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winbond clock generator w83195br-118/W83195BG-118 for intel 915/945 chipsets date: may/02/2006 revision: 0.81
w83195br-118/W83195BG-118 stepless for intel 915/945 chipsets publication release date: may 2006 - i - revision 0.81 w83195br-118 datasheet revision history pages dates version web version main contents 1 n.a. 07/22/2004 0.5 n.a. all of the versions before 0.50 are for internal use. 2 8,13 11/24/2004 0.6 n.a. correcti on ic version, add register default value and correction some description and default value 3 11,13 01/05/2005 0.7 n.a add spread spectrum function control bit, and correction some description and default value 4 19 01/17/2005 0.71 n.a add pb-free part number 5 1-4,10- 12,14-16 3/25/2005 0.8 n.a refine the description and register value 6 all 05/02/2006 0.81 n.a. change the part no from w83195br- 119 to w83195br-118 7 8 9
w83195br-118/W83195BG-118 stepless for intel 915/945 chipsets - ii - tables of contents- 1. general des cription......................................................................................................... 1 2. product f eatures.............................................................................................................. 1 3. pin config uration .............................................................................................................. 2 4. block diagram.................................................................................................................. .... 3 5. pin descri ption ................................................................................................................ .... 3 5.1 crystal i/o .................................................................................................................... .................4 5.2 cpu and pcie, pci, clock outputs ............................................................................................4 5.3 fixed frequency outputs ........................................................................................................ .....4 5.4 i 2 c control interface ............................................................................................................ .........5 5.5 power management pins .......................................................................................................... ...5 5.6 power pins ..................................................................................................................... ...............6 6. frequency selection by ha rdware or so ftware................................................ 7 7. i 2 c control and stat us registers .............................................................................. 8 7.1 register 0: frequency sele ct register (default = 10h)...............................................................8 7.2 register 1: cpu clock control (1 = enable , 0 = stopped) (default: e2h) .................................8 7.3 register 2: pci clock control (1 = enable , 0 = stopped) (default: ffh) ...................................9 7.4 register 3: pci clock control (1 = enable , 0 = stopped) (default: ffh) ...................................9 7.5 register 4: 24_48mhz, 48mhz, dot, ref control (1 = enable, 0 = stopped) (default: ffh) 9 7.6 register 5: watchdog control (default: 02h).............................................................................10 7.7 register 6: src, pcie control (1 = enable , 0 = stopped) (default: feh)...............................10 7.8 register 7: winbond chip id (default: 22h) (read only) .........................................................11 7.9 register 8: m/n program (default: 90h) ....................................................................................11 7.10 register 9: m/n program register (def ault: bbh).....................................................................11 7.11 register 10: reserved (default: 3bh) ........................................................................................12 7.12 register 11: spread spectrum programming (default: 0eh)....................................................12 7.13 register 12: divisor control (defaul t: 08h) ................................................................................12 7.14 register 13: step-less enable control (default: 0ah) ...............................................................13 7.15 register 14: control (default: 10h) ............................................................................................ 14 7.16 register 15: sst control (default: ech) ...................................................................................14 7.17 register 16: skew control (default: e4h)..................................................................................15 7.18 register 17: slew rate control (default: 00h) ............................................................................15 7.19 register 18: reserved (default: 0 0h) ........................................................................................15 7.20 register 19: skew control (default: dah) .................................................................................15 7.21 register 20: watch dog timer (default: 88h) .............................................................................16
w83195br-118/W83195BG-118 stepless for intel 915/945 chipsets publication release date: may 2006 - iii - revision 0.81 7.22 register 21: asynchronous control (de fault: 4bh) ...................................................................16 8. access inte rface ............................................................................................................. 17 8.1 block write protocol........................................................................................................... .........17 8.2 block read protocol............................................................................................................ ........17 8.3 byte write protocol............................................................................................................ ..........17 8.4 byte read protocol ............................................................................................................. ........17 9. specificat ions................................................................................................................. ... 