the pins. all output ti mings assume a purely resistive 50- load (see figure 13 ). time-of-flight delays must be added for trac e lengths, vias, and connectors in the system. 2. trst is an asynchronous level sensitive signal. the setup time is for test purposes only. 3. non-jtag signal input timing with respect to tck. 4. non-jtag signal output timing with respect to tck. 5. guaranteed by design and characterization. table 15. jtag ac timing specifi cations (indepe ndent of sysclk) 1 (continued) at recommended operating conditions. see ta b l e 4 . parameter symbol min max unit notes output z 0 = 50 ov dd /2 r l = 50 t tclk vm vm vm vm = midpoint voltage (ov dd /2) t jr t jf t jhjl tclk trst t trst vm = midpoint voltage (ov dd /2) vm vm
electrical and thermal characteristics mpc7457 risc microprocessor hardware specifications, rev. 8 freescale semiconductor 35 figure 16 provides the boundary-scan timing diagram. figure 16. boundary-scan timing diagram figure 17 provides the test access port timing diagram. figure 17. test access port timing diagram vm tck boundary boundary boundary data outputs data inputs data outputs vm = midpoint voltage (ov dd /2) t dxjh t dvjh t jldv t jldz input data valid output data valid output data valid t jldx vm vm tck tdi, tms tdo output data valid vm = midpoint voltage (ov dd /2) t ixjh t ivjh t jlov t jloz input data valid tdo output data valid t jlox vm
mpc7457 risc microprocessor hardware specifications, rev. 8 pin assignments freescale semiconductor 36 6 pin assignments figure 18 (part a) shows the pinout of the mpc7447, 360 cbg a package as viewed from the top surface. part b shows the side profile of the cbga package to indicate the direction of the top surface view. figure 18. pinout of the mpc7447, 360 cbga package as viewed from the top surface a b c d e f g h j k l m n p r t 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 not to scale 17 18 19 u v w part a view part b die substrate assembly encapsulant
pin assignments mpc7457 risc microprocessor hardware specifications, rev. 8 freescale semiconductor 37 figure 19 (part a) shows the pinout of the mpc7457, 483 cbg a package as viewed from the top surface. part b shows the side profile of the cbga package to indicate the direction of the top surface view. figure 19. pinout of the mpc7457, 483 cbga package as viewed from the top surface a b c d e f g h j k l m n p r t 12 3 4 5678 910111213141516 not to scale 17 18 19 u v w 20 21 22 y aa ab part a view part b die substrate assembly encapsulant
mpc7457 risc microprocessor hardware specifications, rev. 8 pinout listings freescale semiconductor 38 7 pinout listings table 16 provides the pinout listing fo r the mpc7447, 360 cbga package. table 17 provides the pinout listing for the mpc7457, 483 cbga package. note this pinout is not compatible with the mpc750, mpc7400, or mpc7410 360 bga package. table 16. pinout listing for th e mpc7447, 360 cbga package signal name pin number active i/o i/f select 1 notes a[0:35] e11, h1, c11, g3, f10, l2, d11, d1, c10, g2, d12, l3, g4, t2, f4, v1, j4, r2, k5, w2, j2, k4, n4, j3, m5, p5, n3, t1, v2, u1, n5, w1, b12, c4, g10, b11 high i/o bvsel 2 aack r1 low input bvsel ap[0:4] c1, e3, h6, f5, g7 high i/o bvsel artry n2 low i/o bvsel 3 av dd a8 ? input n/a bg m1 low input bvsel bmode0 g9 low input bvsel 4 bmode1 f8 low input bvsel 5 br d2 low output bvsel bvsel b7 high input bvsel 1, 6 ci j1 low output bvsel ckstp_in a3 low input bvsel ckstp_out b1 low output bvsel clk_out h2 high output bvsel d[0:63] r15, w15, t14, v16, w16, t15, u15, p14, v13, w13, t13, p13, u14, w14, r12, t12, w12, v12, n11, n10, r11, u11, w11, t11, r10, n9, p10, u10, r9, w10, u9, v9, w5, u6, t5, u5, w7, r6, p7, v6, p17, r19, v18, r18, v19, t19, u19, w19, u18, w17, w18, t16, t18, t17, w3, v17, u4, u8, u7, r7, p6, r8, w8, t8 high i/o bvsel dbg m2 low input bvsel dp[0:7] t3, w4, t4, w9, m6, v3, n8, w6 high i/o bvsel drdy r3 low output bvsel 7 dti[0:3] g1, k1, p1, n1 high input bvsel 8 ext_qual a11 high input bvsel 9 gbl e2 low i/o bvsel
pinout listings mpc7457 risc microprocessor hardware specifications, rev. 8 freescale semiconductor 39 gnd b5, c3, d6, d13, e17, f3, g17, h4, h7, h9, h11, h13, j6, j8, j10, j12, k7, k3, k9, k11, k13, l6, l8, l10, l12, m4, m7, m9, m11, m13, n7, p3 , p9, p12, r5, r14, r17, t7, t10, u3, u13, u17, v5, v8, v11, v15 ??n/a hit b2 low output bvsel 7 hreset d8 low input bvsel int d4 low input bvsel l1_tstclk g8 high input bvsel 9 l2_tstclk b3 high input bvsel 10 no connect a6, a13, a14, a15, a16, a17, a18, a19, b13, b14, b15, b16, b17, b18, b19, c13, c14, c15, c16, c17, c18, c19, d14, d15, d16, d17, d18, d19, e12, e13, e14, e15, e16, e19, f12, f13, f14, f15, f16, f1 7, f18, f19, g11, g12, g13, g14, g15, g16, g19, h14, h15, h16, h17, h18, h19, j14, j15, j16, j17, j18, j19, k15, k16, k17, k18, k19, l14, l15, l16, l17, l18, l19, m14, m15, m16, m17, m18, m19, n12, n13, n14, n15, n16, n17, n18, n19, p15, p16, p18, p19 ?? ?11 lssd_mode e8 low input bvsel 6, 12 mcp c9 low input bvsel ov dd b4, c2, c12, d5, e18, f2, g1 8, h3, j5, k2, l5, m3, n6, p2, p8, p11, r4, r13, r16, t6, t9, u2, u12, u16, v4, v7, v10, v14 ??n/a pll_cfg[0:4] b8, c8, c7, d7, a7 high input bvsel pmon_in d9 low input bvsel 13 pmon_out a9 low output bvsel qack g5 low input bvsel qreq p4 low output bvsel shd [0:1] e4, h5 low i/o bvsel 3 smi f9 low input bvsel sreset a2 low input bvsel sysclk a10 ? input bvsel ta k6 low input bvsel tben e1 high input bvsel tbst f11 low output bvsel tck c6 high input bvsel tdi b9 high input bvsel 6 tdo a4 high output bvsel table 16. pinout listing for the mpc7447, 360 cbga package (continued) signal name pin number active i/o i/f select 1 notes
mpc7457 risc microprocessor hardware specifications, rev. 8 pinout listings freescale semiconductor 40 tea l1 low input bvsel test[0:3] a12, b6, b10, e10 ? input bvsel 12 test[4] d10 ? input bvsel 9 tms f1 high input bvsel 6 trst a5 low input bvsel 6, 14 ts l4 low i/o bvsel 3 tsiz[0:2] g6, f7, e7 high output bvsel tt[0:4] e5, e6, f6, e9, c5 high i/o bvsel wt d3 low output bvsel v dd h8, h10, h12, j7, j9, j11, j13, k8, k10, k12, k14, l7, l9, l11, l13, m8, m10, m12 ??n/a notes: 1. ov dd supplies power to the processor bus, jtag, and all control signals; and v dd supplies power to the processor core and the pll (after filtering to become av dd ). to program the i/o voltage, connect bvsel to either gnd (selects 1.8 v) or to hreset (selects 2.5 v). if used , the pull-down resistor should be less than 250 . for actual recommended value of v in or supply voltages see ta bl e 4 . 2. unused address pins must be pulled down to gnd. 3. these pins require weak pull-up resistors (for example, 4.7 k ) to maintain the control signals in the negated state after they have been actively negated and released by the mpc7447 and other bus masters. 4. this signal selects between mpx bus mode (asserted) and 60x bus mode (negated) and will be sampled at hreset going high. 5. this signal must be negated during reset, by pull up to ov dd or negation by ?hreset (inverse of hreset ), to ensure proper operation. 6. internal pull up on die. 7. ignored in 60x bus mode. 8. these signals must be pulled down to gnd if unused, or if the mpc7447 is in 60x bus mode. 9. these input signals are for factory use only and must be pulled down to gnd for normal machine operation. 10.this test signal is recommended to be tied to hreset ; however, other configurations wi ll not adversely affect performance. 11.these signals are for factory use only and must be left unconnected for normal machine operation. 12.these input signals are for factory use only and must be pulled up to ov dd for normal machine operation. 13.this pin can externally cause a performance monitor ev ent. counting of the event is enabled via software. 14.this signal must be asserted during reset, by pull down to gnd or assertion by hreset , to ensure proper operation. table 17. pinout listing for th e mpc7457, 483 cbga package signal name pin number active i/o i/f select 1 notes a[0:35] e10, n4, e8, n5, c8, r2 , a7, m2, a6, m1, a10, u2, n2, p8, m8, w4, n6, u6, r5 , y4, p1, p4, r6, m7, n7, aa3, u4, w2, w1, w3, v4, aa1, d10, j4, g10, d9 high i/o bvsel 2 aack u1 low input bvsel ap[0:4] l5, l6, j1, h2, g5 high i/o bvsel artry t2 low i/o bvsel 3 table 16. pinout listing for the mpc7447, 360 cbga package (continued) signal name pin number active i/o i/f select 1 notes
