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ks8695p integrated multi-port pci gateway solution rev. 1.5 xcelerouter is a trademark of micrel , inc. amd is a registered trademark of adv anced micro devices, inc. arm is a trademark o f advanced risc machines ltd. intel is a registered trademark of intel corporation. wince is a registered trademark of microsoft corporation. micrel inc. ? 2180 fortune drive ? san jose, ca 95131 ? usa ? tel +1 ( 408 ) 944-0800 ? fax + 1 (408) 474-1000 ? http://www.micrel.com may 2006 m9999-051806 general description the centaur ks8695p, mu lti-port pci gateway solution, delivers a new level of networking integration, performance, and overall bom cost savings, enabling original equipment manufacturers (oems) to provide customers with feature-rich, low-cost solutions for the residential gateway and small office environment. ? integration of a pci arbiter supporting three external masters. ? allows incorporation of a variety of productivity enhancing system interfaces, including the expanding 802.11 a/g/b wireless lan. ? high-performance arm? cpu (arm9) with 8kb i-cache, 8kb d-cache, and a memory management unit (mmu) for linux and wince ? support. ? xcelerouter? technology to accelerate packet processing. ? proven wire-speed switching te chnology that includes 802.1q tag-based vlan and quality of service (qos) support. ? five patented mixed-signal, low-powered fast ethernet transceivers with correspo nding media access control (mac) units. ? advanced memory interface with programmable 8/16/32- bit data and 22-bit address bus with up to 64mb of total memory space for flash, rom, sram, sdram, and external peripherals. functional diagram supports up to 3 external pci masters
micrel, inc. ks8695p may 2006 2 m9999-051806 features the centaur ks8695p f eaturing xcelerouter technology is a single-chip, multi-port pci "gateway-on- a-chip" with all the key components integrated for a high- performance and low-cost broadband gateway. ? arm9 high-performance cpu core ? arm9 core at 166mhz ? 8kb i-cache and 8kb d-cache ? memory management unit (mmu) for linux and wince ? 32-bit arm and 16-bit thumb instruction sets for smaller memory footprints ? 33mhz 32-bit pci interface ? version pci 2.1 ? supports bus mastership or guest-mode ? supports normal and memory-mapped i/o ? support for minipci and cardbus peripherals ? integrated ethernet transceivers and switch engine ? five 10/100 ethernet transceivers and ve macs (1p for wan interface, 4p for lan switching) ? 100base-fx mode option on the wan port and one lan port ? automatic mdi/mdi-x crossover on all ports ? wire-speed, non-blocking switch ? 802.1q tag-based vlan (16 vlans, full range vid) ? port-based vlan ? qos/cos packet prioritization support: per port, 802.1p, and diffserv-based ? 64kb on-chip frame buffer sram ? vlan id and 802.1p tag/untag option per port ? 802.1d spanning tree protocol support ? programmable rate-limiting per port: 0mbps to 100mbps, ingress and egress, rate options for high and low priority ? extensive mib counter management support ? igmp snooping for multicast packet ltering ? dedicated 1k entry look-up engine ? port mirroring/monitoring/snif ng ? broadcast and multicast storm protection with % control global and per port basis ? full- and half-duplex ow control ? xcelerouter technology ? tcp/udp/ip packet header checksum generation to of oad cpu tasks ? ipv4 packet ltering on checksum errors ? automatic error packet discard ? dma engine with burst-mode support for ef cient wan/lan data transfers ? fifos for back-to-back packet transfers ? memory and external i/o interfaces ? 8/16/32-bit wide shared data path for flash, rom, sram, sdram, and external i/o ? total memory space up to 64mb ? intel ? /amd ? -type flash support ? peripheral support ? 8/16/32-bit external i/o interface supporting pcmcia or generic cpu/dsp host i/f ? sixteen general purpose input/output (gpio) ? two 32-bit timer counters (one watchdog) ? interrupt controller ? system design ? up to 166mhz cpu and 125mhz bus speed ? 289 pbga package (19mm x 19mm) saving board real estate ? two power supplies: 1.8v core and ethernet rx supply, 3.3v i/o and ethernet tx supply ? built-in led controls ? debugging ? arm9 jtag debug interface ? uart for console port or modem back-up ? power management ? cpu and system clock speed step-down options ? low-power ethernet transceivers ? per port power-down and ethernet transmit disable ? reference hardware and software evaluation kit ? hardware evaluation board (passes class b emi) ? board support package including rmware source codes, linux kernel, and software stacks ? complete hardware and software reference designs available applications ? multi-port wireless voip gateway ? wireless mesh network node ? rg + combo 802.11 a/b/g/n access point ? multimedia gateway ? digital audio access point ? network storage element ? multi-port broadband gateway ? multi-port rewall and vpn appliances ? combination wireless and wireline gateway ? fiber-to-the-home managed cpe
micrel, inc. ks8695p may 2006 3 m9999-051806 ordering information commercial part number standard pb (lead)-free temperature range package ks8695p ksz8695p 0 to +70c 289-pin pbga industrial part number standard pb (lead)-free temperature range package ks8695pi KSZ8695PI ?40 to +85c 289-pin pbga revision history revision date summary of changes 0.9 05/13/03 created. 0.91 06/04/03 corrected wrstpls sets wrsto to ac tive low when ?1?, and active high when ?0?. 0.92 06/10/03 changed pin a1 to gnd. changed pin e3, h7, j7, k7, l7 to agnd. changed figure 5 wrstpls to pull up. 0.93 07/11/03 removed pci 2.2 compliance. removed tm from centaur. added lanfxsd1 signal description. 0.94 07/17/03 updated dc electr ical characteristics. 0.95 08/11/03 added addressing description to memory controller and address pin description table 11. changed prstn to input in table 10. 1.0 09/02/03 changed figure 1. removed old register address tables and replaced with figure 11. added memory interface examples, figures 7,8, and 9. adde d memory interface description, section 2.5. 1.1 09/29/03 changed figure 2. 1.2 08/04/04 transferred to micrel fo rmat and updated system clock. 1.3 01/27/05 added recommended reset circuit. 1.4 08/18/05 added wireless applicatio ns. added pb-free and industrial speci cation. edits to pin description table. 1.5 05/18/06 added pb-free opt ion for industrial speci cation.
micrel, inc. ks8695p may 2006 4 m9999-051806 contents system level applications ............................................................................................................................... .................... 5 pin description ............................................................................................................................... ....................................... 6 pin configuration ............................................................................................................................... ................................. 14 functional description ............................................................................................................................... ........................ 15 introduct ion ................................................................................................................... .................................................... 15 cpu features ................................................................................................................... ................................................ 15 pci to ahb brid ge features..................................................................................................... ........................................ 15 switch engine .................................................................................................................. ................................................. 16 advanced memory cont roller features............................................................................................ ................................ 16 direct memory acce ss (dma) engines ............................................................................................. ............................... 16 protocol engine and xcel erouter? te chnology .................................................................................... ......................... 16 network interface.............................................................................................................. ................................................ 16 peripher als.................................................................................................................... .................................................... 17 other fe atures................................................................................................................. ................................................. 17 signal description ............................................................................................................................... ................................ 18 system level hardware interfaces............................................................................................... .................................... 18 configurat ion pins ............................................................................................................. ............................................... 18 reset.......................................................................................................................... ....................................................... 19 system clock ................................................................................................................... ................................................. 20 memory in terface............................................................................................................... ............................................... 21 signal descripti ons by group ................................................................................................... ........................................ 25 address map and register description ............................................................................................................................ 35 memory map ..................................................................................................................... ................................................ 35 memory map example............................................................................................................. ......................................... 35 register description ........................................................................................................... .............................................. 35 absolute maximum ratings ............................................................................................................................... ................ 36 operating ratings ............................................................................................................................... ................................ 36 electrical characteristics ............................................................................................................................... .................... 36 timing diagrams ............................................................................................................................... .................................. 38 package information ............................................................................................................................... ............................ 42
micrel, inc. ks8695p may 2006 5 m9999-051806 system level applications figure 1. ks8695p pci gateway system options
micrel, inc. ks8695p may 2006 6 m9999-051806 pin description signal list alphabetized by name pin number pin name type (1) pin function u4 addr0 o address bit. t4 addr1 o address bit. r3 addr10 o address bit. p1 addr11 o address bit. p2 addr12 o address bit. n1 addr13 o address bit. n2 addr14 o address bit. n3 addr15 o address bit. n4 addr16 o address bit. m1 addr17 o address bit. m2 addr18 o address bit. m3 addr19 o address bit. u3 addr2 o address bit. p3 addr20/ba0 o address bit/bank ad dress bit 0 for sdram interface. p4 addr2/ba1 o address bit/bank ad dress bit 1 for sdram interface. t3 addr3 o address bit. u2 addr4 o address bit. u1 addr5 o address bit. t1 addr6 o address bit. t2 addr7 o address bit. r1 addr8 o address bit. r2 addr9 o address bit. e3 agnd gnd analog signal ground. h7 agnd gnd analog signal ground. j7 agnd gnd analog signal ground. k7 agnd gnd analog signal ground. l7 agnd gnd analog signal ground. d14 cben0 i/o pci commands an d byte enable 0. active low. a11 cben1 i/o pci commands an d byte enable 1. active low. b9 cben2 i/o pci commands an d byte enable 2. active low. a6 cben3 i/o pci commands an d byte enable 3. active low. b10 clkrunn i/o cardbus clock run request signal. active low. u15 data0 i/o external data bit. t15 data1 i/o external data bit. u12 data10 i/o external data bit. t12 data11 i/o external data bit. note : 1. gnd = ground. o = output. i/o = bidirectional.