18 9.1 absolute maximum ratings............................................................................................18 9.2 general operating characteristics.............................................................................................1 8 9.3 skew group timing clock ........................................................................................................ ....19 9.4 cpu 0.7v electrical characteristics...........................................................................................1 9 9.5 src 0.7v electrical characteristics...........................................................................................1 9 9.6 pcie 0.7v electrical characteristics ..........................................................................................2 0 9.7 pci electrical characteristics ................................................................................................. ....20 9.8 24m, 48m electrical characteristics...........................................................................................2 0 9.9 ref electrical characteristics................................................................................................. ...21 9.10 dot 0.7v electrical characteristics...........................................................................................2 1 10. ordering info rmation .................................................................................................... 22 11. how to read the top marking ..................................................................................... 22 12. package drawing an d dimens ions ............................................................................. 23
w83195br-118/W83195BG-118 stepless for intel 915/945 chipsets publication release date: may 2006 - 1 - revision 0.81 1. general description the w83195br-118 is a clock synthesizer for intel p4 processors and intel grandsdale chipsets. w83195br-118 provides all clocks required for high-speed microprocessor and provides step-less frequency programming, 32 differ ent frequencies of cpu, pci, pci-express clocks setting. simultaneously w83195br-118 suppo rts src 100mhz for sata and dot 96mhz clock outputs for integrated graphic chipsets. all clocks are exte rnally selectable with smooth transitions. the w83195br-118 programs the registers to enable or disable each clock outputs through i 2 c serial bus interface and provides -0.5% down type spread spectrum or programmable spread spectrum scale to reduce emi. the w83195br-118 also has watchdog timer and reset output pin to support auto-reset when systems hanging caused by improper frequency setting. the w83195br-118 is driven with a 14.318 mhz re ference crystal and runs on a 3.3v supply. 2. product features ? 2 pair 0.7 v current mode di fferential clock outputs for cpu ? 1 pair 0.7v current mode different ial 100 mhz clock outputs for src. ? 1 pair 0.7v current mode different ial 96mhz clock outputs for dot. ? 5 pair 0.7v current mode different ial clock outputs for pci-express ? 6 pci clock outputs for pci ? 3 pci clock free running outputs for pci ? 1 24_48mhz clock output for super i/o. ? 1 48 mhz clock output for usb. ? 2 14.318mhz ref clock outputs. ? step-less frequency programming ? i 2 c 2-wire serial interface and support byte read/write and block read/write. ? -0.5% down type spread spectrum in h/w and software select mode ? programmable spread spectrum scale to reduce emi in m/n mode ? programmable registers to enable/stop each output. ? programmable clock outputs to control slew rate and skew. ? watch dog timer and reset# output pins ? 56 pin ssop package
w83195br-118/W83195BG-118 stepless for intel 915/945 chipsets - 2 - 3. pin configuration 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 gnd pci3 pci4 pci5 gnd vddp pci_f0 & fs0/pci_f1 * fs1/pci_f2 vdd48 & sel24_48#/24_48mhz 48mhz gnd dott dotc vtt_pwrgd#/pd pciet0 pciec0 vddpe gnd pciet1 pciec1 pciet2 pciec2 gnd srct srcc vdds vddp pci2 pci1 pci0 reset# ref0/ & fs2 ref1 gnd xin xout vddr *sclk *sdata cput0 cpuc0 vddc cput1 cpuc1 gnd iref gnda vdda vddpe pciet4 pciec4 pciet3 pciec3 gnd #: active low *: internal pull up resistor 120k to vdd &: internal pull-down resistor 120k to gnd
w83195br-118/W83195BG-118 stepless for intel 915/945 chipsets publication release date: may 2006 - 3 - revision 0.81 4. block diagram pll2 xtal osc pll1 spread spectrum m/n/ratio rom latch &por control logic &config register i2c in terface divider vcoclk 48m hz ref 0:1 cput 0:1 cpuc 0:1 pci_f 0:2 pci 0:5 reset# 475 xin xout fs(0:2) & sel24_48# *sdata *sclk 6 divider 24_48mhz 2 2 iref 3 5 pd 5 srct srcc vtt_pwrgd# dott dotc pciet 0:4 pciec 0:4 2 5. pin description buffer type symbol description in input in tp120k latched input at power up, internal 120k ? pull up. in td120k latched input at power up, internal 120k ? pull down. out output od open drain i/od bi-directional pin, open drain. # active low * internal 120k ? pull-up & internal 120 k ? pull-down
w83195br-118/W83195BG-118 stepless for intel 915/945 chipsets - 4 - 5.1 crystal i/o pin pin name type description 48 xin in crystal input with internal loading capacitors (18pf) and feedback resistors. 47 xout out crystal output at 14.318mhz nominally with internal loading capacitors (18pf). 5.2 cpu and pcie, pci, clock outputs pin pin name type description 43,42,40,39 cput [0:1] cpuc [0:1] out low skew (< 125ps) 0.7v current mode differential clock outputs for host frequencies of cpu 17,18,21,22 ,23,24,31,3 0,33,32 pciet [0:4] pciec [0:4] out low skew (<125ps) 0.7v cu rrent mode differential clock outputs for pci-express 7 pci_f0 out 3.3v free running pci clock output. pci_f1 out 3.3v free running pci clock output. 8 & fs0 in td120k latched input for fs0 at initial power up for h/w selecting the output frequency. latched voltage level refers to vil_fs and vih_fs voltage level. this is internal 120k pull down. pci_f2 out 3.3v free running pci clock output. 9 * fs1 in tp120k latched input for fs1 at initial power up for h/w selecting the output frequency. latched voltage level refers to vil_fs and vih_fs voltage level. this is internal 120k pull up. 53,54,55,2, 3,4 pci [0:5] out low skew (< 500ps) 3.3v pci clock outputs 5.3 fixed frequency outputs pin pin name type description ref0 out 3.3v ref 14.318mhz clock output. 51 & fs2 in td120k latched input for fs2 at initial power up for h/w selecting the output frequency, latched voltage level refers to vil_fs and vih_fs voltage level. this is internal 120k pull down. 50 ref1 out 3.3v ref 14.318mhz clock output. 24_48mhz out 24mhz or 48mhz (default) clock output, in power on reset period, it is a hardware-latc hed pin, and it can be r/w by i2c control after power on reset period. select by register 5 bit 7. 11 & sel24_48# in td120k latched input for 24mhz or 48mhz select pin. this is internal 120k pull down default 48mhz. in power on reset period, it is a hardware-latc hed pin, and it can be r/w by i2c control after power on reset period. select by register 5 bit 7.