pinout listings mpc7457 risc microprocessor hardware specifications, rev. 8 freescale semiconductor 41 av dd b2 ? input n/a bg r3 low input bvsel bmode0 c6 low input bvsel 4 bmode1 c4 low input bvsel 5 br k1 low output bvsel bvsel g6 high input n/a 6, 7 ci r1 low output bvsel ckstp_in f3 low input bvsel ckstp_out k6 low output bvsel clk_out n1 high output bvsel d[0:63] ab15, t14, r14, ab13, v14, u14, ab14, w16, aa11, y11, u12, w13, y14, u13, t12, w12, ab12, r12, aa13, ab11, y12, v11, t11, r11, w10, t10, w11, v10, r10, u10, aa10, u9, v7, t8, ab4, y6, ab7, aa6, y8, aa7, w8, ab10, aa 16, ab16, ab17, y18, ab18, y16, aa18, w14, r1 3, w15, aa14, v16, w6, aa12, v6, ab9, ab6, r7, r9, aa9, ab8, w9 high i/o bvsel dbg v1 low input bvsel dp[0:7] aa2, ab3, ab2, aa8, r8, w5, u8, ab5 high i/o bvsel drdy t6 low output bvsel 8 dti[0:3]) p2, t5, u3, p6 high input bvsel 9 ext_qual b9 high input bvsel 10 gbl m4 low i/o bvsel gnd a22, b1, b5, b12, b14, b1 6, b18, b20, c3, c9, c21, d7, d13, d15, d17, d19, e2, e5, e21, f10, f12, f14, f16, f19, g4, g7, g17, g21, h13, h15, h19, h5, j3, j10, j12, j14, j17, j21, k5 , k9, k11, k13, k15, k19, l10, l12, l14, l17, l21, m3, m6, m9, m11, m13, m19, n10, n12, n14, n17, n21, p3, p9, p11, p13, p15, p19, r17, r21, t13, t15, t19, t4, t7, t9, u17, u21, v2, v5, v8, v1 2, v15, v19, w7, w17, w21, y3, y9, y13, y15, y20, aa5, aa17, ab1, ab22 ??n/a gv dd b13, b15, b17, b1 9, b21, d12, d14, d16, d18, d21, e19, f13, f15, f 17, f21, g19, h12, h14, h17, h21, j19, k17, k21, l19, m17, m 21, n19, p17, p21, r15, r19, t17, t21, u19, v17, v21, w19, y21 ??n/a11 hit k2 low output bvsel 8 hreset a3 low input bvsel int j6 low input bvsel table 17. pinout listing for the mpc7457, 483 cbga package (continued) signal name pin number active i/o i/f select 1 notes
mpc7457 risc microprocessor hardware specifications, rev. 8 pinout listings freescale semiconductor 42 l1_tstclk h4 high input bvsel 10 l2_tstclk j2 high input bvsel 12 l3vsel a4 high input n/a 6, 7 l3addr[18:0] h11, f20, j16, e22, h1 8, g20, f22, g2 2, h20, k16, j18, h22, j20, j22, k18, k20, l16, k22, l18 high output l3vsel l3_clk[0:1] v22, c17 high output l3vsel l3_cntl [0:1] l20, l22 l ow output l3vsel l3data[0:63] aa19, ab20, u16, w 18, aa20, ab21, aa21, t16, w20, u18, y22, r16, v20, w22, t18, u20, n18, n20, n16, n22, m16, m18, m20, m22, r18, t20, u22, t22, r20, p18, r22, m15, g18, d22, e20, h16, c22, f18, d20, b22, g16, a21, g15, e17, a20, c19, c18, a19, a18, g14, e15, c1 6, a17, a16, c15, g13, c14, a14, e13, c13, g12, a13, e12, c12 high i/o l3vsel l3dp[0:7] ab19, aa22, p22, p16, c20, e16, a15, a12 high i/o l3vsel l3_echo_clk[0,2] v18, e18 high input l3vsel l3_echo_clk[1,3] p20, e14 high i/o l3vsel lssd_mode f6 low input bvsel 7, 13 mcp b8 low input bvsel no connect a8, a11, b6, b11, c 11, d11, d3, d5, e11, e7, f2, f11, g2, h9 ??n/a14 ov dd b3, c5, c7, c10, d2, e3, e9 , f5, g3, g9, h7, j5, k3, l7, m5, n3, p7, r4, t3, u5, u7, u11, u15, v3, v9, v13, y2, y5, y7, y10, y17, y19, aa4, aa15 ??n/a pll_cfg[0:4] a2, f7, c2, d4, h8 high input bvsel pmon_in e6 low input bvsel 15 pmon_out b4 low output bvsel qack k7 low input bvsel qreq y1 low output bvsel shd [0:1] l4, l8 low i/o bvsel 3 smi g8 low input bvsel sreset g1 low input bvsel sysclk d6 ? input bvsel ta n8 low input bvsel tben l3 high input bvsel tbst b7 low output bvsel tck j7 high input bvsel table 17. pinout listing for the mpc7457, 483 cbga package (continued) signal name pin number active i/o i/f select 1 notes
pinout listings mpc7457 risc microprocessor hardware specifications, rev. 8 freescale semiconductor 43 tdi e4 high input bvsel 7 tdo h1 high output bvsel tea t1 low input bvsel test[0:5] b10, h6, h10, d8, f9, f8 ? input bvsel 13 test[6] a9 ? input bvsel 10 tms k4 high input bvsel 7 trst c1 low input bvsel 7, 16 ts p5 low i/o bvsel 3 tsiz[0:2] l1,h3,d1 high output bvsel tt[0:4] f1, f4, k8, a5, e1 high i/o bvsel wt l2 low output bvsel v dd j9, j11, j13, j15, k10, k12, k14, l9, l11, l13, l15, m10, m12, m14, n9, n11, n13, n15, p10, p12, p14 ??n/a vdd_sense[0:1] g11, j8 ? ? n/a 17 notes: 1. ov dd supplies power to the processor bus, jtag, and all control signals except the l3 cache controls (l3ctl[0:1]); gv dd supplies power to the l3 cache interface (l3addr[0:17], l3 data[0:63], l3dp[0:7], l3_echo _clk[0:3], and l3_clk[0:1]) and the l3 control signals l3_cntl [0:1]; and v dd supplies power to the processor core and the pll (after filtering to become av dd ). for actual recommended value of v in or supply voltages, see ta bl e 4 . 2. unused address pins must be pulled down to gnd. 3. these pins require weak pull-up resistors (for example, 4.7 k ) to maintain the control signals in the negated state after they have been actively negated and released by the mpc7457 and other bus masters. 4. this signal selects between mpx bus mode (asserted) and 60x bus mode (negated) and will be sampled at hreset going high. 5. this signal must be negated during reset, by pull up to ov dd or negation by ?hreset (inverse of hreset ), to ensure proper operation. 6. see ta b l e 3 for bus voltage configuration information. if used, pull-down resistors should be less than 250 . 7. internal pull up on die. 8. ignored in 60x bus mode. 9. these signals must be pulled down to gnd if unused or if the mpc7457 is in 60x bus mode. 10.these input signals for factory use only and must be pulled down to gnd for normal machine operation. 11.power must be supplied to gv dd , even when the l3 interface is disabled or unused. 12.this test signal is recommended to be tied to hreset ; however, other configurations wi ll not adversely affect performance. 13.these input signals are for factory use only and must be pulled up to ov dd for normal machine operation. 14.these signals are for factory use only and must be left unconnected for normal machine operation. 15.this pin can externally cause a performance monitor ev ent. counting of the event is enabled via software. 16.this signal must be asserted during reset, by pull down to gnd or assertion by hreset , to ensure proper operation. 17.these pins are internally connected to v dd . they are intended to allow an external device to detect the core voltage level present at the processor core. if unused , they must be connected directly to v dd or left unconnected. table 17. pinout listing for the mpc7457, 483 cbga package (continued) signal name pin number active i/o i/f select 1 notes
mpc7457 risc microprocessor hardware specifications, rev. 8 package description freescale semiconductor 44 8 package description the following sections provide the package para meters and mechanical dimensions for the cbga package. 8.1 package parameters for the mpc7447, 360 cbga the package parameters are as provided in the following list. the package type is 25 25 mm, 360-lead ceramic ball grid array (cbga). package outline 25 25 mm interconnects 360 (19 19 ball array ? 1) pitch 1.27 mm (50 mil) minimum module height 2.72 mm maximum module height3.24 mm ball diameter 0.89 mm (35 mil)