micrel, inc. ks8695p may 2006 7 m9999-051806 pin number pin name type (1) pin function r12 data12 i/o external data bit. p12 data13 i/o external data bit. u11 data14 i/o external data bit. t11 data15 i/o external data bit. r11 data16 i/o external data bit. p11 data17 i/o external data bit. u10 data18 i/o external data bit. t10 data19 i/o external data bit. u14 data2 i/o external data bit. r10 data20 i/o external data bit. p10 data21 i/o external data bit. u9 data22 i/o external data bit. t9 data23 i/o external data bit. r9 data24 i/o external data bit. p9 data25 i/o external data bit. u8 data26 i/o external data bit. t8 data27 i/o external data bit. r8 data28 i/o external data bit. p8 data29 i/o external data bit. t14 data3 i/o external data bit. r7 data30 i/o external data bit. p7 data31 i/o external data bit. r14 data4 i/o external data bit. p14 data5 i/o external data bit. u13 data6 i/o external data bit. t13 data7 i/o external data bit. r13 data8 i/o external data bit. p13 data9 i/o external data bit. c11 devseln i/o pci device se lect signal. active low. r16 ecsn0 o external i/o device chip select. active low. t16 ecsn1 o external i/o device chip select. active low. u16 ecsn2 o external i/o device chip select. active low. t17 eroen/ wrstpls o/i rom/sram/flash and external i/o output enable. active low. wrsto polarity select. wrstpls = 0, wr sto = active high; wrstpls = 1, active low. m17 erwen0/ testack o external i/o and rom/sram/flash write byte enable. active low. n17 erwen1/ testreqb o external i/o and rom/sram/flash write byte enable. active low. p17 erwen2/ testreqa o external i/o and rom/sram/flash write byte enable. active low. note : 1. o = output. i/o = bidirectional. o/i = output in normal mode; input pin during reset.
micrel, inc. ks8695p may 2006 8 m9999-051806 pin number pin name type (1) pin function r17 erwen3/ tictestenn o external i/o and rom/sram/flash write byte enable. active low. p16 ewaitn i external wait. active low. d10 framen i/o pci bus frame signal. active low. a1 gnd gnd signal ground. g7 gnd gnd signal ground. g8 gnd gnd signal ground. g9 gnd gnd signal ground. g10 gnd gnd signal ground. g11 gnd gnd signal ground. h8 gnd gnd signal ground. h9 gnd gnd signal ground. h10 gnd gnd signal ground. h11 gnd gnd signal ground. j8 gnd gnd signal ground. j9 gnd gnd signal ground. j10 gnd gnd signal ground. j11 gnd gnd signal ground. k8 gnd gnd signal ground. k9 gnd gnd signal ground. k10 gnd gnd signal ground. k11 gnd gnd signal ground. l8 gnd gnd signal ground. l9 gnd gnd signal ground. l10 gnd gnd signal ground. l11 gnd gnd signal ground. c4 gnt1n o pci bus grant 2. active low. output for host bridge mode and guest bridge mode. c3 gnt2n o pci bus grant 2. active low. ou tput for host bridge mode. not used in guest bridge mode. c2 gnt3n o pci bus grant 3. active low. ou tput for host bridge mode. not used in guest bridge mode. g17 gpio0/eint0 i/o general purpose i/o pin. external interrupt request pin. g16 gpio1/eint1 i/o general purpose i/o pin. external interrupt request pin. k17 gpio10 i/o general purpose i/o pin. k16 gpio11 i/o general purpose i/o pin. k15 gpio12 i/o general purpose i/o pin. k14 gpio13 i/o general purpose i/o pin. l17 gpio14 i/o general purpose i/o pin. note : 1. gnd = ground. i = input. o = output. i/o = bidirectional.
micrel, inc. ks8695p may 2006 9 m9999-051806 pin number pin name type (1) pin function l16 gpio15 i/o general purpose i/o pin. h17 gpio2/eint2 i/o general purpose i/o pin. external interrupt request pin. h16 gpio3/eint3 i/o general purpose i/o pin. external interrupt request pin. h15 gpio4/tout0 i/o general purpose i/o pin. timer 0 output pin. h14 gpio5/tout1 i/o general purpose i/o pin. timer 1 output pin. j17 gpio6 i/o general purpose i/o pin. j16 gpio7 i/o general purpose i/o pin. j15 gpio8 i/o general purpose i/o pin. j14 gpio9 i/o general purpose i/o pin. d7 idsel i initialization device select. active high. a9 irdyn i/o pci initiator ready signal. active low. f1 iset i set phy transmit output current. connect to ground with 3.01k ? 1% resistor. b17 l1led0 o lan port 1 led programmable indicator 0. active low. b16 l1led1 o lan port 1 led programmable indicator 1. active low. c17 l2led0 o lan port 2 led programmable indicator 0. active low. c16 l2led1 o lan port 2 led programmable indicator 1. active low. d17 l3led0 o lan port 3 led programmable indicator 0. active low. d16 l3led1 o lan port 3 led programmable indicator 1. active low. e17 l4led0 o lan port 4 led programmable indicator 0. active low. e16 l4led1 o lan port 4 led programmable indicator 1. active low. h4 lanrxm1 i lan port 1 phy receive signal ? (differential). j4 lanrxm2 i lan port 2 phy receive signal ? (differential). k4 lanrxm3 i lan port 3 phy receive signal ? (differential). l4 lanrxm4 i lan port 4 phy receive signal ? (differential). h3 lanrxp1 i lan port 1 phy receive signal + (differential). j3 lanrxp2 i lan port 2 phy receive signal + (differential). k3 lanrxp3 i lan port 3 phy receive signal + (differential). l3 lanrxp4 i lan port 4 phy receive signal + (differential). h2 lantxm1 o lan port 1 phy transmit signal ? (differential). j2 lantxm2 o lan port 2 phy transmit signal ? (differential). k2 lantxm3 o lan port 3 phy transmit signal ? (differential). l2 lantxm4 o lan port 4 phy transmit signal ? (differential). h1 lantxp1 o lan port 1 phy transmit signal + (differential). j1 lantxp2 o lan port 2 phy transmit signal + (differential). k1 lantxp3 o lan port 3 phy transmit signal + (differential). l1 lantxp4 o lan port 4 phy transmit signal + (differential). e4 m66en i pci 66 mhz enable. d2 mpciactn o minipci ac tive signal. active low. a16 pad0 i/o pci address and data 0. note : 1. i = input. o = output. i/o = bidirectional.
micrel, inc. ks8695p may 2006 10 m9999-051806 pin number pin name type (1) pin function a15 pad1 i/o pci address and data 1. b13 pad10 i/o pci address and data 10. d13 pad11 i/o pci address and data 11. a12 pad12 i/o pci address and data 12. c12 pad13 i/o pci address and data 13. b12 pad14 i/o pci address and data 14. d12 pad15 i/o pci address and data 15. c9 pad16 i/o pci address and data 16. a8 pad17 i/o pci address and data 17. d9 pad18 i/o pci address and data 18. b8 pad19 i/o pci address and data 19. c15 pad2 i/o pci address and data 2. d8 pad20 i/o pci address and data 20. a7 pad21 i/o pci address and data 21. c7 pad22 i/o pci address and data 22. b7 pad23 i/o pci address and data 23. c6 pad24 i/o pci address and data 24. b6 pad25 i/o pci address and data 25. d6 pad26 i/o pci address and data 26. a5 pad27 i/o pci address and data 27. c5 pad28 i/o pci address and data 28. b5 pad29 i/o pci address and data 29. b15 pad3 i/o pci address and data 3. d5 pad30 i/o pci address and data 30. a4 pad31 i/o pci address and data 31. d15 pad4 i/o pci address and data 4. a14 pad5 i/o pci address and data 5. c14 pad6 i/o pci address and data 6. b14 pad7 i/o pci address and data 7. a13 pad8 i/o pci address and data 8. c13 pad9 i/o pci address and data 9. c8 par i/o pci parity. d3 pbms i pci bridge mode select. ?1? = host bridge mode. ?0? = guest bridge mode. d4 pclk i pci bus clock. a2 pclkout0 o pci clock output 0. b1 pclkout1 o pci clock output 1. c1 pclkout2 o pci clock output 2. d1 pclkout3 o pci clock output 3. b11 perrn i/o pci parity error signal. active low. a3 prstn i pci reset. active low. note : 1. i = input. o = output. i/o = bidirectional.