w83195br-118/W83195BG-118 stepless for intel 915/945 chipsets publication release date: may 2006 - 5 - revision 0.81 fixed frequency outputs, continued. pin pin name type description 12 48mhz out 48mhz clock output for usb. 26,27 srct srcc out 0.7v current mode 100mhz differential clock outputs for s- ata 14,15 dott/c out 0.7v current mode 96 mhz differential clock outputs for dot 5.4 i 2 c control interface pin pin name type description 44 *sdata i/od serial data of i 2 c 2-wire control interface with internal pull- up resistor. 45 *sclk in serial clock of i 2 c 2-wire control interface with internal pull- up resistor. 5.5 power management pins pin pin name type description 37 iref out deciding the reference current for the differential pairs. the pin was connected to the precision resistor tied to ground to decide the appropriate current; 475 ohm is the standard value. 52 reset# od system reset signal when the watchdog is time out. this pin will generate 250ms low phase when the watchdog timer is timeout. vtt_pwrgd# in power good is a low active input signal used to determine when fs [2:0] are valid to be sample. 16 pd in td120k power down function. this is power down pin, high active (pd). internal 120k pull down
w83195br-118/W83195BG-118 stepless for intel 915/945 chipsets - 6 - 5.6 power pins pin pin name type description 35 vdda pwr 3.3v power supply for pll core. 6,56 vddp pwr 3.3v power supply for pci. 19,34 vddpe pwr 3.3v power supply for pci express pair. 28 vdds pwr 3.3v power supply for src pair. 10 vdd48 pwr 3.3v power supply for 48mhz. 41 vddc pwr 3.3v power supply for cpu. 46 vddr pwr 3.3v power supply for ref. 36 gnda pwr ground pin for pll core. 1,5,13,20,25,29, 38,49 gnd pwr ground pin
w83195br-118/W83195BG-118 stepless for intel 915/945 chipsets publication release date: may 2006 - 7 - revision 0.81 6. frequency selection by hardware or software this frequency table is used at power on latched fs [2:0] value or software programming at ssel [4:0] (register 0 bit 7 ~ 3). fs4 fs3 fs2 fs1 fs0 cpu (mhz) pcie (mhz) src (mhz) pci (mhz) 0 0 0 0 0 266.66 100.00 100.00 33.33 0 0 0 0 1 133.33 100.00 100.00 33.33 0 0 0 1 0 200.00 100.00 100.00 33.33 0 0 0 1 1 166.66 111.11 100.00 33.33 0 0 1 0 0 333.33 111.11 100.00 33.33 0 0 1 0 1 100.00 100.00 100.00 33.33 0 0 1 1 0 400.00 100.00 100.00 33.33 0 0 1 1 1 200.00 100.00 100.00 33.33 0 1 0 0 0 266.66 133.33 100.00 33.33 0 1 0 0 1 133.33 133.33 100.00 33.33 0 1 0 1 0 200.00 133.33 100.00 33.33 0 1 0 1 1 166.66 111.11 100.00 33.33 0 1 1 0 0 333.33 111.11 100.00 33.33 0 1 1 0 1 100.00 133.33 100.00 33.33 0 1 1 1 0 400.00 133.33 100.00 33.33 0 1 1 1 1 200.00 100.00 100.00 33.33 1 0 0 0 0 269.33 101.00 100.00 33.67 1 0 0 0 1 134.66 101.00 100.00 33.67 1 0 0 1 0 202.00 101.00 100.00 33.67 1 0 0 1 1 168.33 112.22 100.00 33.67 1 0 1 0 0 274.66 103.00 100.00 34.33 1 0 1 0 1 137.33 103.00 100.00 34.33 1 0 1 1 0 206.00 103.00 100.00 34.33 1 0 1 1 1 171.66 114.44 100.00 34.33 1 1 0 0 0 279.99 105.00 100.00 35.00 1 1 0 0 1 140.00 105.00 100.00 35.00 1 1 0 1 0 210.00 105.00 100.00 35.00 1 1 0 1 1 174.99 116.66 100.00 35.00 1 1 1 0 0 287.99 108.00 100.00 36.00 1 1 1 0 1 144.00 108.00 100.00 36.00 1 1 1 1 0 216.00 108.00 100.00 36.00 1 1 1 1 1 179.99 120.00 100.00 36.00
w83195br-118/W83195BG-118 stepless for intel 915/945 chipsets - 8 - 7. i 2 c control and status registers 7.1 register 0: frequency select register (default = 10h) bit name pwd description type 7 ssel [4] 0 6 ssel [3] 0 5 ssel [2] 0 4 ssel [1] 1 3 ssel [0] 0 frequency selection by software via i 2 c r/w 2 en_ssel 0 enable software freque ncy table selection ssel [4:0]. 0 = select frequency by hardware. 1= select frequency by software i 2 c - bit 7~ 3. r/w 1 spspen 0 enable spread spectrum 0 = normal 1 = spread spectrum enabled r/w 0 en_safe_freq 0 enable reload safe frequency when the watchdog is timeout. 0 = reload the fs [2:0] latched pins when watchdog time out. 1 = reload the safe frequency bit defined at register 5 bit 4~0. r/w 7.2 register 1: cpu clock control (1 = enable, 0 = stopped) (default: e2h) bit pin no pwd description type 7 reserve 1 reserved r/w 6 40,39 1 cput1 / c1 output control r/w 5 43,42 1 cput0 / c0 output control r/w 4 reserved 0 reserved (read only) r 3 reserved 0 reserved (read only) r 2 - x power on latched value of fs2 pin, default: 0 (read only). r 1 - x power on latched value of fs1 pin, default: 1 (read only). r 0 - x power on latched value of fs0 pin, default: 0 (read only). r