package description mpc7457 risc microprocessor hardware specifications, rev. 8 freescale semiconductor 45 8.2 mechanical dimensions for the mpc7447, 360 cbga figure 20 provides the mechanical dimensions and bottom surface nomenclature for the mpc7447, 360 cbga package. figure 20. mechanical dimensions and bottom surface nomenclature for the mpc7447, 360 cbga package notes: 1. dimensioning and tolerancing per asme y14.5m, 1994. 2. dimensions in millimeters. 3. top side a1 corner index is a metalized feature with various shapes. bottom side a1 corner is designated with a ball missing from the array. 0.2 c a 360x d 2x a1 corner e e 0.2 2x c b 12345678910111213141516 a b c d e f g h j k l m n p r t b 0.3 a 0.15 b a 0.15 a 17 18 19 u w v millimeters dim min max a 2.72 3.20 a1 0.80 1.00 a2 1.10 1.30 a3 ? 0.6 b 0.82 0.93 d 25.00 bsc d1 ? 11.3 d2 8.0 ? d3 ? 6.5 d4 10.9 11.1 e 1.27 bsc e 25.00 bsc e1 ? 11.3 e2 8.0 ? e3 ? 6.5 e4 9.55 9.75 capacitor region 1 d3 e2 e1 a a1 a2 a3 e4 d4 e3 d1 d2 0.35 a
mpc7457 risc microprocessor hardware specifications, rev. 8 package description freescale semiconductor 46 8.3 substrate capacitors for the mpc7447, 360 cbga figure 21 shows the connectivity of th e substrate capacitor pads for the mpc7447, 360 cbga. all capacitors are 100 nf. figure 21. substrate bypass capacitors for the mpc7447, 360 cbga capacitor pad number -1 -2 c1 gnd v dd c2 gnd v dd c3 gnd ov dd c4 gnd v dd c5 gnd v dd c6 gnd v dd c7 gnd v dd c8 gnd v dd c9 gnd ov dd c10 gnd v dd c11 gnd v dd c12 gnd v dd c13 gnd v dd c14 gnd v dd c15 gnd v dd c16 gnd ov dd c17 gnd v dd c18 gnd ov dd c19 gnd v dd c20 gnd v dd c21 gnd ov dd c22 gnd v dd c23 gnd v dd c24 gnd v dd 1 c1-2 c1-1 c2-1 c3-1 c4-1 c5-1 c6-1 c6-2 c5-2 c4-2 c3-2 c2-2 c18-1 c18-2 c17-2 c16-2 c15-2 c14-2 c13-2 c13-1 c14-1 c15-1 c16-1 c17-1 c12-1 c12-2 c11-2 c10-2 c9-2 c8-2 c7-2 c7-1 c8-1 c9-1 c10-1 c11-1 c19-2 c19-1 c20-1 c21-1 c22-1 c23-1 c24-1 c24-2 c23-2 c22-2 c21-2 c20-2 a1 corner
package description mpc7457 risc microprocessor hardware specifications, rev. 8 freescale semiconductor 47 8.4 package parameters for the mpc7457, 483 cbga or rohs bga the package parameters are as provided in the following list. th e package type is 29 29 mm, 483 ceramic ball grid array (cbga). package outline 29 29 mm interconnects 483 (22 22 ball array ? 1) pitch 1.27 mm (50 mil) minimum module height ? maximum module height3.22 mm ball diameter 0.89 mm (35 mil)
mpc7457 risc microprocessor hardware specifications, rev. 8 package description freescale semiconductor 48 8.5 mechanical dimensions fo r the mpc7457, 483 cbga or rohs bga figure 22 provides the mechanical dimensions and bottom surface nomenclature for the mpc7457, 483 cbga package. figure 22. mechanical dimensions and bottom surface nomenclature for the mpc7457, 483 cbga or rohs bga package 0.2 2x notes: 1. dimensioning and tolerancing per asme y14.5m, 1994. 2. dimensions in millimeters. 3. top side a1 corner index is a metalized feature with various shapes. bottom side. a1 corner is designated with a ball missing from the array. d a1 corner e e 0.2 2x c b 12345678910111213141516 a b c d e f g h j k l m n p r t a a1 a2 a 0.15 a 17 18 19 u w v millimeters dim min max a 2.72 3.20 a1 0.80 1.00 a2 1.10 1.30 a3 -- 0.60 b 0.82 0.93 d 29.00 bsc d1 ? 12.5 d2 8.5 ? d3 ? 8.4 d4 10.9 11.1 e 1.27 bsc e 29.00 bsc e1 ? 12.5 e2 8.5 ? e3 ? 8.4 e4 9.55 9.75 c a 483x b 0.3 a 0.15 b 20 21 22 y aa ab capacitor region 1 d1 d3 e1 e3 d2 e2 a3 d4 e4 0.35 a
package description mpc7457 risc microprocessor hardware specifications, rev. 8 freescale semiconductor 49 8.6 substrate capacitors for th e mpc7457, 483 cbga or rohs bga figure 23 shows the connectivity of th e substrate capacitor pads for the mpc7457, 483 cbga or rohs bga. all capacitors are 100 nf. figure 23. substrate bypass capacitors for the mpc7457, 483 cbga or rohs bga capacitor pad number -1 -2 c1 gnd ov dd c2 gnd v dd c3 gnd gv dd c4 gnd v dd c5 gnd v dd c6 gnd gv dd c7 gnd v dd c8 gnd v dd c9 gnd gv dd c10 gnd v dd c11 gnd v dd c12 gnd gv dd c13 gnd v dd c14 gnd v dd c15 gnd v dd c16 gnd ov dd c17 gnd v dd c18 gnd ov dd c19 gnd v dd c20 gnd v dd c21 gnd ov dd c22 gnd v dd c23 gnd v dd c24 gnd v dd 1 c1-2 c1-1 c2-1 c3-1 c4-1 c5-1 c6-1 c6-2 c5-2 c4-2 c3-2 c2-2 c18-1 c18-2 c17-2 c16-2 c15-2 c14-2 c13-2 c13-1 c14-1 c15-1 c16-1 c17-1 c12-1 c12-2 c11-2 c10-2 c9-2 c8-2 c7-2 c7-1 c8-1 c9-1 c10-1 c11-1 c19-2 c19-1 c20-1 c21-1 c22-1 c23-1 c24-1 c24-2 c23-2 c22-2 c21-2 c20-2 a1 corner
mpc7457 risc microprocessor hardware specifications, rev. 8 system design information freescale semiconductor 50 9 system design information this section provides system and thermal design recommendations for successful application of the mpc7457. 9.1 clocks the following sections provide more detailed information regard ing the clocking of the mpc7457. 9.1.1 core clocks and pll configuration the mpc7457 pll is configured by the pll_cfg[0:4] signals. for a given sy sclk (bus) frequency, the pll configuration signals set the internal cpu and vco frequency of operation. the pll configuration for the mpc7457 is shown in table 18 for a set of example frequencies. in this example, shaded cells represent settings that , for a given sysclk fre quency, result in core and/or vco frequencies that do not comply with the 1-ghz column in table 8 . note that these configurations were different in some earlier mpc7450-family devices and care should be taken when upgrading to the mpc7457 to verify the correct pll settings for an application. table 18. mpc7457 microprocessor pll configuration example for 1267 mhz parts pll_cfg[0:4] bus-to- core multiplier core-to- vco multiplier example bus-to-core frequency in mhz (vco frequency in mhz) bus (sysclk) frequency 33.3 mhz 50 mhz 66.6 mhz 75 mhz 83 mhz 100 mhz 133 mhz 167 mhz 01000 2x 2x 10000 3x 2x 10100 4x 2x 667 (1333) 10110 5x 2x 667 (1333) 835 (1670) 10010 5.5x 2x 733 (1466) 919 (1837) 11010 6x 2x 600 (1200) 800 (1600) 1002 (2004) 01010 6.5x 2x 650 (1300) 866 (1730) 1086 (2171) 00100 7x 2x 700 (1400) 931 (1862) 1169 (2338) 00010 7.5x 2x 623 (1245) 750 (1500) 1000 (2000) 1253 (2505) 11000 8x 2x 600 (1200) 664 (1328) 800 (1600) 1064 (2128) 01100 8.5x 2x 638 (1276) 706 (1412) 850 (1700) 1131 (2261)
system design information mpc7457 risc microprocessor hardware specifications, rev. 8 freescale semiconductor 51 01111 9x 2x 600 (1200) 675 (1350) 747 (1494) 900 (1800) 1197 (2394) 01110 9.5x 2x 633 (1266) 712 (1524) 789 (1578) 950 (1900) 1264 (2528) 10101 10x 2x 667 (1333) 750 (1500) 830 (1660) 1000 (2000) 10001 10.5x 2x 700 (1400) 938 (1876) 872 (1744) 1050 (2100) 10011 11x 2x 733 (1466) 825 (1650) 913 (1826) 1100 (2200) 00000 11.5x 2x 766 (532) 863 (1726) 955 (1910) 1150 (2300) 10111 12x 2x 600 (1200) 800 (1600) 900 (1800) 996 (1992) 1200 (2400) 11111 12.5x 2x 600 (1200) 833 (1666) 938 (1876) 1038 (2076) 1250 (2500) 01011 13x 2x 650 (1300) 865 (1730) 975 (1950) 1079 (2158) 11100 13.5x 2x 675 (1350) 900 (1800) 1013 (2026) 1121 (2242) 11001 14x 2x 700 (1400) 933 (1866) 1050 (2100) 1162 (2324) 00011 15x 2x 750 (1500) 1000 (2000) 1125 (2250) 1245 (2490) 11011 16x 2x 800 (1600) 1066 (2132) 1200 (2400) 00001 17x 2x 850 (1900) 1132 (2264) 00101 18x 2x 600 (1200) 900 (1800) 1200 (2400) 00111 20x 2x 667 (1334) 1000 (2000) 01001 21x 2x 700 (1400) 1050 (2100) 01101 24x 2x 800 (1600) 1200 (2400) 11101 28x 2x 933 (1866) 00110 pll bypass pll off, sysclk clocks core circuitry directly table 18. mpc7457 microprocessor pll config uration example for 1267 mhz parts (continued) pll_cfg[0:4] bus-to- core multiplier core-to- vco multiplier example bus-to-core frequency in mhz (vco frequency in mhz) bus (sysclk) frequency 33.3 mhz 50 mhz 66.6 mhz 75 mhz 83 mhz 100 mhz 133 mhz 167 mhz