micrel, inc. ks8695p may 2006 11 m9999-051806 pin number pin name type (1) pin function p15 rcsn0 o rom/sram/flash chip select. active low. r15 rcsn1 o rom/sram/flash chip select. active low. b4 req1n i pci bus request 1. active low . input for host bridge mode and guest bridge mode. b3 req2n i pci bus request 2. active low. input for host bridge mode, not used in guest bridge mode. b2 req3n i pci bus request 3. active low. input for host bridge mode, not used in guest mode a17 resetn i ks8695p chip reset. active low. t5 sdcasn o sdram column address strobe. active low. p5 sdcsn0 o sdram chip select. active low chip select pins for sdram. r4 sdcsn1 o sdram chip select. active low chip select pins for sdram. t7 sdiclk i sdram clock in. u7 sdoclk o system/sdram clock out. u6 sdqm0 o sdram data input/output mask. t6 sdqm1 o sdram data input/output mask. r6 sdqm2 o sdram data input/output mask. p6 sdqm3 o sdram data input/output mask. r5 sdrasn o sdram row address strobe. active low. u5 sdwen o sdram write enable. active low. a10 serrn o pci system error signal. active low. d11 stopn i/o pci stop signal. active low. g14 tck i jtag test clock. f14 tdi i jtag test data in. f15 tdo o jtag test data out. m4 test1 i phy test pin (factory reserved test signal). f4 test2 i phy test pin (factory reserved test signal). f17 testen i chip test enable (factory rese rved test signal). must be connected to gnd for normal operation. g15 tms i jtag test mode select. c10 trdyn i/o pci target ready signal. active low. f16 trstn i jtag test reset. active low. m14 uctsn/ bisten i uart data set ready. active low. bi st enable (factory reserved test signal). l15 udcdn/ scanen i uart data carrier detect. scan enab le (factory reserved test signal). m16 udsrn i uart data set ready. active low. n15 udtrn/ dbgenn o/i uart data terminal ready. acti ve low. debug enable (factory reserved test signal). l14 urin/tstrst i uart ring indicator/chip te st reset (factory reserved test signal). m15 urtsn/ cpuclksel o/i uart request to send/cpu clock select. note : 1. i = input. o = output. i/o = bidirectional. o/i = output in normal mode; input pin during reset.
micrel, inc. ks8695p may 2006 12 m9999-051806 pin number pin name type (1) pin function n16 urxd i uart receive data. n14 utxd o uart transmit data. e7 vdd1.8 p 1.8v digital core v dd . e8 vdd1.8 p 1.8v digital core v dd . e9 vdd1.8 p 1.8v digital core v dd . e10 vdd1.8 p 1.8v digital core v dd . f7 vdd1.8 p 1.8v digital core v dd . f8 vdd1.8 p 1.8v digital core v dd . f9 vdd1.8 p 1.8v digital core v dd . f10 vdd1.8 p 1.8v digital core v dd . m7 vdd1.8 p 1.8v digital core v dd . m8 vdd1.8 p 1.8v digital core v dd . m9 vdd1.8 p 1.8v digital core v dd . h12 vdd1.8 p 1.8v digital core v dd . h13 vdd1.8 p 1.8v digital core v dd . j12 vdd1.8 p 1.8v digital core v dd . j13 vdd1.8 p 1.8v digital core v dd . k12 vdd1.8 p 1.8v digital core v dd . k13 vdd1.8 p 1.8v digital core v dd . n7 vdd1.8 p 1.8v digital core v dd . n8 vdd1.8 p 1.8v digital core v dd . n9 vdd1.8 p 1.8v digital core v dd . e11 vdd3.3 p 3.3v digital i/o circuitry v dd . e12 vdd3.3 p 3.3v digital i/o circuitry v dd . e13 vdd3.3 p 3.3v digital i/o circuitry v dd . f11 vdd3.3 p 3.3v digital i/o circuitry v dd . f12 vdd3.3 p 3.3v digital i/o circuitry v dd . f13 vdd3.3 p 3.3v digital i/o circuitry v dd . g12 vdd3.3 p 3.3v digital i/o circuitry v dd . g13 vdd3.3 p 3.3v digital i/o circuitry v dd . l12 vdd3.3 p 3.3v digital i/o circuitry v dd . l13 vdd3.3 p 3.3v digital i/o circuitry v dd . m10 vdd3.3 p 3.3v digital i/o circuitry v dd . m11 vdd3.3 p 3.3v digital i/o circuitry v dd . m12 vdd3.3 p 3.3v digital i/o circuitry v dd . m13 vdd3.3 p 3.3v digital i/o circuitry v dd . n10 vdd3.3 p 3.3v digital i/o circuitry v dd . n11 vdd3.3 p 3.3v digital i/o circuitry v dd . n12 vdd3.3 p 3.3v digital i/o circuitry v dd . n13 vdd3.3 p 3.3v digital i/o circuitry v dd . note : 1. p = power supply. i = input. o = output.
micrel, inc. ks8695p may 2006 13 m9999-051806 pin number pin name type (1) pin function e5 vdda1.8 p 1.8v analog v dd . e6 vdda1.8 p 1.8v analog v dd . f5 vdda1.8 p 1.8v analog v dd . f6 vdda1.8 p 1.8v analog v dd . g5 vdda1.8 p 1.8v analog v dd . g6 vdda1.8 p 1.8v analog v dd . h5 vdda1.8 p 1.8v analog v dd . h6 vdda1.8 p 1.8v analog v dd . j5 vdda1.8 p 1.8v analog v dd . j6 vdda1.8 p 1.8v analog v dd . k5 vdda3.3 p 3.3v analog v dd . k6 vdda3.3 p 3.3v analog v dd . l5 vdda3.3 p 3.3v analog v dd . l6 vdda3.3 p 3.3v analog v dd . m5 vdda3.3 p 3.3v analog v dd . m6 vdda3.3 p 3.3v analog v dd . n5 vdda3.3 p 3.3v analog v dd . n6 vdda3.3 p 3.3v analog v dd . f2 wanfxsd i wan fiber signal detect. g4 wanrxm i wan phy receive signal ? (differential). g3 wanrxp i wan phy receive signal + (differential). g2 wantxm o wan phy transmit signal ? (differential). g1 wantxp o wan phy transmit signal + (differential). e15 wled0/ b0size0 o/i wan led programmable indica tor 0. bank 0 size bit 0. e14 wled1/ b0size1 o/i wan led programmable indica tor 1. bank 0 size bit 1. u17 wrsto o watchdog timer reset output. when eroen/wrstpls = 0, active high. when eroen/wrstpls = 1, active low. e1 xclk1 i external clock in. e2 xclk2 i external clock in (negative polarity). note : 1. p = power supply. i = input. o = output. o/i = output in normal mode; input pin during reset.