w83195br-118/W83195BG-118 stepless for intel 915/945 chipsets publication release date: may 2006 - 9 - revision 0.81 7.3 register 2: pci clock control (1 = enable, 0 = stopped) (default: ffh) bit pin no pwd description type 7 9 1 pci_f2 output control r/w 6 8 1 pci_f1 output control r/w 5 7 1 pci_f0 output control r/w 4 reserved 1 reserved r/w 3 reserved 1 reserved r/w 2 4 1 pci5 output control r/w 1 2,3 1 pci3, pci4 output control r/w 0 reserved 1 reserved r/w 7.4 register 3: pci clock control (1 = enable, 0 = stopped) (default: ffh) bit pin no pwd description type 7 54,55 1 pci1, pci2 output control r/w 6 reserved 1 reserved r/w 5 53 1 pci0 output control r/w 4 reserved 1 reserved r/w 3 reserved 1 reserved r/w 2 reserved 1 reserved r/w 1 reserved 1 reserved r/w 0 reserved 1 reserved r/w 7.5 register 4: 24_48mhz, 48mhz, dot, ref control (1 = enable, 0 = stopped) (default: ffh) bit pin no pwd description type 7 11 1 24_48mhz output control r/w 6 14,15 1 dot_t/c output control r/w 5 12 1 48mhz output control r/w 4 reserved 1 reserved r/w 3 reserved 1 reserved r/w 2 50,51 1 ref1, ref0 output control r/w 1 reserved 1 reserved r/w 0 reserved 1 reserved r/w
w83195br-118/W83195BG-118 stepless for intel 915/945 chipsets - 10 - 7.6 register 5: watchdog control (default: 02h) bit name pwd description type 7 sel24_48 x 24_ 48 mhz output selection, 1: 24 mhz, 0: 48 mhz (default). default value follow hardware trapping data on sel24_48# pin. r/w 6 en_wd 0 program this bit => 1: enable watchdog timer feature. 0: disable watchdog timer feature. read-back this bit => during timer count down the bit read back to 1. if count to zero, this bit read back to 0. r/w 5 wd_timeout 0 read back only. timeout flag. this bit is read only. 1: watchdog has ever started and counts to zero. 0: watchdog is restarted and counting. r 4 saf_freq [4] 0 r/w 3 saf_freq [3] 0 2 saf_freq [2] 0 1 saf_freq [1] 1 0 saf_freq [0] 0 these bits will be reloaded in reg-0 to select frequency table. as the watchdog is timeout and en_safe_freq=1. 7.7 register 6: src, pcie control (1 = enable, 0 = stopped) (default: feh) bit name pwd description type 7 26,27 1 srct/c output control r/w 6 reserved 1 reserved r/w 5 33,32 1 pciet4/c4 output control r/w 4 31,30 1 pciet3/c3 output control r/w 3 23,24 1 pciet2/c2 output control r/w 2 21,22 1 pciet1/c1 output control r/w 1 17,18 1 pciet0/c0 output control r/w 0 reserved 0 reserved r/w
w83195br-118/W83195BG-118 stepless for intel 915/945 chipsets publication release date: may 2006 - 11 - revision 0.81 7.8 register 7: winbond chip id (default: 22h) (read only) bit name pwd description type 7 chpi_id [7] 0 winbond chip id. w83195br-118 r 6 chpi_id [6] 0 winbond chip id. r 5 chpi_id [5] 1 winbond chip id. r 4 chpi_id [4] 0 winbond chip id. r 3 chpi_id [3] 0 winbond chip id. r 2 chpi_id [2] 0 winbond chip id. r 1 chpi_id [1] 1 winbond chip id. r 0 chpi_id [0] 0 winbond chip id. r 7.9 register 8: m/n program (default: 90h) bit name pwd description type 7 n_div [8] 1 programmable n divisor value. bit7~0 are defined in the register 9 r/w 6 n_div [9] 0 programmable n divisor value. bit7~0 are defined in the register 9 r/w 5 m_div [5] 0 r/w 4 m_div [4] 1 r/w 3 m_div [3] 0 r/w 2 m_div [2] 0 r/w 1 m_div [1] 0 r/w 0 m_div [0] 0 programmable m divisor value. r/w 7.10 register 9: m/n program register (default: bbh) bit name pwd description type 7 n_div [7] 1 r/w 6 n_div [6] 0 r/w 5 n_div [5] 1 r/w 4 n_div [4] 1 r/w 3 n_div [3] 1 r/w 2 n_div [2] 0 r/w 1 n_div [1] 1 r/w 0 n_div [0] 1 programmable n divisor value bit 7 ~0. the bit 8 is defined in register 8. r/w