mpc7457 risc microprocessor hardware specifications, rev. 8 system design information freescale semiconductor 52 9.1.2 l3 clocks the mpc7457 generates the clock for the external l3 synchronous data srams by dividing the core clock frequency of the mpc7457. the core-t o-l3 frequency divisor for the l3 pll is selected through the l3_clk bits of the l3cr register . generally, the di visor must be chosen according to the frequency supported by the external rams, the frequency of the mpc7457 core, and timing an alysis of the circuit board routing. table 19 shows various example l3 clock frequencie s that can be obtai ned for a given set of core frequencies. 11110 pll off pll off, no core clocking occurs notes: 1. pll_cfg[0:4] settings not listed are reserved. 2. the sample bus-to-core frequencies shown are for reference on ly. some pll configurations ma y select bus, core, or vco frequencies which are not useful, not suppor ted, or not tested for by the mpc7455; see section 5.2.1, ?clock ac specifications,? for valid sysclk, core, and vco frequencies. 3. in pll-bypass mode, the sysclk input signal clocks the intern al processor directly and the pll is disabled. however, the bus interface unit requires a 2x clock to function. therefore, an additional signal, ext_qual, must be driven at one-half the frequency of sysclk and offset in phase to meet the required input setup t ivkh and hold time t ixkh (see ta b l e 9 ). the result is that the processor bus frequency is on e-half sysclk while the internal processor is clocked at sysclk frequency. this mode is intended for factory use and emulator tool use only. note : the ac timing specifications given in this document do not apply in pll-bypass mode. 4. in pll-off mode, no clocking occurs inside the mpc7455 regardle ss of the sysclk input. table 19. sample core-to-l3 frequencies 1 core frequency (mhz) 2 2 2.5 3 3.5 4 4.5 5 5.5 6 6.5 7 7.5 8 500 250 200 167 143 125 111 100 91 83 77 71 67 63 533 266 213 178 152 133 118 107 97 89 82 76 71 67 550 275 220 183 157 138 122 110 100 92 85 79 73 69 600 300 240 200 171 150 133 120 109 100 92 86 80 75 650 325 260 217 186 163 144 130 118 108 100 93 87 81 666 333 266 222 190 167 148 133 121 111 102 95 89 83 700 350 280 233 200 175 156 140 127 117 108 100 93 88 733 367 293 244 209 183 163 147 133 122 113 105 98 92 800 400 320 266 230 200 178 160 145 133 123 114 107 100 866 433 347 289 248 217 192 173 157 145 133 124 115 108 933 467 373 311 266 233 207 187 170 156 144 133 124 117 1000 500 400 333 285 250 222 200 182 166 154 143 133 125 table 18. mpc7457 microprocessor pll config uration example for 1267 mhz parts (continued) pll_cfg[0:4] bus-to- core multiplier core-to- vco multiplier example bus-to-core frequency in mhz (vco frequency in mhz) bus (sysclk) frequency 33.3 mhz 50 mhz 66.6 mhz 75 mhz 83 mhz 100 mhz 133 mhz 167 mhz
system design information mpc7457 risc microprocessor hardware specifications, rev. 8 freescale semiconductor 53 9.1.3 system bus clock (sysclk) and spread spectrum sources spread spectrum clock sources are an increasingly popular way to control electromagnetic interference emissions (emi) by spread ing the emitted noise to a wider sp ectrum and reducing the peak noise magnitude in order to meet industry and government requirements. these clock sources intentionally add long-term jitter in order to diffuse the emi spect ral content. the jitter specification given in table 8 considers short-term (cycle-to-cycl e) jitter only and the clock genera tor?s cycle-to-cyc le output jitter should meet the mpc7457 input cycle- to-cycle jitter requirement. fre quency modulation and spread are separate concerns, and the mpc7457 is compatible with spre ad spectrum sources if the recommendations listed in table 20 are observed. it is imperative to note that th e processor?s minimum and maximum sysclk, core, and vco frequencies must not be exceeded regardless of the type of clock source. therefore, systems in which the processor is operated at its maximum rated core or bus frequency should avoid vi olating the stated limits by using down-spreading only. 1050 525 420 350 300 263 233 191 191 175 162 150 140 131 1100 550 440 367 314 275 244 200 200 183 169 157 147 138 1150 575 460 383 329 288 256 209 209 192 177 164 153 144 1200 600 480 400 343 300 267 218 218 200 185 171 160 150 1250 638 500 417 357 313 278 227 227 208 192 179 167 156 1300 650 520 433 371 325 289 236 236 217 200 186 173 163 notes: 1. the core and l3 frequencies are for reference only. note that maximum l3 frequency is design dependent. some examples may represent core or l3 frequencies which are not usef ul, not supported, or not tested for the mpc7457; see section 5.2.3, ?l3 clock ac specifications,? for valid l3_clk frequencies and for more information regarding the maximum l3 frequency. 2. not all core frequencies are supported by all speed grades; see ta bl e 8 for minimum and maximum core frequency specifications. table 20. spread specturm clock source recommendations at recommended operating conditions. see ta b l e 4 . parameter min max unit notes frequency modulation ? 50 khz 1 frequency spread ? 1.0 % 1, 2 notes: 1. guaranteed by design. 2. sysclk frequencies resulting from frequency spreading, and the resulting core and vco frequencies, must meet the minimum and maximum specifications given in ta b l e 8 . table 19. sample core-to-l3 frequencies 1 (continued) core frequency (mhz) 2 2 2.5 3 3.5 4 4.5 5 5.5 6 6.5 7 7.5 8
mpc7457 risc microprocessor hardware specifications, rev. 8 system design information freescale semiconductor 54 9.2 pll power supply filtering the av dd power signal is provided on th e mpc7457 to provide power to the clock generation pll. to ensure stability of th e internal clock, the pow er supplied to the av dd input signal should be filtered of any noise in the 500 khz to 10 mhz resona nt frequency range of the pll. a circuit similar to the one shown in figure 24 using surface mount capacitors with mini mum effective series inductance (esl) is recommended. the circuit should be placed as close as possible to the av dd pin to minimize nois e coupled from nearby circuits. it is often possi ble to route directly from the capacitors to the av dd pin, which is on the periphery of the 360 cbga footprint and very close to th e periphery of the 483 cbga footprint, without the inductance of vias. figure 24. pll power supply filter circuit note all production 7447 and 7457 rev. b devices require a 400 resistor instead of the 10 resistor shown above. all production 7457 rev. c devices require a 10 resistor. for more information, see the mpc7450 family chip errata for the mpc7457 and mpc7447 . 9.3 decoupling recommendations due to the mpc7457 dynamic power management feature, large a ddress and data buses, and high operating frequencies, the mpc7457 can generate transi ent power surges and high frequency noise in its power supply, especially while drivi ng large capacitive loads. this noise must be prevented from reaching other components in the mpc7457 sy stem, and the mpc7457 itself requ ires a clean, tightly regulated source of power. therefore, it is recommended that the system desi gner place at least one decoupling capacitor at each v dd , ov dd , and gv dd pin of the mpc7457. it is al so recommended that these decoupling capacitors receive their power from separate v dd , ov dd /gv dd , and gnd power planes in the pcb, utilizing short traces to minimize inductance. if compromises must be made due to board constraints, v dd pins should receive the highe st priority for decoupling. these capacitors should have a va lue of 0.01 or 0.1 f. only ceramic surface mount technology (smt) capacitors should be used to minimize lead indu ctance, preferably 0508 or 0603 orientations where connections are made along the length of the part. c onsistent with the recomm endations of dr. howard johnson in high speed digital design: a handbook of black magic (prentice hall, 1993) and contrary to previous recommendations for dec oupling freescale micropro cessors, multiple small capacitors of equal value are recommended over using multiple values of capacitance. in addition, it is recommended that there be severa l bulk storage capacitors distributed around the pcb, feeding the v dd , gv dd , and ov dd planes, to enable quick rechargi ng of the smaller chip capacitors. these bulk capacitors should have a low equivalent series resistance (esr) ra ting to ensure the quick v dd av dd 10 2.2 f 2.2 f gnd low esl surface mount capacitors