micrel, inc. ks8695p may 2006 14 m9999-051806 pin configuration figure 2. ks8695p pin mapping (top view)
micrel, inc. ks8695p may 2006 15 m9999-051806 functional description introduction micrel's ks8695p, a member of the centau r line of integrated processors, is a hi gh-performance router-on-a-chip solu- tion for ethernet and 802.11 a/g/b based em bedded systems. designed for use in commu nication's routers, it integrates a pci to ahb bridge solution for interfacing with 32-bit pci, minipci, and cardbus devices. the ks8695p combines a proven third generation 5-port managed switch, an arm9 risc processor with mmu, and ve physical layer transceivers (phys) including their corresponding mac uni ts with micrel's xcelerouter technology. the ks8695p is built around the 16/32-bit arm9 risc processo r, which is a scalable, high-performance, microprocessor developed for highly integrated system-on-a-chip applications. it also offers a con gurable 8kb i-cache and 8kb d-cache that reduces memory access latency for high-performance applications. the simple, elegant, and fully static design of the ks8695p is especially suitable for cost-e ffective, power-sensitive applications. the ks8695p contains ve 10/100 phys: four are for the local area ne twork (lan) and one is for the wide area network (wan). connected to the phys are ve corresponding mac units with an in tegrated layer 2 managed switch. the combining of the switch and the analog phys make the ks8695p an extremely prudent solution for soho router applications, saving both board space and bom costs. the layer 2 switch contains a 16kx32 sram on-chip memory for frame buffering. the embedded frame buffer memory is designe d with a 1.4gbps on-chip memory bus. this allows the ks8695p to perform full non-blocking fr ame switching and/or routing on the y for many applications. for the media interface, the ks8695p su pports 10base-t and 1 00base-tx, as speci ed by the ieee 802.3 standard, and 100 base-fx on the wan port and on one lan port. the ks8695p supports two modes of operati on in the pci bus environment: host bridge mode and guest bridge mode. in the host bridge mode, the arm9 processor acts as the host of the entire system. it con gures other pci devices and coordinates their transactions, including initiating transact ions between the pci devices and ahb bus subsystem. an on- chip pci arbiter is included to determine the pci bus ow nership among pci master devices. in host bridge mode, all i/o registers, including those for the embedded switch, are con gured by the arm9 processor through the on-chip amba bus interface. in guest bridge mode, all of the i/o registers are programmed by either the external host cpu on the pci bus or the local arm9 host processor through the amba bus. the ks8695p func tions as a slave on the pci bus with the on-chip pci arbiter disabled. the ks8695px can be con gured by either the arm9 cpu or t he pci host cpu. in both cases, the ks8695p memory subsystem is accessible from either the pci host or the arm9 cpu. communications between the external host cpu and the arm9 is accomplished through message passing or through shared memory. cpu features ? 166mhz arm9 risc processor core ? on-chip amba bus 2.0 interfaces ? 16-bit thumb programming to relax memory requirement ? 8kb i-cache and 8kb d-cache ? little-endian mode supported ? con gurable memory management unit ? supports reduced cpu and system clock speed for power savings pci to ahb bridge features ? support 33mhz, 32-bit data pci bus ? integrated pci bridge support for interfacing with 32-bit minipci or cardbus devices ? independent ahb and pci clock speed ? supports 125mhz ahb speed ? supports pci revision 2.1 protocols ? supports ahb bus 2.0 interfaces ? supports both regular and memory-mapped i/o on the pci interface ? integrated pci arbiter with power-on option to enable or disable ? support round robin arbitration with three external pci devices and one internal device ? supports ahb burst transfers up to 16 data words ? con gurable pci registers by host cpu arm9 ? supports bus mastership from pci to ahb or ahb to pci bus
micrel, inc. ks8695p may 2006 16 m9999-051806 switch engine ? 5-port 10/100 integrated switch with one wan and four lan physical layer transceivers ? 16kx32 on-chip sram for frame buffering ? 1.4gbps on-chip memory bandwidt h for wire-speed frame switching ? 10mbps and 100mbps modes of operation for both full and half duplex ? supports 802.1q tag-based vlan and port-based vlan ? supports 8.2,1p-based priority, diffs erv priority, and post-based priority ? integrated address look-up engine, s upports 1k absolute mac addresses ? automatic address learning, addr ess aging, and ad dress migration ? broadcast storm protection ? full-duplex ieee 802.3x ow control ? half-duplex back pressure ow control ? supports igmp snooping ? spanning tree protocol support advanced memory controller features ? supports glueless connection to two banks of rom/sram/f lash memory with programmable 8/16/32 bit data bus and programmable access timing ? supports glueless connection to two sdram banks with programmable 8/16/32-bit data bus and programmable ras/cas latency ? supports three external i/o banks with programmable 8/16/32-bit data bus and programmable access timing ? programmable system clock speed for power management ? automatic address line mapping for 8/16/32-bit acce sses on flash, rom, sram, and sdram interfaces direct memory access (dma) engines ? independent mac dma engine with programmable burst mode for wan port ? independent mac dma engine with programmable burst mode for lan ports ? supports little-endian byte ordering for memory buffers and descriptors ? contains large independent receive and transmit fifos (3 kb receive/3kb transmit) for ba ck-to-back pack et receive, and guaranteed no under-run packet transmit ? data alignment logic and scatter gather capability protocol engine and xcelerouter? technology ? supports ipv4 ip header/tcp/udp packe t checksum generation for host cpu of oading ? supports ipv4 packet ltering based on checksum errors network interface ? features ve mac units and ve phy units ? supports 10base-t and 100base-tx on all lan ports and one wan port. also supports 100base-fx on the wan port and on one lan port ? supports automatic crc generation and checking ? supports automatic error packet discard ? supports ieee 802.3 auto- negotiation algorithm of full-duplex and half -duplex operation fo r 10mbps and 100mbps ? supports full-/half-duplex operation on phy interfaces ? fully compliant with ieee 802.3 ethernet standards ? ieee 802.3 full-duplex ow control and half-duplex backpressure collision ow control ? supports mdi/mdi-x auto-crossover
micrel, inc. ks8695p may 2006 17 m9999-051806 peripherals ? twenty-eight interrupt so urces, including four ex ternal interrupt sources ? normal or fast interrupt mode (irq, fiq) supported ? prioritized interrupt handling ? sixteen programmable general purpose i/o. pins individually con gurable to input, output, or i/o mode for dedicated signals ? two programmable 32-bit timers with watchdog timer capability ? high-speed uart interface up to 115kbps other features ? integrated pll to generate cpu and system clocks ? jtag development interface for ice connection ? 19mm x 19mm 289-pin pbga ? 1.8v cmos for core and 3.3v for i/o
micrel, inc. ks8695p may 2006 18 m9999-051806 signal description system level hardware interfaces figure 3. system level interfaces at the system level the ks8695p f eatures the following interfaces: ? clock interface for crysta l or external oscillator ? jtag development interface ? one wan ethernet physical interface ? four lan ethernet physical interfaces ? phy led drivers ? one high-speed uart interface ? sixteen gpio pins ? 33mhz, 32-bit pci interface supporting three external masters ? advanced memory interface ? programmable synchronous bus rate ? programmable asynchronous interface timing ? independently programmable data bus wi dth for static and synchronous memory ? glueless connection to sdram ? glueless connection to ash memory or rom ? factory test ? power and ground configuration pins the following pins are sampled as input during reset. configuration pin name pin # setting bank0 flash data width b0size[1:0] e14, e15 ?00?= reserved ?01? = byte wide ?10? = half word wide (16 bits) ?11? = word wide (32 bits) wrsto polarity eroen/wrstpls u17 ?0? = active high ?1? = active low cpu clock select urtsn/cpuclksel m15 ?0? = normal mode (pll) '1? = bypass internal pll pci bridge mode pbms d3 ?0? = guest bridge mode ?1? = host bridge mode cpuclksel urtsn/cpuclksel m15 ?0? = normal operation ?1? = factory reserved debug enable udtrn/dbgenn n15 ?0? = factory reserved table 1. configuration pins
micrel, inc. ks8695p may 2006 19 m9999-051806 following pins have second function as factory test of chip. configuration pin name pin # setting chip test enable testen f17 ?0? = normal operation ?1? = factory reserved. used for factory test of chip and affects all signals listed in this table. erwen0/testack m17 erwen1/testreqb n17 erwen2/testreqa p17 erwen3/tictesttenn r17 uctsn/bisten m14 udcdn/scanen l15 urin/tstrst l14 test1 m4 test2 f4 table 2. configuration pins reset the ks8695p has a single reset input that can be driven by a system reset circuit or a simple power on reset circuit. the ks8695p also features a reset output (wrsto) that can be used to reset other devices in the system. wrsto can be con gured as either an active high reset or an active low rese t through a strap-in option on pin u17, as shown in table 1. the ks8695p also has a built in watchdog timer. when t he watchdog timer is programmed and the timer setting expires, the ks8695p resets itself and also asserts wrsto to reset the other devices in the syst em. figure 4 shows a typical system using the ks8695p wrsto as the system reset. reset circuit diagram figure 4. example of a reset circuit vcc r 10k d2 c 10f d1 cpu/fpga rst_out_n ks8695p rst figure 5. recommended circuit for interfacing with cpu/fpga reset at power-on-reset, r, c,and d1 provide t he necessary ramp rise time to reset the micrel device. the reset out from cpu/fpga provides warm reset after power up.