w83195br-118/W83195BG-118 stepless for intel 915/945 chipsets - 12 - 7.11 register 10: reserved (default: 3bh) bit name pwd description type 7 src_spspen 0 enable src spread spectrum feature 1: enable 0: disable r/w 6 reserved 0 reserved r/w 5 reserved 1 reserved r/w 4 reserved 1 reserved r/w 3 reserved 1 reserved r/w 2 reserved 0 reserved r/w 1 reserved 1 reserved r/w 0 reserved 1 reserved r/w 7.12 register 11: spread spectrum programming (default: 0eh) bit name pwd description type 7 sp_up [3] 0 r/w 6 sp_up [2] 0 r/w 5 sp_up [1] 0 r/w 4 sp_up [0] 0 spread spectrum up counter bit 3 ~ bit 0. r/w 3 sp_down [3] 1 r/w 2 sp_down [2] 1 r/w 1 sp_down [1] 1 r/w 0 sp_down [0] 0 spread spectrum down counter bit 3 ~ bit 0 2?s complement representation. ex: 1 -> 1111; 2 -> 1110; 7 -> 1001; 8 -> 1000 r/w 7.13 register 12: divisor control (default: 08h) bit name pwd description type 7 reserved 0 reserved r/w 6 kval6 x r/w 5 kval5 x define the pci divider ratio table-2 integrate the all divider configuration r/w 4 kval4 x r/w 3 kval3 x define the pcie divider ratio refer to table-2 r/w 2 kval2 x r/w 1 kval1 x r/w 0 kval0 x define the cpu divider ratio refer to table-2 r/w
w83195br-118/W83195BG-118 stepless for intel 915/945 chipsets publication release date: may 2006 - 13 - revision 0.81 table-2 cpu, pcie, pci divider ratio selection table pci pcie cpu bit5 bit3 bit1, 0 lsb msb 0 1 0 1 00 01 10 11 0 div12 div16 div3 div4 div2 div3 div4 div6 bit2/ bit4/ bit6 1 div20 div24 div8 div6 div8 div8 div8 div8 7.14 register 13: step-less enable control (default: 0ah) bit name pwd description type 7 en_mn_prog 0 0: output frequency depend on frequency table 1: program all clock frequency by changing m/n value the equation is vco =14.318mhz*(n+4)/ m . once the watchdog timer timeout, the bit will be clear. then the frequency will be decided by hardware default fs<2:0> or desired frequency select saf_freq [4:0] depend on en_safe_freq (reg0 - bit 0). r/w 6 n<10> 0 programmable n divisor bit 10. r/w 5 reserved 0 reserved r/w 4 reserved 0 reserved r/w 3 ival<3> 1 r/w 2 ival<2> 0 r/w 1 ival<1> 1 r/w 0 ival<0> 0 charge pump current selection r/w
w83195br-118/W83195BG-118 stepless for intel 915/945 chipsets - 14 - 7.15 register 14: control (default: 10h) bit name pwd description type 7 dri_cont 0 cput / srct / pcie_t / dot_t output state in during power down assertion. 1: driven (2*iref), 0: tristate (floating) cput / srct / pcie_t / dot_t output state in during stop mode assertion. 1: driven (6*iref), 0: tristate (floating) complementary parts always tri-state (floating) in power down or stop mode. r/w 6 reserved 0 reserved r/w 5 spcnt [5] 0 r/w 4 spcnt [4] 1 r/w 3 spcnt [3] 0 r/w 2 spcnt [2] 0 r/w 1 spcnt [1] 0 r/w 0 spcnt [0] 0 spread spectrum programmable time, the resolution is 280ns. default period is 11.8us r/w 7.16 register 15: sst control (default: ech) bit name pwd description type 7 inv_cpu 1 invert the cpu phase, 1: default, 0: inverse r/w 6 reserved 1 reserved r/w 5 spsp_type 1 spread spectrum implementation method 1 : pendulum type 0 : original r/w 4 reserved 0 reserved r/w 3 reserved 1 reserved r/w 2 reserved 1 reserved r/w 1 reserved 0 reserved r/w 0 reserved 0 reserved r/w
w83195br-118/W83195BG-118 stepless for intel 915/945 chipsets publication release date: may 2006 - 15 - revision 0.81 7.17 register 16: skew control (default: e4h) bit name pwd description type 7 inv_pcie 1 invert the pcie phase, 1: default, 0: inverse r/w 6 inv_pci 1 invert the pci phase, 1: default, 0: inverse r/w 5 cskew [2] 1 r/w 4 cskew [1] 0 r/w 3 cskew [0] 0 cpu1 to cpu0 skew control, skew resolution is 300ps the decision of skew direction is same as cskew<2:0> setting r/w 2 pskew [2] 1 r/w 1 pskew [1] 0 r/w 0 pskew [0] 0 cpu1 to pci skew control, skew resolution is 300ps the decision of skew