system design information mpc7457 risc microprocessor hardware specifications, rev. 8 freescale semiconductor 55 response time necessary. they shoul d also be connected to the power and ground planes through two vias to minimize inductance. suggested bulk capacitors: 100?330 f (avx tps tantalum or sanyo oscon). 9.4 connection recommendations to ensure reliable operation, it is highly recommende d to connect unused inputs to an appropriate signal level. unused active low inputs should be tied to ov dd . unused active high input s should be connected to gnd. all nc (no-connect) signals must remain unconnected. power and ground connections must be made to all external v dd , ov dd , gv dd , and gnd pins in the mpc7457. if the l3 interface is not used, gv dd should be connected to the ov dd power plane, and l3vsel should be connected to bvsel; the remai nder of the l3 interface may be left unterminated. 9.5 output buffer dc impedance the mpc7457 processor bus and l3 i/ o drivers are characterized over pr ocess, voltage, and temperature. to measure z 0 , an external resistor is conne cted from the chip pad to ov dd or gnd. then, the value of each resistor is varied until the pad voltage is ov dd /2 (see figure 25 ). the output impedance is the average of two compone nts, the resistances of the pull-up and pull-down devices. when data is he ld low, sw2 is closed (sw1 is open), and r n is trimmed until the voltage at the pad equals ov dd /2. r n then becomes the resistance of the pul l-down devices. when data is held high, sw1 is closed (sw2 is open), and r p is trimmed until the voltage at the pad equals ov dd /2. r p then becomes the resistance of the pull-up devices. r p and r n are designed to be close to each other in value. then, z 0 = (r p + r n )/2. figure 25. driver impedance measurement table 21 summarizes the signal impedance results. the impedance increases with junction temperature and is relatively unaff ected by bus voltage. ov dd ognd r p r n pad data sw1 sw2
mpc7457 risc microprocessor hardware specifications, rev. 8 system design information freescale semiconductor 56 9.6 pull-up/pull-down resistor requirements the mpc7457 requires high-re sistive (weak: 4.7-k ) pull-up resistors on several control pins of the bus interface to maintain the control signals in the nega ted state after they have been actively negated and released by the mpc7457 or other bus masters. these pins are: ts , artry , shdo , and shd1 . some pins designated as being for fa ctory test must be pulled up to ov dd or down to gnd to ensure proper device operation. for the mpc7447, 360 bga, the pins that must be pulled up to ov dd are: lssd_mode and test[0:3]; the pins that must be pulled down to gnd are: l1_tstclk and test[4]. for the mpc7457, 483 bga, the pins that must be pulled up to ov dd are: lssd_mode and test[0:5]; the pins that must be pulled down are: l1_tstclk and test[6]. the ckstp_in signal should likewise be pulled up through a pull-up resi stor (weak or stronger: 4.7?1 k ) to prevent erroneous assertions of this signal. in addition, the mpc7457 has one ope n-drain style output that require s a pull-up resistor (weak or stronger: 4.7?1 k ) if it is used by the syst em. this pin is ckstp_out . if pull-down resistors are used to configure bvs el or l3vsel, the resistors should be less than 250 (see table 16 ). because pll_cfg[0:4] must remain st able during normal operation, strong pull-up and pull-down resistors (1 k or less) are recommended to configure th ese signals in order to protect against erroneous switching due to ground bounce, power supply noise or noise coupling. during inactive periods on the bus, the address and transfer attributes ma y not be driven by any master and may, therefore, float in the high- impedance state for relatively long periods of time. because the mpc7457 must continually monitor these si gnals for snooping, this float conditi on may cause excessive power draw by the input receivers on the mpc7457 or by other receivers in the syst em. these signals can be pulled up through weak (10-k ) pull-up resistors by the system, addr ess bus driven mode enabled (see the mpc7450 risc microprocessor family users? manual for more information about this mode), or they may be otherwise driven by the system during inactive periods of the bus to avoid this additional power draw. preliminary studies have shown the additional pow er draw by the mpc7457 input receivers to be negligible and, in any event, none of these measures are necessary for proper device operation. the snooped address and transfer attribute inputs are: a[0: 35], ap[0:4], tt[0:4], ci , wt , and gbl . if extended addressing is not us ed, a[0:3] are unused and must be pulled low to gnd through weak pull-down resistors. if the mpc7457 is in 60x bus m ode, dti[0:3] must be pulled low to gnd through weak pull-down resistors. the data bus input receivers are normally turned off wh en no read operation is in progress and, therefore, do not require pull-up resistors on the bus. other data bus receivers in the system, however, may require pull-ups, or that those signals be ot herwise driven by the system during inactive periods by the system. the data bus signals are: d[0:63] and dp[0:7]. table 21. impedance characteristics v dd = 1.5 v, ov dd = 1.8 v 5%, t j = 5?85c impedance processor bus l3 bus unit z 0 typical 33?42 34?42 maximum 31?51 32?44
system design information mpc7457 risc microprocessor hardware specifications, rev. 8 freescale semiconductor 57 if address or data parity is not used by the system, and the respective parity ch ecking is disabled through hid0, the input receivers for those pins are disable d, and those pins do not require pull-up resistors and should be left unconnected by the system. if all pari ty generation is disabled through hid0, all parity checking should also be disabled th rough hid0, and all parity pins may be left unconnected by the system. the l3 interface does not normally require pull-up re sistors. unused l3_addr signals are driven low when the sram is configured to be less than 1 m in size via l3cr. for example, l3_add[18] will be driven low if the sram size is configured to be 2 m; likewise, l3_addr[18:17] will be driven low if the sram size is configured to be 1 m. 9.7 jtag configuration signals boundary-scan testing is enabled thro ugh the jtag interface signals. the trst signal is optional in the ieee 1149.1 specification, but is provided on all processors that implement the powerpc architecture. while it is possible to force the tap controller to th e reset state using only the tck and tms signals, more reliable power-on rese t performance will be obtained if the trst signal is asserted during power-on reset. because the jtag interface is also used for acces sing the common on-chip processor (cop) function, simply tying trst to hreset is not practical. the cop function of these processors allows a remote computer system (typically, a pc with dedicated hardware and debugging softwa re) to access and control the internal operations of the processor. the cop interface connects primarily through the jtag port of the processor, with some additional status monitoring signals. the cop port requires the ability to independently assert hreset or trst in order to fully control the processor. if the target system has independent