micrel, inc. ks8695p may 2006 20 m9999-051806 system clock the clock to the ks8695p is supplied by ei ther a 25mhz 50ppm crystal or by an osc illator. if an oscillator is used, it must be connected to the xclk1 input (pin e1) on the ks8695p. if a cr ystal is used, it must be connected with a circuit similar to the one shown below. the 25mhz input clock is used by an internal pll to generate the programmable sdoclk. sdoclk is the system clock and can be programmed from 25mhz to 125mhz using the system clock and bus control register at offset 0x0004. the cpucl ksel strap-in option on pin m15 needs to be pulled low for normal operation. sdiclk is used to register the data read from the sdram back into the ks8695p. t he system designer must ensure that sdram timing is met when routing sdoclk back to sdiclk. figure 6. typical clock circuit
micrel, inc. ks8695p may 2006 21 m9999-051806 memory interface the ks8695p has a glueless interface for sdram and static memory, i.e. rom, sram, and flash. it supports up to two banks of static memory (figure 7), up to two banks of sdram (figure 8), and thr ee banks of external i/o (figure 9). the total address space for the ks8695p is 64mb. this includes sdram, static memory, exte rnal i/o, and the ks8695p's own 64kb of register space. the memory interface for the sdram and static memory has a special automatic address mapping feature. this allows the designer to connect address bit 0 on the memory to addr[0] on the ks8695p and address bit 1 on the memory to addr[1] on the memory, regardless of whet her the designer is trying to achieve word, half word, or byte addressing. the ks8695p memory controller performs the address mapping internally. this permits the designer to use the maximum amount of address bits, instead of losing one or two bits because of address mapping. fo r external i/o, however, the designer still needs to take care of the address mapping (see figure 9). figure 7. static memory interface examples
micrel, inc. ks8695p may 2006 22 m9999-051806 figure 8. sdram interface examples
micrel, inc. ks8695p may 2006 23 m9999-051806 figure 9. external i/o interface examples ks8695p outputs erwen[3:0] as wr ite strobes to byte wide, half-word wide, and word-wide memory port. the following gures show the most commonly implemented examples.
micrel, inc. ks8695p may 2006 24 m9999-051806 figure 10. erwen[3:0] interface examples
micrel, inc. ks8695p may 2006 25 m9999-051806 signal descriptions by group clock and reset pins pin name i/o type (1) description e1 xclk1/ cpuclk i external clock in. this signal is used as the source clock for the transmit clock of the internal mac and phy. the clock frequency is 25mhz 50ppm. the xclk1 signal is also used as the reference clock signal for the internal pll to generate the 125mhz internal system clock. e2 xclk2 i external clock in. used with xclk1 pin when another polarity of crystal is needed. this is unused for a normal clock input. m15 urtsn/ cpuclksel o/i normal mode: uart request to send. active low output. during reset: cpu clock select. select cpu clock source. cpuclksel=0 (normal mode), the internal pll clock output is used as the cpu clock source. cpuclksel=1 (factory reserved test signal). a17 resetn i ks8695p chip reset. active low input asserted for at least 256 system clock (40ns) cycles to reset the ks8695p. when in the reset state, all the output pins are tri- stated and all open drain signals are oating. u17 wrsto o watchdog timer reset output. this signal is asserted for at least 200ms if resetn is asserted or when the internal watchdog timer expires. t17 eroen/ wrstpls o/i normal mode: rom/sram/flash and external i/o output enable. active low. when asserted, this signal controls the output enable port of the speci ed device. during reset: watchdog timer reset polarity setting. wrstpls=0, active high; wrstpls=1, active low. no default. jtag interface pins pin name i/o type (1) description g14 tck i jtag test clock. g15 tms i jtag test mode select. f14 tdi i jtag test data in. f15 tdo o jtag test data out. f16 trstn i jtag test reset. active low. wan ethernet physical interface pins pin name i/o type (1) description g1 wantxp o wan phy transmit signal + (differential). g2 wantxm o wan phy transmit signal ? (differential). g3 wanrxp i wan phy receive signal + (differential). g4 wanrxm i wan phy receive signal ? (differential). g5 wanfxsd i wan ber signal detect. signal detect input when the wan port is operated in 100base-fx 100mb ber mode. see application note 10. note : 1. i = input. o = output. o/i = output in normal mode; input pin during reset.
micrel, inc. ks8695p may 2006 26 m9999-051806 lan ethernet physical interface pins pin name i/o type (1) description h1 j1 k1 l1 lantxp1 lantxp2 lantxp3 lantxp4 i lan port[4:1] phy transmit signal + (differential). h2 j2 k2 l2 lantxm1 lantxm2 lantxm3 lantxm4 i lan port[4:1] phy transmit signal ? (differential). h3 j3 k3 l3 lanrxp1 lanrxp2 lanrxp3 lanrxp4 o lan port[4:1] phy receive signal + (differential). h4 j4 k4 l4 lanrxm1 lanrxm2 lanrxm3 lanrxm4 o lan port[4:1] phy receive signal ? (differential). f1 iset i set phy transmit output current. connect to ground through a 3.01k ? 1% resistor. f3 lanfxsd1 i lan ber signal detect. signal detect input when the lan1 port is operated in 100base-fx 100mb ber mode. see application note 107. phy led drivers pin name i/o type (1) description e15 wled0/ b0size0 o/i normal mode: wan led indicator 0. programmable via wan misc. control register bits [2:0]. ?000? = speed; ?001? = link; ?010? = full/half duplex; ?011? = collision; ?100? = tx/rx activity; ?101? = full-duplex collision; ?110? = link/activity. during reset: bank 0 data access size. bank 0 is used for the boot program. b0size[1:0] are used to specify the size of the bank 0 data bus width as follows: ?01? = one byte, ?10? = half-word, ?11? = one word, and ?00? = reserved. e14 wled1/ b0size1 o/i normal mode: wan led indicator 1. programmable via wan misc. control register bits [6:4]. ?000? = speed; ?001?= link; ?010? = full/half duplex; ?011? = collision; ?100? = tx/rx activity; ?101? = full-duplex collision; ?110? = link/activity. during reset: bank 0 data access size. bank 0 is used for the boot program. b0size[1:0] are used to specify the size of the bank 0 data bus width as follows: ?01? = one byte, ?10? = half-word, ?11? = one word, and ?00? = reserved. b17 c17 d17 e17 l1led0 l2led0 l3led0 l4led0 o lan port[4:1] led indicator 0. programmable via switch control 0 register bits [27:25]. ?000? = speed; ?001? = link; ?010? = full/half duplex; ?011? = collision; '100? = tx/rx activity; ?101? = full-duplex collision; ?110? = link/activity. b16 c16 d16 e16 l1led1 l2led1 l3led1 l4led1 o lan port[4:1] led indicator 1. programmable via switch control 0 register bits [24:22]. ?000? = speed; ?001? = link; ?010? = full/half duplex; ?011? = collision; ?100? = tx/rx activity; ?101? = full-duplex collision; ?110? = link/activity. note : 1. i = input. o = output. o/i = output in normal mode; input pin during reset.
micrel, inc. ks8695p may 2006 27 m9999-051806 uart pins pin name i/o type (1) description n16 urxd i uart receive data. n14 utxd o uart transmit data. n15 udtrn/ dbgenn o/i uart data terminal ready. active low. dbgenn = 0 (factory reserved test signal) m16 udsrn i uart data set ready. active low. m15 urtsn/ cpuclksel o/i normal mode: uart request to send. active low output. during reset: cpu clock select. select cpu clock source. cpuclksel=0 (normal mode), the internal pll clock output is used as the cpu clock source. cpuclksel=1 (factory reserved test signal). m14 uctsn/ bisten i uart clear to send. bist enable (factory reserved test signal). l15 udcdn/ scanen i uart data carrier detect. scan enable (factory reserved test signal). l14 urin/ tstrst i uart ring indicator. chip test reset (factory reserved test signal). general purpose i/o pins pin name i/o type (1) description g17 gpio0/ eint0 i/o general purpose i/o pin. external interrupt request pin. g16 gpio1/ eint1 i/o general purpose i/o pin. external interrupt request pin. h17 gpio2/ eint2 i/o general purpose i/o pin. external interrupt request pin. h16 gpio3/ eint3 i/o general purpose i/o pin. external interrupt request pin. h15 gpio4/ tout0 i/o general purpose i/o pin. timer 0 output pin. h14 gpio5/ tout1 i/o general purpose i/o pin. timer 1 output pin. j17 gpio6 i/o general purpose i/o pin. j16 gpio7 i/o general purpose i/o pin. j15 gpio8 i/o general purpose i/o pin. j14 gpio9 i/o general purpose i/o pin. k17 gpio10 i/o general purpose i/o pin. k16 gpio11 i/o general purpose i/o pin. k15 gpio12 i/o general purpose i/o pin. k14 gpio13 i/o general purpose i/o pin. l17 gpio14 i/o general purpose i/o pin. l16 gpio15 i/o general purpose i/o pin. a3 prstn i pci reset. active low. this signal is an input used to reset the ks8695p pci logic. if the ks8695p is the host, use the resetn signal to drive this input. if the ks8695p is a guest, use the system reset to drive this signal. note : 1. i = input. o = output. i/o = bidirectional. o/i = output in normal mode; input pin during reset.