direction is same as pskew [2:0] setting r/w 7.18 register 17: slew rate control (default: 00h) bit name pwd description type 7 reserved x reserved r/w 6 inv_48mhz 0 invert the 48mhz phase, 0: in phase with 24_48mhz 1: 180 degrees out of phase r/w 5 pci_f0_s2 0 r/w 4 pci_f0_s1 0 pci_f0 slew rate control 11 : strong , 00 : weak , 10/01 : normal r/w 3 reserved 0 reserved r/w 2 reserved 0 reserved r/w 1 reserved 0 reserved r/w 0 reserved 0 reserved r/w 7.19 register 18: reserved (default: 00h) 7.20 register 19: skew control (default: dah) bit name pwd description type 7 reserved 1 reserved r/w 6 reserved 1 reserved r/w 5 pcieskew<2> 0 r/w 4 pcieskew<1> 1 r/w 3 pcieskew<0> 1 cpu1 to pcie skew control skew resolution is 300ps the decision of skew directi on is same as pcieskew<2:0> setting r/w 2 reserved 0 reserved r/w 1 reserved 1 reserved r/w 0 reserved 0 reserved r/w
w83195br-118/W83195BG-118 stepless for intel 915/945 chipsets - 16 - 7.21 register 20: watch dog timer (default: 88h) bit name pwd description type 7 reserved 1 reserved r/w 6 wd_time [6] 0 r/w 5 wd_time [5] 0 r/w 4 wd_time [4] 0 r/w 3 wd_time [3] 1 r/w 2 wd_time [2] 0 r/w 1 wd_time [1] 0 r/w 0 wd_time [0] 0 setting the down count depth (failure decision). one bit resolution represents 250ms. default time depth is 8*250ms = 2.0 second. if the watchdog timer is counting, this register will return present down count value. r/w 7.22 register 21: asynchr onous control (default: 4bh) bit name pwd description type 7 tri-state 0 tri-state a ll output if set 1 r/w 6 reserved 1 reserved r/w 5 reserved 0 reserved r/w 4 reserved 0 reserved r/w 3 reserved 1 reserved r/w 2 src_base3 0 1: asynchronous pcie / pci always at 100mhz / 33mhz 0: pcie / pci frequency are follow bit1, 0 setting r/w 1 fix_addr<1> 1 r/w 0 fix_addr<0> 1 asynchronous pcie / pci frequency table selection fix_addr<1:0> => 00: 96 / 36mhz 01 : 96 / 32mhz 10: 128 / 38.4mhz 11 : output from pll1 r/w
w83195br-118/W83195BG-118 stepless for intel 915/945 chipsets publication release date: may 2006 - 17 - revision 0.81 8. access interface the w83195br-118 provides i 2 c serial bus for microprocessor to r ead/write internal registers. in the w83195br-118 is provided block read/block wri te and byte-data read/write protocol. the i 2 c address is defined at 0xd2. the register number is increased by one if using byte data read/write protocol. example: in block mode, byte number of program register is 1 in byte mode, byte number of program regi ster is 2 (byte number of block mode +1) block read and block write protocol 8.1 block write protocol 8.2 block read protocol ## in block mode, the command code must filled 8?h00 8.3 byte write protocol 8.4 byte read protocol
w83195br-118/W83195BG-118 stepless for intel 915/945 chipsets - 18 - 9. specifications 9.1 absolute maximum ratings stresses greater than those listed in this table may cause permanent damage to the device. precautions should be taken to avoid application of any voltage higher than the maximum rated voltages to this circuit. subjection to maximum conditions for extended periods may affect reliability. unused inputs must always be tied to an appropriate logic voltage level (ground or vdd). parameter rating absolute 3.3v core supply voltage -0.5v to +4.6v absolute 3.3v i/o supple voltage - 0.5v to + 4.6v operating 3.3v core supply voltage 3.135v to 3.465v operating 3.3v i/o supple voltage 3.135v to 3.465v storage temperature - 65 c to + 150 c ambient temperature - 55 c to + 125 c operating temperature 0 c to + 70 c input esd protection (human body model) 2000v 9.2 general operating characteristics vdd= 3.3v 5 %, ta = 0 c to +70 c, parameter symbol min max units test conditions input low voltage v il 0.8 v dc input high voltage v ih 2.0 v dc output low voltage v ol 0.4 v dc output high voltage v oh 2.4 v dc operating supply current i dd 350 ma cpu = 100 to 400 mhz pci = 33.3 mhz with load 10pf input pin capacitance cin 5 pf output pin capacitance cout 6 pf input pin inductance lin 7 nh