reset sources, such as voltage monitors, watchdog timers, power supply failures , or push-button switches, the cop reset signals must be merged into these signals with logic. the arrangement shown in figure 26 allows the cop port to independently assert hreset or trst , while ensuring that the target can drive hreset as well. if the jtag interf ace and cop head er will not be used, trst should be tied to hreset through a 0- isolation resistor so that it is asserted when the system reset signal (hreset ) is asserted, ensuring that the jtag scan chain is initialized during power-on. while freescale recommends that the cop header be designe d into the system as shown in figure 26 , if this is not possible, the isolation resistor will allow future access to trst in the case where a jtag interface may need to be wired onto the system in debug situations. the cop header shown in figure 26 adds many benefits?breakpoints, wa tchpoints, register and memory examination/modification, and other standard debugger features are po ssible through this interface?and can be as inexpensive as an unpopulated footpr int for a header to be added when needed. the cop interface has a standard header for conn ection to the target system, based on the 0.025" square-post, 0.100" centered header assembly (often called a berg header). th e connector typically has pin 14 removed as a connector key. there is no standardized way to number the cop header shown in figure 26 ; consequently, many different pin numbers have been observed from emulator vendors. some ar e numbered top-to-bottom then left-to-right, while others use left-t o-right then top-to-bottom, while st ill others number the pins counter clockwise from pin 1 (as with an ic). regardless of the numberi ng, the signal placement recommended in figure 26 is common to all known emulators.
mpc7457 risc microprocessor hardware specifications, rev. 8 system design information freescale semiconductor 58 the qack signal shown in figure 26 is usually connected to the pci bridge chip in a system and is an input to the mpc7457 inform ing it that it can go into the quiesce nt state. under normal operation this occurs during a low-power mode se lection. in order for cop to wor k, the mpc7457 must see this signal asserted (pulled down). while shown on the cop header, not all emulator products drive this signal. if the product does not, a pull-down resistor can be populated to assert this signa l. additionally, some emulator products implement open-drain type outputs and can only drive qack asserted; for these tools, a pull-up resistor can be implemented to ensure this signal is deasserted when it is not being driven by the tool. note that the pull-up and pull-down resistors on the qack signal are mutually exclusive and it is never necessary to populate both in a system. to preserve correct power-down operation, qack should be merged via logic so that it also can be driven by the pci bridge.
system design information mpc7457 risc microprocessor hardware specifications, rev. 8 freescale semiconductor 59 figure 26. jtag interface connection hreset hreset from target board sources hreset 13 sreset sreset sreset 11 vdd_sense 6 5 1 15 2 k 10 k 10 k 10 k ov dd ov dd ov dd ov dd chkstp_in chkstp_in 8 tms tdo tdi tck tms tdo tdi tck 9 1 3 4 trst 7 16 2 10 (if any) cop header 14 2 key qack ov dd ov dd 10 k ov dd trst 10 k ov dd 10 k 10 k qack qack chkstp_out chkstp_out 3 13 9 5 1 6 10 2 15 11 7 16 12 8 4 key no pin cop connector physical pin out 10 k 4 ov dd 1 2 k 3 0 5 12 6 nc notes: 1. run/stop , normally found on pin 5 of the cop header, is not implemented on the mpc7457. connect pin 5 of the cop header to ov dd with a 10-k pull-up resistor. 2. key location; pin 14 is not physically present on the cop header. 3. component not populated. populate only if debug tool does not drive qack . 4. populate only if debug tool uses an open-drain type output and does not actively deassert qack . 5. if the jtag interface is implemented, connect hreset from the target source to trst from the cop header though an and gate to trst of the part. if the jtag interface is not implemented, connect hreset from the target source to trst of the part through a 0- isolation resistor. 6. though defined as a no-connect, it is a comm on and recommended practice to use pin 12 as an additional gnd pin for improved signal integrity.
mpc7457 risc microprocessor hardware specifications, rev. 8 system design information freescale semiconductor 60 9.8 thermal management information this section provides thermal management informati on for the ceramic ball gr id array (cbga) package for air-cooled applications. proper thermal control design is primarily depende nt on the system-level design?the heat sink, airflow, and th ermal interface material. to reduce the die-junction te mperature, heat sinks may be attached to the packag e by several methods?spring clip to holes in the prin ted-circuit board or package, and mounting clip and screw assembly (see figure 27 ); however, due to the potential large mass of the heat sink, attachment thr ough the printed-circuit board is su ggested. if a spring clip is used, the spring force should not exceed 10 pounds. figure 27. package exploded cross-sectiona l view with several heat sink options the board designer can choose between several types of heat sinks to place on the mpc7457. there are several commercially availabl e heat sinks for the mpc7457 provided by the following vendors: aavid thermalloy 603-224-9988 80 commercial st. concord, nh 03301 internet: www.aav idthermalloy.com alpha novatech 408-749-7601 473 sapena ct. #15 santa clara, ca 95054 internet: www.alp hanovatech.com calgreg thermal solutions 401-732-8100 60 alhambra road warwick, ri 02886 internet: www.calgreg thermalsolutions.com international electron ic research corporation (ierc) 818-842-7277 413 north moss st. burbank, ca 91502 internet: www.ctscorp.com thermal heat sink cbga package heat sink clip printed-circuit board interface material
system design information mpc7457 risc microprocessor hardware specifications, rev. 8 freescale semiconductor 61 tyco electronics 800-522-6752 chip coolers? p.o. box 3668 harrisburg, pa 17105-3668 internet: www.chipcoolers.com wakefield engineering 603-635-5102 33 bridge st. pelham, nh 03076 internet: www.wakefield.com ultimately, the final selection of an appropriate heat sink depends on many factors, such as thermal performance at a given air veloci ty, spatial volume, ma ss, attachment method, assembly, and cost. 9.8.1 internal package conduction resistance for the exposed-die packaging technology, shown in table 5 , the intrinsic conduction thermal resistance paths are as follows: ? the die junction-to-case (actually top-of-die since silicon die is e xposed) thermal resistance ? the die junction-to-ball thermal resistance figure 28 depicts the primary heat transfer path for a p ackage with an attached heat sink mounted to a printed-circuit board. figure 28. c4 package with heat sink mounted to a printed-circuit board heat generated on the active side of the chip is conducte d through the silicon, through the heat sink attach material (or thermal interface material), and finally to the heat sink where it is removed by forced-air convection. because the silicon thermal resistance is quite small, for a first-order analysis, the temperature drop in the silicon may be neglected. thus, the thermal interf ace material and the heat sink conduction/convective thermal resistances are the dominant terms. external resistance external resistance internal resistance radiation convection radiation convection heat sink printed-circuit board thermal interface material package/leads die junction die/package (note the internal versus external package resistance.)