micrel, inc. ks8695p may 2006 28 m9999-051806 general purpose i/o pins (continued) pin name i/o type (1) description d4 pclk i pci bus clock.this signal provides the timing for the pci bus transactions. this signal is used to drive the pci bus interface and the internal pci logic. all pci bus signals are sampled on the rising edges of the pclk. pclk can operate from 20mhz to 33mhz. for host mode, use pclkout0 signal to drive this input. in guest mode, use the system pci clock to drive this input. c2 gnt3n o pci bus grant 3. active low. in host bridge mode, this is an output signal from the internal pci arbiter to grant pci bus access to the device connected to req3n. in guest bridge mode, this signal is reserved. c3 gnt2n o pci bus grant 2. active low. in host bridge mode, this is an output signal from the internal pci arbiter to grant pci bus access to the device connected to req2n. in guest bridge mode, this signal is reserved. c4 gnt1n o pci bus grant 1. active low. in host bridge mode, this is an output signal from the internal pci arbiter to grant pci bus access to the device connected to req1n. in guest bridge mode, this signal is an output to indicate that the ks8695p is requesting to access the pci bus as a pci master. in guest bridge mode, this is basically the ks8695p?s request output. b2 req3n i pci bus request 3. active low. in host bridge mode, this is an input signal from the external pci device to request pci bus access. in guest bridge mode, this signal is reserved. b3 req2n i pci bus request 2. active low. in host bridge mode, this is an input signal from the external pci device to request pci bus access.in guest bridge mode, this signal is reserved. b4 req1n i pci bus request 1. active low. in host bridge mode, this is an input signal from the external pci device to request pci bus access. in guest bridge mode, this is an input signal from an external pci bus arbiter granting access to the bus. in guest bridge, this is basically the ks8695p's grant input. a4 d5 b5 c5 a5 d6 b6 c6 b7 c7 a7 d8 b8 d9 a8 c9 d12 b12 c12 a12 d13 b13 c13 a13 b14 c14 a14 d15 b15 pad31 pad30 pad29 pad28 pad27 pad26 pad25 pad24 pad23 pad22 pad21 pad20 pad19 pad18 pad17 pad16 pad15 pad14 pad13 pad12 pad11 pad10 pad9 pad8 pad7 pad6 pad5 pad4 pad3 i/o 32-bit pci address and data. pci bus transactions consist of an address phase followed by one or more data phases. address and data signals are multiplexed on the same pins. for a pci write transaction, the source of the data is the ks8695p. for a pci read transaction, the data source is the target. the ks8695p supports both read and write burst transactions. in the case of a read transaction, a special data turn around cycle is needed between the address phase and the data phase(s).
micrel, inc. ks8695p may 2006 29 m9999-051806 general purpose i/o pins (continued) pin name i/o type (1) description c15 a15 a16 pad2 pad1 pad0 i/o 32-bit pci address and data (continued from previous page). a6 b9 a11 d14 cben3 cben2 cben1 cben0 i/o pci commands and byte enable. active low. the pci command and byte enable signals are multiplexed on the same pins. during the rst clock cycle of a pci transaction, the cben bus contains the command for the transaction. the pci transaction consists of the address phases and one or more data phases. during the data phases of the transaction, the bus carries the byte enable for the current data phases. c8 par i/o parity. pci bus parity is even across pad[31:0] and cben[3:0]. the ks8695p generates par during the address phase and write data phases as a bus master and during read data phases as a target. it checks for correct par during the read data phase as a bus master, during every address phase as a bus slave, and during write data phases as a target. d10 framen i/o pci bus frame signal. active low. framen is an indication of an active pci bus cycle. it is asserted at the beginning of a pci transaction, i.e. the address phase, and deasserted before the nal transfer of the data phase of the transaction. a9 irdyn i/o pci initiator ready signal. active low. this signal is asserted by a pci master to indicate a valid data phase on the pad bus during data phases of a write transaction. during a read transaction, it indicates that the master is ready to accept data from the target. a target monitors the irdyn signal when a data phase is completed on any rising edge of the pci clock when both irdyn and trdyn are asserted. wait cycles are inserted until both irdyn and trdyn are asserted together. c10 trdyn i/o pci target ready signal. active low. this signal is asserted by a pci slave to indicate a valid data phase on the pad bus during a read transaction. during a write transaction, it indicates that the slave is ready to accept data from the target. a pci initiator monitors the trdyn signal when a data phase is completed on any rising edge of the pci clock when both irdyn and trdyn are asserted. wait cycles are inserted until both irdyn and trdyn are asserted together. c11 devseln i/o pci device select signal. active low. this signal is asserted when the ks8695p is selected as a target during a bus transaction. when the ks8695p is the initiator of the current bus access, it expects the target to assert devseln within ve pci bus cycles, con rming the access. if the target does not assert devseln within the required bus cycles, the ks8695p aborts the bus cycle. to meet the timing requirement, the ks8695p asserts this signal in a medium speed decode timing. (two bus cycles). d7 idsel i initialization device select. active high. it is used as a chip select during con guration read and write transactions. d11 stopn i/o pci stop signal. active low. this signal is asserted by the pci target to indicate to the bus master that it is terminating the current transaction. the ks8695p responds to the assertion of stopn when it is the bus master, either to disconnect, retry, or abort the transaction. b11 perrn i/o pci parity error signal. active low. the ks8695p asserts perrn when it checks and detects a bus parity error. when it generates the par output, the ks8695p monitors for any reported parity error on perrn. when the ks8695p is the bus master and a parity error is detected, the ks8695p sets error bits in the control status registers. it completes the current data burst transaction, and then stops the operation. after the host clears the system error, the ks8695p continues its operation. a10 serrn o pci system error signal. active low. if an address parity error is detected, the ks8695p asserts the serrn signal two clocks after the failing address. e4 m66en i pci 66mhz enable. when asserted, this signal indicates the pci bus segment is operating at 66mhz. this pin is mainly used in guest bridge mode when the pclk is driven by an external host bridge.
micrel, inc. ks8695p may 2006 30 m9999-051806 general purpose i/o pins (continued) pin name i/o type (1) description d1 pclkout3 o pci clock output 3. in host bridge mode driven as 33mhz in guest bridge mode, this signal is reserved c1 pclkout2 o pci clock output 2. in host bridge mode driven as 33mhz in guest bridge mode, this signal is reserved b1 pclkout1 o pci clock output 1. in host bridge mode driven as 33mhz in guest bridge mode, this signal is reserved a2 pclkout0 o pci clock output 0. in host bridge mode driven as 33mhz in guest bridge mode, this signal is reserved b10 clkrunn i/o this is a cardbus only signal. the clkrunn signal is used by portable cardbus devices to request that the system turn on the bus clock. output is always active in cardbus and minipci modes. d2 mpciactn o minipci active. this signal is assert ed by the pci device to indicate that its current function requires full system performance. mpciactn is an open drain output signal. in minipci mode, this signal is always low. d3 pbms i pci bridge mode select. this selects the operating mode for the pci bridge. when pbms is high, the host bridge mode is selected and the on-chip pci bus arbiter is enabled. when pbms is low, the guest bridge mode is selected and the on-chip arbiter is disabled. advanced memory interface (sdram/rom/flash/sram/external i/o) pin name i/o type (1) description t7 sdiclk i sdram clock in: sdram clock input for the sdram memory controller interface. u7 sdoclk o system/sdram clock out: output of the internal system clock, it is also used as the clock signal for sdram interface. p4 addr21/ba1 o address bit 21/bank address input 1: address bit 21 for asynchronous accesses. bank address input bit 1 for sdram accesses. p3 addr20/ba0 o address bit 20/bank address input 0: address bit 20 for asynchronous accesses. bank address input bit 0 for sdram accesses. m3 m2 m1 n4 n3 n2 n1 p2 p1 r3 r2 r1 t2 t1 u1 u2 t3 u3 t4 u4 addr[19] addr[18] addr[17] addr[16] addr[15] addr[14] addr[13] addr[12] addr[11] addr[10] addr[9] addr[8] addr[7] addr[6] addr[5] addr[4] addr[3] addr[2] addr[1] addr[0] o address bus: the 22-bit address bus (including addr[21:20] above) covers 4m word memory space shared by rom/sram/flash, sdram, and external i/o banks. during the sdram cycles, the internal address bus is used to generate ras and cas addresses for the sdram. the number of column address bits in the sdram banks can be programmed from 8 to 11 bits via the sdram control registers. addr[12:0] are the sdram address and addr[21:20] are the sdram bank address. during other cycles, the addr[21:0] is the byte address of the data transfer. for sdram and flash/rom/sram, connect all address lines, i.e. a0 to a0, a1 to a1, etc. the memory controller automatically handles address line adjustments for the 8/16/32 bit accesses. for external i/o devices, the user needs to connect address lines for 8/16/32 bit accesses. note : 1. i = input. o = output. i/o = bidirectional.