w83195br-118/W83195BG-118 stepless for intel 915/945 chipsets publication release date: may 2006 - 19 - revision 0.81 9.3 skew group timing clock vdd = 3.3v 5 %, ta = 0 c to +70 c, cl=10pf parameter min max units test conditions cpu pair to cpu pair skew 125 ps measure crossing point pcie pair to pcie pair skew 125 ps measure crossing point pci to pci skew 500 ps measured at 1.5v 48mhz to 48mhz skew 1000 ps measured at 1.5v 9.4 cpu 0.7v electrical characteristics vddc= 3.3v 5 %, ta = 0 c to +70 c, test load rs=33, rp=49.9 cl=2pf, vol=0.175v, voh=0.525v, vr=475, iref=2.32ma, ioh=6*iref parameter min max units test conditions rise time 175 700 ps measure single ended waveform fall time 175 700 ps measure single ended waveform absolute crossing point voltages 250 550 mv measure single ended waveform voltage high 660 850 mv measure single ended waveform voltage low -150 mv measure single ended waveform cycle to cycle jitter 100 ps measure differential waveform duty cycle 45 55 % measure differential waveform 9.5 src 0.7v electrical characteristics vdds= 3.3v 5 %, ta = 0 c to +70 c, test load rs=33, rp=49.9 cl=2pf, vol=0.175v, voh=0.525v, vr=475, iref=2.32ma, ioh=6*iref parameter min max units test conditions rise time 175 700 ps measure single ended waveform fall time 175 700 ps measure single ended waveform absolute crossing point voltages 250 550 mv measure single ended waveform voltage high 660 850 mv measure single ended waveform voltage low -150 mv measure single ended waveform cycle to cycle jitter 100 ps measure differential waveform duty cycle 45 55 % measure differential waveform
w83195br-118/W83195BG-118 stepless for intel 915/945 chipsets - 20 - 9.6 pcie 0.7v electrical characteristics vddpe= 3.3v 5 %, ta = 0 c to +70 c, test load rs=33, rp=49.9 cl=2pf, vol=0.175v, voh=0.525v, vr=475, iref=2.32ma, ioh=6*iref parameter min max units test conditions rise time 175 700 ps measure single ended waveform fall time 175 700 ps measure single ended waveform absolute crossing point voltages 250 550 mv measure single ended waveform voltage high 660 850 mv measure single ended waveform voltage low -150 mv measure single ended waveform cycle to cycle jitter 100 ps measure differential waveform duty cycle 45 55 % measure differential waveform 9.7 pci electrical characteristics vddp= 3.3v 5 %, ta = 0 c to +70 c, test load, cl=10pf, parameter min max units test conditions rise time 500 2000 ps vol=0.4v, voh=2.4v fall time 500 2000 ps voh=2.4v, vol=0.4v cycle to cycle jitter 250 ps measured at 1.5v duty cycle 45 55 % measured at 1.5v pull-up current min -33 ma vout=1.0v pull-up current max -33 ma vout=3.135v pull-down current min 30 ma vout=1.95v pull-down current max 38 ma vout=0.4v 9.8 24m, 48m electrical characteristics vdd48= 3.3v 5 %, ta = 0 c to +70 c, test load, cl=10pf, parameter min max units test conditions rise time 500 2000 ps vol=0.4v, voh=2.4v fall time 500 2000 ps voh=2.4v, vol=0.4v long term jitter 500 ps measured at 1.5v duty cycle 45 55 % measured at 1.5v pull-up current min -33 ma vout=1.0v pull-up current max -33 ma vout=3.135v pull-down current min 30 ma vout=1.95v pull-down current max 38 ma vout=0.4v
w83195br-118/W83195BG-118 stepless for intel 915/945 chipsets publication release date: may 2006 - 21 - revision 0.81 9.9 ref electrical characteristics vdd= 3.3v 5 %, ta = 0 c to +70 c, test load, cl=10pf, parameter min max units test conditions rise time 500 2000 ps vol=0.4v, voh=2.4v fall time 500 2000 ps voh=2.4v, vol=0.4v cycle to cycle jitter 1000 ps measured at 1.5v duty cycle 45 55 % measured at 1.5v pull-up current min -29 ma vout=1.0v pull-up current max -23 ma vout=3.135v pull-down current min 29 ma vout=1.95v pull-down current max 27 ma vout=0.4v 9.10 dot 0.7v electrical characteristics vdd= 3.3v 5 %, ta = 0 c to +70 c, test load rs=33, rp=49.9 cl=2pf, vol=0.175v, voh=0.525v, vr=475, iref=2.32ma, ioh=6*iref parameter min max units test conditions rise time 175 700 ps measure single ended waveform fall time 175 700 ps measure single ended waveform absolute crossing point voltages 250 550 mv measure single ended waveform voltage high 660 850 mv measure single ended waveform voltage low -150 mv measure single ended waveform cycle to cycle jitter 250 ps measure differential waveform duty cycle 45 55 % measure differential waveform