mpc7457 risc microprocessor hardware specifications, rev. 8 system design information freescale semiconductor 62 9.8.2 thermal interface materials a thermal interface material is recommended at th e package lid-to-heat sink interface to minimize the thermal contact resistance. for t hose applications where the heat sink is attached by spring clip mechanism, figure 29 shows the thermal performance of three thin-sheet thermal-interface materials (silicone, graphite/oil, flor oether oil), a bare joint, and a joint wi th thermal grease as a function of contact pressure. as shown, the performance of these thermal interface materials improves with increasing contact pressure. the use of thermal grease si gnificantly reduces the interface ther mal resistance. that is, the bare joint results in a thermal resistance approximately seven times greater than the thermal grease joint. often, heat sinks are attached to th e package by means of a spring clip to holes in the printed-circuit board (see figure 27 ). therefore, the synthetic grease offers the best thermal performan ce, considering the low interface pressure and is recomm ended due to the high power dissipa tion of the mpc7457. of course, the selection of any thermal interfac e material depends on many factors? thermal performanc e requirements, manufacturability, service temperature, dielectric properties, cost, etc. figure 29. thermal performance of select thermal interface material the board designer can choose between several types of thermal interfac e. heat sink adhesive materials should be selected based on high conductivity, yet adequate mechan ical strength to meet equipment shock/vibration requirements. there are several commercially available thermal interfaces and adhesive materials provided by the following vendors: 0 0.5 1 1.5 2 0 1020304050607080 silicone sheet (0.006 in.) bare joint floroether oil sheet (0.007 in.) graphite/oil sheet (0.005 in.) synthetic grease contact pressure (psi) specific thermal resistance (k-in. 2 /w)
system design information mpc7457 risc microprocessor hardware specifications, rev. 8 freescale semiconductor 63 the bergquist company 800-347-4572 18930 west 78 th st. chanhassen, mn 55317 internet: www.bergquistcompany.com chomerics, inc. 781-935-4850 77 dragon ct. woburn, ma 01888-4014 internet: www.chomerics.com dow-corning corporation 800-248-2481 dow-corning electronic materials 2200 w. salzburg rd. midland, mi 48686-0997 internet: www.dow.com shin-etsu microsi, inc. 888-642-7674 10028 s. 51st st. phoenix, az 85044 internet: www.microsi.com thermagon inc. 888-246-9050 4707 detroit ave. cleveland, oh 44102 internet: www.thermagon.com the following section pr ovides a heat sink se lection example using one of th e commercially available heat sinks. 9.8.3 heat sink selection example for preliminary heat sink sizing, the die-juncti on temperature can be expressed as follows: t j = t i + t r + (r jc + r int + r sa ) p d where: t j is the die-junction temperature t i is the inlet cabinet ambient temperature t r is the air temperature rise within the computer cabinet r jc is the junction-to-case thermal resistance r int is the adhesive or interfac e material thermal resistance r sa is the heat sink base-to- ambient thermal resistance p d is the power dissipated by the device during operation, the die-j unction temperatures (t j ) should be maintained less than the value specified in table 4 . the temperature of air cooling the component greatly depends on th e ambient inlet air temperature and the air temperature rise within the electronic cabi net. an electronic cabinet inlet-air temperature (t a ) may range from 30 to 40c. the air temperature rise within a cabinet (t r ) may be in the range of 5 to 10c. the thermal resistance of th e thermal interface material (r int ) is typically about 1.5c/w. for
mpc7457 risc microprocessor hardware specifications, rev. 8 system design information freescale semiconductor 64 example, assuming a t a of 30c, a t r of 5c, a cbga package r jc = 0.1, and a typical power consumption (p d ) of 18.7 w, the following expression for t j is obtained: die-junction temperature: t j = 30c + 5c + (0.1c/w + 1.5c/w + sa ) 18.7 w for this example, a r sa value of 2.1c/w or less is required to maintain the di e junction temperature below the maximum value of table 4 . though the die junction-to-ambient and the heat sink-to-ambient th ermal resistances are a common figure-of-merit used for comparing the thermal pe rformance of various mi croelectronic packaging technologies, one should exerci se caution when only using this metr ic in determining thermal management because no single parameter can adequa tely describe three-dimensional heat flow. the final die-junction operating temperature is not only a function of th e component-level thermal resistance, but the system-level design and its operati ng conditions. in addition to the co mponent's power consumption, a number of factors affect the fina l operating die-junction temperature? airflow, board population (local heat flux of adjacent components), heat sink efficiency , heat sink attach, heat si nk placement, next-level interconnect technology, system air temperature rise, altitude, etc. due to the complexity and the many variations of system-level boundary conditions for today's microelectronic equipment, the comb ined effects of the he at transfer mechanisms (radiation, convection, and conduction) may vary widely. for these reasons, we recommend using conjugate heat transfer models for the board, as well as system-level designs. for system thermal modeling, the mpc7447 an d mpc7457 thermal mo del is shown in figure 30 . four volumes will be used to represent this device. two of the volumes, solder ball, and air and substrate, are modeled using the package outline size of the packag e. the other two, die, and bump and underfill, have the same size as the die. the silicon die should be modeled 9.64 11.0 0.74 mm with the heat source applied as a uniform source at th e bottom of the volume. the bump and underfill layer is modeled as 9.64 11.0 0.069 mm (or as a collapsed volume) with orthotr opic material properties: 0.6 w/(m ? k) in the xy-plane and 2 w/(m ? k) in the direction of the z-axis. the substrate volume is 25 25 1.2 mm (mpc7447) or 29 29 1.2 mm (mpc7457), and this volume ha s 18 w/(m ? k) isotropic conductivity. the solder ball and air layer is m odeled with the same horizontal dimens ions as the substrate and is 0.9 mm thick. it can also be modeled as a collapsed volume using orthotropic material properties: 0.034 w/(m ? k) in the xy-plane direction and 3.8 w/(m ? k) in the direction of the z-axis.
part numbering and marking mpc7457 risc microprocessor hardware specifications, rev. 8 freescale semiconductor 65 figure 30. recommended thermal model of mpc7447 and mpc7457 10 part numbering and marking ordering information for the part s fully covered by this specifi cation document is provided in section 10.1, ?part numbers fully addressed by this document.? note that the individual part numbers correspond to a maximum processor core frequency. for available frequencies, contact your local freescale sales office. in addition to the processor frequency, the part numbering sc heme also includes an application modifier which may spec ify special application conditions. each part nu mber also contains a revision level code which refers to the die mask revision number. section 10.2, ?part numbers not fully addressed by this document,? lists the part numbers which do not fu lly conform to the specifications of this document. these special part numbers require an additional document called a referred to as a hardware specification addendum. 10.1 part numbers fully addressed by this document table 22 provides the freescale part numbe ring nomenclature for the mpc7457. bump and underfill die substrate solder and air die substrate side view of model (not to scale) top view of model (not to scale) x y z conductivity value unit bump and underfill k x 0.6 w/(m ? k) k y 0.6 k z 2 substrate k18 solder ball and air k x 0.034 k y 0.034 k z 3.8
mpc7457 risc microprocessor hardware specifications, rev. 8 part numbering and marking freescale semiconductor 66 10.2 part numbers not fully addressed by this document parts with application modifiers or revision levels not fully addre ssed are described in a separate addendum, which supplement and supersed e this hardware specification. as such parts are released, these specifications will be li sted in this section. table 22. part numbering nomenclature mc 74 x 7 xx nnnn l x product code part identifier package processor frequency 1 application modifier revision level ppc 2 mc 7457 7447 rx = cbga 867 1000 1200 1267 l: 1.3 v 50 mv 0 to 105 c b: 1.1; pvr = 8002 0101 mc 7457 rx = cbga vg = rohs bga 867 1000 1200 1267 c: 1.2; pvr = 8002 0102 notes: 1. processor core frequencies supported by parts addressed by this specification only. parts addressed by a hardware specification addendum may support other maximum core frequencies. 2. the p prefix in a freescale part number designates a ?pilo t production prototype? as defined by freescale sop 3-13. these parts have only preliminary reliability and characte rization data. before pilot production prototypes may be shipped, written authorization from the customer must be on file in the applicable sales office acknowledging the qualification status and the fa ct that product changes may still occur wh ile shipping pilot production prototypes. table 23. part numbers addressed by mpc74x7rx nnnn n x series hardware specifications addendum (document order no. mpc7457ecs01ad) mc 74 x 7 xx nnnn n x product code part identifier package processor frequency application modifier revision level ppc 7457 rx = cbga 1000 867 733 600 n: 1.1 v 50 mv 0 to 105 c b: 1.1; pvr = 8002 0101 7447 1000 867 mc 7447 1000 867 733 600 b: 1.1; pvr = 8002 0101 7457 rx = cbga vg = rohs bga 1000 867 733 600 c: 1.2; pvr = 8002 0102