micrel, inc. ks8695p may 2006 31 m9999-051806 advanced memory interface (sdram/rom /flash/sram/externa l i/o) (continued) pin name i/o type (1) description p7 r7 p8 r8 t8 u8 p9 r9 t9 u9 p10 r10 t10 u10 p11 r11 t11 u11 p12 r12 t12 u12 p13 r13 t13 u13 p14 r14 t14 u14 t15 u15 data[31] data[30] data[29] data[28] data[27] data[26] data[25] data[24] data[23] data[22] data[21] data[20] data[19] data[18] data[17] data[16] data[15] data[14] data[13] data[12] data[11] data[10] data[9] data[8] data[7] data[6] data[5] data[4] data[3] data[2] data[1] data[0] i/o external data bus. 32-bit bi-directional data bus for data transfer. the ks8695p also supports 8-bit and 16-bit data bus widths. r4 p5 sdcsn[1] sdcsn[0] o sdram chip select: active low chip select pins for sdram. the ks8695p supports up to two sdram banks. one sdcsn output is provided for each bank. r5 sdrasn o sdram row address strobe: active low. the row address strobe pin for sdram. t5 sdcasn o sdram column address strobe: active low. the column address strobe pin for sdram. u5 sdwen o sdram write enable: active low. the write enable signal for sdram. p6 r6 t6 u6 sdqm[3] sdqm[2] sdqm[1] sdqm[0] o sdram data input/output mask: data input/output mask signals for sdram. the sdqm is sampled high and is an output mask signal for write accesses and an output enable signal for read accesses. input data are masked during a write cycle. the sdqm0/1/2/3 correspond to data[7:0], data[15:8], data[23:16] and data[31:24], respectively. u16 t16 r16 ecsn[2] ecsn[1] ecsn[0] o external i/o device chip select: active low. three external i/o banks are provided for external memory mapped i/o operations. each i/o bank stores up to 16kb. the ecsnx signals indicate which of the three i/o banks is selected. p16 ewaitn i external wait: active low. this signal is asserted when an external i/o device or a rom/sram/flash bank needs more access cycles than those de ned in the corresponding control register. r15 p15 rcsn[1] rcsn[0] o rom/sram/flash chip select: active low. the ks8695p can access up to two external rom/sram/flash memory banks. the rcsn pins can be controlled to map the cpu addresses into physical memory banks. note : 1. i = input. o = output. i/o = bidirectional.
micrel, inc. ks8695p may 2006 32 m9999-051806 advanced memory interface (sdram/rom /flash/sram/externa l i/o) (continued) pin name i/o type (1) description t17 eroen/ wrstpls o/i normal mode: external i/o and rom/sram/flash output enable: active low. when asserted, this signal controls the output enable port of the speci ed memory device. during reset: watchdog timer reset polarity setting. wrstpls=0, active low; wrstpls = 1, active high. no default. m17 erwen0/ testack o external i/o and rom/sram/flash write byte enable: active low. when asserted, the erwenx controls the byte write enable of the memory device (except sdram). arm cpu test signal (factory reserved test signal). n17 erwen1/ testreqb o external i/o and rom/sram/flash write byte enable: active low. when asserted, the erwenx controls the byte write enable of the memory device (except sdram). arm cpu test signal (factory reserved test signal). p17 erwen2/ testreqa o external i/o and rom/sram/flash write byte enable: active low. when asserted, the erwenx controls the byte write enable of the memory device except sdram). arm cpu test signal (factory reserved test signal). r17 erwen3/ tictestenn o external i/o and rom/sram/flash write byte enable. active low. when asserted, the erwenx controls the byte write enable of the memory device (except sdram). arm cpu test signal (factory reserved test signal). e15 wled0/ b0size0 o/i normal mode: wan led indicator 0: programmable via wan misc. control register bits [2:0]. 000 = speed; 001 = link; 010 = full/half duplex; 011 = collision; 100 = tx/rx activity; 101 = full-duplex collision; 110 = link/activity. during reset: bank 0 data access size. bank 0 is used for the boot program. b0size[1:0] are used to specify the size of the bank 0 data bus width as follows: ?01? = one byte, ?10? = half-word, ?11? = one word, and ?00? = reserved. e14 wled1/ b0size1 o/i normal mode: wan led indicator 1: programmable via wan misc. control register bits [6:4]. 000 = speed; 001 = link; 010 = full/half duplex; 011 = collision; 100 = tx/rx activity; 101 = full-duplex collision; 110 = link/activity. during reset: bank 0 data access size. bank 0 is used for the boot program. b0size[1:0] are used to specify the size of the bank 0 data bus width as follows: ?01? = one byte, ?10? = half-word, ?11? = one word, and ?00? = reserved. factory test pins pin name i/o type (1) description f7 testen i factory test signal. pull-down or direct connect to gnd required. m4 test1 i factory test signal. no connect for normal operation. f4 test2 i factory test signal. no connect for normal operation. note : 1. i = input. o = output. o/i = output in normal mode; input pin during reset.
micrel, inc. ks8695p may 2006 33 m9999-051806 power and ground pins pin name i/o type (1) description e5 e6 f5 f6 g5 g6 h5 h6 j5 j6 vdda1.8 p 1.8v analog v dd . e7 e8 e9 e10 f7 f8 f9 f10 m7 m8 m9 h12 h13 j12 j13 k12 k13 n7 n8 n9 vdd1.8 p 1.8v digital core v dd . k5 k6 l5 l6 m5 m6 n5 n6 vdda3.3 p 3.3v analog v dd . e11 e12 e13 f11 f12 f13 g12 g13 l12 l13 m10 m11 m12 m13 n10 n11 n12 n13 vdd3.3 p 3.3v digital i/o v dd . note : 1. p = power supply.
micrel, inc. ks8695p may 2006 34 m9999-051806 power and ground pins (continued) pin name i/o type (1) description e3 h7 j7 k7 l7 agnd gnd analog ground. a1 g7 g8 g9 g10 g11 h8 h9 h10 h11 j8 j9 j10 j11 k8 k9 k10 k11 l8 l9 l10 l11 gnd gnd ground. note : 1. gnd = ground.