w83195br-118/W83195BG-118 stepless for intel 915/945 chipsets - 22 - 10. ordering information part number package type production flow w83195br-118 56 pin ssop commercial, 0 c to +70 c W83195BG-118 56 pin ssop commercial, 0 c to +70 c 11. how to read the top marking left line: winbond logo 1st line: the part number: w83195br-1 18, the pb-free part number W83195BG-118 2nd line: tracking code 2 8051234 2 : wafers manufactured in winbond fab 2 8051234 : wafer production series lot number 3rd line: tracking code 520 g c a sa 520 : packages made in '2005, week 20 g : assembly house id; o means ose, g means gr c : internal use code a : ic revision sa : internal use code all the trademarks of products and companies menti oned in this datasheet belong to their respective owners. w83195br-118 28051234 520 g c a sa W83195BG-118 28051234 520 g c a sa
w83195br-118/W83195BG-118 stepless for intel 915/945 chipsets publication release date: may 2006 - 23 - revision 0.81 12. package drawing and dimensions 56 pin ssop-300mil e e b y seating plane c l c l1 0 0.008 0.400 0.292 7.52 0 7.42 8 7.59 10.31 b e d c 18.2 9 10.16 a1 a2 a 10.41 18.54 18.42 2.79 2.34 8 0.299 0.296 0.092 0.110 0.410 0.720 0.730 0.725 0.406 min. dimension in inch symbol dimension in mm min. nom max. max. nom 0.20 e l l1 y 0.008 0.0135 0.005 0.010 0.024 0.032 0.055 0.003 0.20 0.34 0.13 0.25 0.51 0.76 0.64 0.020 0.030 0.025 0.61 0.81 1.40 0.08 h e 2.57 0.101 .045 .055 .035 .045 he 0.40/0.50 dia top view end view see detail "a" parting line side view d a1 a2 a detail"a" 0.095 0.012 0.016 0.088 0.090 0.010 0.040 2.41 0.30 0.41 2.24 2.29 0.25 1.02
w83195br-118/W83195BG-118 stepless for intel 915/945 chipsets - 24 - important notice winbond products are not designed, intended, authorized or warranted for use as components in systems or equipment intended for surg ical implantation, atomic energy control instruments, airplane or spaceship instruments, transportation instruments, traffic signal instruments, combustion control instruments, or for other applications intended to support or sustain life. further more, winbond products are not intended for applications wherein failure of winbond products could result or lead to a situation wherein personal injury, death or severe property or environmental damage could occur. winbond customers using or selling these products for use in such applications do so at their own risk and agree to fully indemnify winbond for any damages resulting from such improper use or sales. headquarters no. 4, creation rd. iii, science-based industrial park, hsinchu, taiwan tel: 886-3-5770066 fax: 886-3-5665577 http://www.winbond.com.tw/ taipei office tel: 886-2-8177-7168 fax: 886-2-8751-3579 winbond electronics corporation america 2727 north first street, san jose, ca 95134, u.s.a. tel: 1-408-9436666 fax: 1-408-5441798 winbond electronics (h.k.) ltd. no. 378 kwun tong rd., kowloon, hong kong fax: 852-27552064 unit 9-15, 22f, millennium city, tel: 852-27513100 please note that all data and specifications are subject to change without notice. all the trademarks of products and companies mentioned in this datasheet belong to their respective owners. winbond electronics (shanghai) ltd. 200336 china fax: 86-21-62365998 27f, 2299 yan an w. rd. shanghai, tel: 86-21-62365999 winbond electronics corporation japan shinyokohama kohoku-ku, yokohama, 222-0033 fax: 81-45-4781800 7f daini-ueno bldg, 3-7-18 tel: 81-45-4781881 9f, no.480, rueiguang rd., neihu district, taipei, 114, taiwan, r.o.c.

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