part numbering and marking mpc7457 risc microprocessor hardware specifications, rev. 8 freescale semiconductor 67 10.3 part marking parts are marked as the examples shown in figure 31 . figure 31. part marking for bga device table 24. part numbers addressed by mpc7457trx nnnn lb series hardware specifications addendum (document order no. mpc7457ecs02ad) mc 7457 t rx nnnn l x product code part identifier specification modifier package processor frequency application modifier revision level mc 7457 t = extended temperature device rx = cbga 1000 1267 l: 1.3 v 50 mv ?40 to 105 c c: 1.2; pvr = 8002 0102 table 25. part numbers addressed by mpc7457trx nnnn n x series hardware specifications addendum (document order no. mpc7457ecs03ad) mc 74 x 7t rx nnnn n x product code part identifier specification modifier package processor frequency application modifier revision level mc 7447 t = extended temperature device rx = cbga 733 1000 n: 1.1 v 50 mv ?40 to 105 c b: 1.1; pvr = 8002 0101 7457 c: 1.2; pvr = 8002 0102 bga notes : mmmmmm is the 6-digit mask number. atwlyywwa is the traceability code. mc7457 rx nnnn l x mmmmmm atwlyywwa 7457 bga mc7447 rx1 nnn l x mmmmmm atwlyywwa 7447
mpc7457 risc microprocessor hardware specifications, rev. 8 document revision history freescale semiconductor 68 11 document revision history table 26 provides a revision history fo r this hardware specification. table 26. document revision history revision number date substantive change(s) 8 04/09/2013 updated template. updated ta b l e 1 4 ?l3 bus interface ac timing specifications for pb2 and late write srams?. moved revision history to the end of the document. 7 3/28/2006 updated template. section 2, reworded l1 and l2 cache descriptions. removed note references for ci and wt in table 12. added vg package signifier for 7457 only. 6 7/22/2005 revised note in section 9.2. added heat sink vendor to list in section 9.8. corrected bump and underfill model dimension in section 9.8.3. 5 9/9/2004 updated document to new freescale template. updated section numbering and changed reference from part number specifications to addendums. added rev. 1.2 devices, including increased l3 clock max frequency to 250 mhz and improved l3 ac timing. table 5: added cte information. table 8: modified jitter specifications to conform to jedec standards, changed jitter specification to cycle-to-cycle jitter (instead of long- and sh ort-term jitter); changed jitter bandwidth recommendations. table 13: deleted note 9 and renumbered. table 14: deleted note 5 and renumbered. table 17: revised note 6. added section 9.1.3. section 9.2: changed filter resi stor recommendations. recommend 10 resistor for all production devices, including production rev. 1.1 devices. 400 resistor needed only for early rev. 1.1 devices. table 22: reversed the order of revision numbers. added tables 25 and 26. 4.1 section 9.1.1: corrected note r egarding different pll configurations for earlier devices; all mpc7457 devices to date conform to this table. section 9.6 : added information about unused l3_addr signals. table 24: changed title to include document order information for mpc74x7rxnnnnnx series part number specification.
document revision history mpc7457 risc microprocessor hardware specifications, rev. 8 freescale semiconductor 69 4 table 9: corrected pin lists for input and ou tput ac timing to correctly show hit as an output-only signal added specifications for 1267 mhz devices; removed specs for 1300 mhz devices. section 5.2.3: changed recommendations regarding use of l3 clock jitter in ac timing analysis. the l3 jitter is now fully comprehended in the ac timing specs and does not need to be included in the timing analysis. 3 corrected numerous errors in li sts of pins associated with t khov , t khox , t ivkh , and t ixkh in table 9. added support for 1.5 v l3 interface voltage; issues fixed in rev. 1.1. corrected typos in table 12. added data to table 2. clarified address bus pull-up resistor recommendations in section 1.9.6. modified table 9, figure 5, and figure 6 to more accurately show when the mode select inputs (bmode [0:1], l3vsel, bvsel) are sampl ed and ac timi ng requirements table 10: added skew and jitter values. table 14: added ac timing values. table 24: updated to reflect past and current pa rt numbers not fully covered by this document. ta b l e 6 : r e m o ve d c v ih and cv il ; v ih and v il for sysclk input is the same as for other input signals, and is now noted accordingly in this table. table 7: removed doze mode power entry (but left footnote 4 for clarity); documentation change only. nontechnical formatting 2 added substrate capacitor informat ion in sections 1.8.3 and 1.8.6. increased minimum processor and vco frequencies in table 8 from 500 and 1000 mhz to 600 and 1200 mhz (respectively). corrected maximum processor frequency for 1300 mhz devices in table 8 (changed from 1333 to 1300 mhz). added value for to t l3cskw1 table 10. added l3ohcr information in section 1.5.2.4.1. added values for t co and t eci to table 11. added note 8 to table 13 and note 6 to table 14. changed resistor value in pll filter in figure 25 from 10 to 400 . added 867 mhz speed grade. corrected product code in tables 22 and 23. added pull-up/pull-down recommendations for ckstp_in and pll_cfg[0:4] to section 1.9.6. 1.1 nontechnical reformatting. table 26. document revision history (continued) revision number date substantive change(s)
mpc7457 risc microprocessor hardware specifications, rev. 8 document revision history freescale semiconductor 70 1 removed support for 1.5 v l3 interface voltage from tables 3 and 4. 1.5 v i/o voltage is not supported in current mpc7457 devices. added package thermal characteristics values to table 5, made minor revisions to section 1.9.8. added preliminary ac timing values to tables 10 and 12. added footnotes to table 17. 0 initial release. table 26. document revision history (continued) revision number date substantive change(s)
document number: mpc7457ec rev. 8 04/2013 information in this document is provided solely to enable system and software implementers to use freescale semiconduct ors products. there are no express or implied copyright licenses granted hereunder to design or fabricate any integrated circuits or integrated circuits bas ed on the information in this document. freescale semiconductor reserves the right to make changes without further notice to any products herein. freescale semiconductor makes no warranty, representation, or guarantee regarding the suitability of its prod ucts for any particular purpose, nor does freescale semiconductor assume any liability arising out of the application or use of any product or circuit, and specifically discla ims any liability, including without limitation consequential or incidental damages. "typical" parameters that may be provided in freescale semiconductor data sheets and/or s pecifications can and do vary in different applications and actual performance may vary over time. all operating parameters, including "typicals", must be validated for each customer application by customer's technical experts. freescale semiconduct or does not convey any license under its patent rights nor the rights of others. freescale semiconductor products are not designed, intended, or authorized for us e as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which failure of the freescale semiconductor product could create a situation where personal injury or death may occur. should buyer purchase or use freescale semiconductor products for any such unintended or unauthorized application, buyer shall indemnify freescale semiconductor and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claims alleges that freescale semiconductor was negligent regarding the design or manufacture of the part. rohs-compliant and/or pb-free versions of freescale products have the functionality and electrical characteristics as thei r non-rohs-complaint and/or non-pb-free counterparts. for further information, see http://www.freescale.com or contact your freescale sales representative. for information on freescale's environmental products program, go to http://www.freescale.com/epp. freescale? and the freescale logo are trademarks of freescale semiconductor, inc. all other product or service names are the property of their respective owners. ?2004-2013 freescale semiconductor, inc. how to reach us: home page: www.freescale.com web support: http://www.freescale.com/support usa/europe or locations not listed: freescale semiconductor technical information center, el516 2100 east elliot road tempe, arizona 85284 +1-800-521-6274 or +1-480-768-2130 www.freescale.com/support europe, middle east, and africa: freescale halbleiter deutschland gmbh technical information center schatzbogen 7 81829 muenchen, germany +44 1296 380 456 (english) +46 8 52200080 (english) +49 89 92103 559 (german) +33 1 69 35 48 48 (french) www.freescale.com/support japan: freescale semiconductor japan ltd. headquarters arco tower 15f 1-8-1, shimo-meguro, meguro-ku tokyo 153-0064 japan 0120 191014 or +81 3 5437 9125 support.japan@freescale.com asia/pacific: freescale semiconductor china ltd. exchange building 23f no. 118 jianguo road chaoyang district beijing 100022 china +86 10 5879 8000 support.asia@freescale.com

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