micrel, inc. ks8695p may 2006 35 m9999-051806 address map and re gister description memory map upon power up, the ks8695p memory map is con gured as shown below. address range region description 0x03ff0000-0x03ffffff 64kb ks8695p system con guration register space 0x02000000-0x03feffff 32mb not con gured 0x00000000-0x01ffffff 32mb flash bank 0 memory map example the default base address fo r the ks8695p system con guration registers is 0x03ff0000. a fter power up, the user is free to remap the memory for their speci c application. the following is an ex ample of the memory space remapped for operation. address range region description 0x03ff0000-0x03ffffff 64kb ks8695p system con guration register space 0x03e00000-0x03feffff 2mb disabled, not used 0x03200000-0x036fffff 5mb space (external i/o) 0x02c00000-0x031fffff 6mb reserved flash space, not used 0x02800000-0x02bfffff 4mb flash 0x02000000-0x027fffff 8mb disabled, not used 0x00000000-0x01ffffff 32mb sdram register description the ks8695p system con guration registers (scrs) are located in a bloc k of 64kb in the host memory address space. after power up and initialization, the user can remap the scrs to a desired offset. the scrs are 32 bits wide. they are 32 bit word-aligned and must be accessed using word instructions. the ahb-pci bridge con guration registers are also included in the scrs. a subset of the ahb-pci bridge con guration registers is also accessible to an exte rnal pci host when the ks8695p is con gured in pci guest mode. refer to the detailed register description document for additional information, including bit de nitions. if you don?t have this document, contact your local micrel field appl ication engineer or salesperson. address range register type register type address range 0x0000 ? 0x0004 system registers system con guration 0x03ffffff ? 0x03feffff 0x2000 ? 0x2224 pci-ahb bridge con guration external i/o bank 2 0x03feffff ? 0x039fffff 0x4000 ? 0x4040 memory controller interface external i/o bank 1 0x039fffff ? 0x035fffff 0x6000 ? 0x60fc wan dma external i/o bank 0 0x035fffff ? 0x031fffff 0x8000 ? 0x80fc lan dma not used 0x031fffff ? 0x02ffffff 0xa000 ? 0xa0fc reserved flash bank 0 ? 4mb 0x02ffffff ? 0x027fffff 0xe000 ? 0xa0fc uart registers not used 0x027fffff ? 0x00ffffff 0xe200 ? 0xe234 interrupt controller sdram 16mb 0x00ffffff ? 0x00000000 0xe400 ? 0xe410 timer registers 0xe600 ? 0xe608 general purpose i/o 0xe800 ? 0xe850 switch engine con guration 0xea00 ? 0xea18 miscellaneous registers
micrel, inc. ks8695p may 2006 36 m9999-051806 absolute maximum ratings (1) supply voltage (v dda1.8 ,v dd1.8 )........................................ ?0.5v to +2.4v (v dda3.3 ,v dd3.3 )........................................ ?0.5v to +4.0v input voltage (all input s) .............................. ?0.5v to +4.0v output voltage (all outpu ts) ......................... ?0.5v to +4.0v lead temperature (solde ring, 10sec .) ....................... 270c pb (lead) free temperatur e (soldering, 10sec.)....... 260c storage temperature (t s ) .........................?55c to +150c operating ratings (2) supply voltage (v dda1.8 ,v dd1.8 )........................................ +1.7v to +1.9v (v dda3.3 ,v dd3.3 ) (3) ..................................... +3.0v to +3.6v ambient temperature (t a ) ............................ ?0c to +70c junction temperature (t j ) ......................................... 150c package thermal resistance (4) pbga ( ja ) no air fl ow ................................29.86c/w 1m/s ..........................................21.86c/w 2m/s ..........................................21.54c/w ( jc ) no air fl ow..................................8.34c/w electrical characteristics (5) symbol parameter condition min typ max units total supply current (including tx output driver current) 100base-tx operation: all ports 100% utilization, sdoclk = 125mhz i tx 100base-tx (analog tx) v dda3.3 = +3.3v 0.032 a i rx 100base-tx (analog rx) v dda1.8 = +1.8v 0.072 a i ddio 100base-t (digital i/o) v dd3.3 = +3.3v 0.033 a i ddc 100base-t (digital core) v dd1.8 = +1.8v 0.235 a 10base-tx operation: all ports 100% utilization, sdoclk = 125mhz i tx 10base-tx (analog tx) v dda3.3 = +3.3v 0.030 a i rx 10base-tx (analog rx) v dda1.8 = +1.8v 0.072 a i ddio 10base-t (digital i/o) v dd3.3 = +3.3v 0.025 a i ddc 10base-t (digital core) v dd1.8 = +1.8v 0.234 a auto-negotiation mode: sdoclk = 125mhz i tx 10base-tx (analog tx) v dda3.3 = +3.3v 0.032 a i rx 10base-tx (analog rx) v dda1.8 = +1.8v 0.07 a i ddio 10base-t (digital i/o) v dd3.3 = +3.3v 0.021 a i ddc 10base-t (digital core) v dd1.8 = +1.8v 0.233 a ttl inputs (pci, led, memory interface, uart) v ih input high voltage 2.0 v v il input low voltage 0.8 v i in input current (excluding pull-up/pull-down) v in = gnd ~ v dd3.3 ?10 10 a ttl outputs (pci, led, memory interface, uart) v oh output high voltage i oh = ?8ma; v dd3.3 2.4 v v ol output low voltage i ol = 8ma 0.7 v i oz output tri-state leakage 10 a
micrel, inc. ks8695p may 2006 37 m9999-051806 symbol parameter condition min typ max units 100base-tx transmit (measured differentially after 1:1 transformer) v o peak differential output voltage 100 ? termination on the differ ential output 0.95 1.05 v v imb output voltage imbalance 100 ? termination on the differential output 2 % rise/fall time rise/fall time imbalance 3 0 5 0.5 ns ns duty cycle distortion 0.5 ns t r , t t overshoot 5 % reference voltage of iset 0.5 v v set output jitters peak-to-peak 0.7 1.4 ns 10base-t receive v sq squelch threshold 5mhz square wave 400 mv 10base-t transmit (measured differentially after 1:1 transformer) peak differential output voltage 100 ? termination on the diffe rential output 2.3 v jitters added 100 ? termination on the differential output 3.5 ns v p rise/fall time 28 30 ns notes: 1. exceeding the absolute maximum rating may damage the device. 2. the device is not guaranteed to function outside its operating rating. unused inputs must always be tied to an appropriate logic voltage level (ground to v dd ). 3. v dda or v dd can operate from either a 2.5v or 3.3v supply. 4. no heat spreader in package. 5. specification for packaged product only.
micrel, inc. ks8695p may 2006 38 m9999-051806 timing diagrams for pci timing, please refer to the pci speci cation, version 2.1. trc tch tcs tsr suppl y voltages resetn strap-in strap-in pin output figure 11. reset timing symbol parameter min typ max units t sr stable supply voltages to reset high 10 ms t cs con guration set-up time 50 ns t ch con guration hold time 50 ns t rc reset to strap-in pin output 50 ns table 2. reset timing parameters
micrel, inc. ks8695p may 2006 39 m9999-051806 figure 12. static memory read cycle figure 13. static memory write cycle symbol parameter (1) registers rbitacc programmable bank i access time 0x4010 rbitpa programmable bank i page access time 0x4014 table 3. programmable static memory timing parameters note: 1. "i" refers to chip select parameters 0 and 1.
micrel, inc. ks8695p may 2006 40 m9999-051806 figure 14. external i/o read and write cycles symbol parameter min (1) typ (1) max (1) units t cta valid address to cs setup time ebitacs +0.8 ebitacs +1.1 ebitacs +1.3 ns t cos oe valid to cs setup time ebitcos +0.6 ebitcos +0.6 ebitcos +1.0 ns t dsu valid read data to oe setup time 2.0 ns t cws we valid to cs setup time ebitcos +0.6 ebitcos +0.6 ebitcos +1.0 ns t dh write data to cs hold time 0 ns t cah address to cs hold time ebitcoh +1.0 ebitcoh +1.0 ebitcoh +1.4 ns t oew oe/we pulsewidth ebitact ebitact ns t ocs , t csw rising edge cs to oe/we hold time 0 ns table 4. external i/o memory timing parameters note: 1. measurements for minimum were taken at 0c, typical at 25c, and maximum at 100c. symbol parameter (1) registers ebitacs programmable bank i address setup time before chip select 0x4000, 0x4004, 0x4008 ebitact programmable bank i write enable/output enable access time 0x4000, 0x4004, 0x4008 ebitcos programmable bank i chip select setup time before oen 0x4000, 0x4004, 0x4008 ebitcoh programmable bank i chip select hold time 0x4000, 0x4004, 0x4008 table 5. programmable external i/o timing parameters note: 1. "i" refers to chip select parameters 0, 1, or 2.
micrel, inc. ks8695p may 2006 41 m9999-051806 figure 15. dram read timing figure 16. sdram write timing symbol parameter (1) registers sdtrc programmable sdram ras to cas latency 0x4038 sdcas programmable sdram cas latency 0x4038 table 6. sdram timing parameters note: 1. "i" refers to chip select parameters 0 and 1.
micrel, inc. ks8695p may 2006 42 m9999-051806 package information 289-pin pbga micrel, inc. 2180 fortune drive san jose, ca 95131 usa tel +1 (408) 944-0800 fax +1 (408) 474-1000 web http:/www.micrel.com the information furnished by micrel in this data sheet is belie ved to be accurate and reliable. however, no responsibility is a ssumed by micrel for its use. micrel reserves the right to change circuitry and specifications at any time without notification to the customer. micrel products are not designed or authori zed for use as components in life support app liances, devices or systems where malfu nction of a product can reasonably be expected to result in personal injury. life suppo rt devices or systems are devices or systems that (a) are in tended for surgical implant into the body or (b) support or sustain life, and whose failure to perform can be reasonably expected to result in a significan t injury to the user. a purchaser?s use or sale of micrel produc ts for use in life support app liances, devices or systems is a purchaser?s own risk and purchaser agrees to fully indemnify micrel for any damages resulting from such use or sale. ? 2003 micrel, incorporated.

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