IDTCV119E CLOCK GENERATOR FOR DESKTOP PC PLATFORMS COMMERCIAL TEMPERATURE RANGE CLOCK GENERATOR FOR DESKTOP PC PLATFORMS DESCRIPTION: FEATURES: • • • • • • • • • • • IDTCV119E IDTCV119E is a 48 pin clock generation device for desktop PC platforms. This chip incorporates four PLLs to allow independent generation of CPU, AGP/ PCI, SRC, and 48MHz clocks. The dedicated PLL for Serial ATA clock provides high accuracy frequency. This device also implements Band-gap referenced IREF to reduce the impact of VDD variation on differential outputs, which can provide more robust system performance. Static PLL frequency divide error can be as low as 36 ppm, providing high accuracy output clock. Each CPU, AGP/PCI, SRC clock has its own Spread Spectrum selection. 4 PLL architecture Linear frequency programming Independent frequency programming and SSC control Band-gap circuit for differential output High power-noise rejection ratio 66MHz to 533MHz CPU frequency VCO frequency up to 1.1G Support index block read/write, single cycle index block read Programmable REF, 3V66, PCI, 48MHz I/O drive strength Programmable 3V66 and PCI Skew Available in SSOP package KEY SPECIFICATION: • • • • CPU/SRC CLK cycle to cycle jitter < 125ps SATA CLK cycle to cycle jitter < 125ps PCI CLK cycle to cycle jitter < 250ps Static PLL frequency divide error as low as 36 ppm FUNCTIONAL BLOCK DIAGRAM PLL1 SSC EasyN Programming X1 CPU CLK Output Buffers XTAL Osc Amp CPU[1:0] CPU_ITP IREF REF 1.0 X2 3V66/PCI Output Buffers PLL2 SSC EasyN Programming PCI[5:0], PCIF[2:0] 3V66[3:1] SDATA SM Bus Controller SCLK SRC CLK Output Buffer PLL3 SSC SRC VTT_PWRGD Watch Dog Timer IREF FS[1:0] Control Logic 48MHz[1:0] S EL24_48# 48MHz Output Buffer PLL4 RESET# OUTPUT TABLE CPU (Pair) 3V66 3V66/VCH PCI PCIF REF 48MHz 24 - 48MHz SRC (Pair) Reset# 3 3 1 6 3 2 2 0 1 1 The IDT logo is a registered trademark of Integrated Device Technology, Inc. COMMERCIAL TEMPERATURE RANGE JANUARY 2004 1 © 2004 Integrated Device Technology, Inc. DSC-6551/6 IDTCV119E CLOCK GENERATOR FOR DESKTOP PC PLATFORMS COMMERCIAL TEMPERATURE RANGE ABSOLUTE MAXIMUM RATINGS(1) PIN CONFIGURATION Symbol *FS1/REF0 1 48 VDDA *FS0/REF1 2 47 VSS VDD_REF 3 46 IREF X1 4 45 CPUT_ITP X2 5 44 CPUC_ITP VSS 6 43 VSS PCIF0 7 42 CPUT1 PCIF1 8 41 CPUC1 PCIF2 9 40 VDD_CPU VDD_PCI 10 39 CPUT0 CPUC0 Description Min VDDA 3.3V Core Supply Voltage VDDIN 3.3V Logic Input Supply Voltage GND - 0.5 TSTG Storage Temperature TAMBIENT Ambient Operating Temperature TCASE Case Temperature ESD Prot Input ESD Protection –65 0 Max Unit 4.6 V 4.6 V +150 °C +70 °C +115 °C 2000 V Human Body Model NOTE: 1. Stresses greater than those listed under ABSOLUTE MAXIMUM RATINGS may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect reliability. VSS 11 38 PCI0 12 37 VSS PCI1 13 36 SRCT PCI2 14 35 SRCC PCI3 15 34 VDD_SRC VDD_PCI 16 33 *VTT_PWRGD# VSS 17 32 *SDATA PCI4 18 FS1.0 CPU AGP PCI N Resolution 31 *SCLK 19 00 100 66.66 33.3 0.223721591 PCI5 30 RESET# *RESET#/PD# 20 01 200 66.66 33.3 0.447443181 29 3V66_1 133.33 66.66 33.3 0.298295454 **SEL24/24_48MHz# 21 10 28 VSS 22 11 166.67 66.66 33.3 0.397727272 48MHz0 27 VDD_3V66 VSS 23 26 3V66_2 VDD48 24 25 3V66_3/VCH HW FREQUENCY SELECTION * = ~ 130KΩ internal pull-up. ** = ~ 130KΩ internal pull-down. SSOP TOP VIEW 2 IDTCV119E CLOCK GENERATOR FOR DESKTOP PC PLATFORMS COMMERCIAL TEMPERATURE RANGE SW FREQUENCY SELECTION BS[2:0] and WBS[2:0] are band selects. Whenever there is a band switch, the user has to issue a WD soft alarm (see Byte 32 and Byte 33). In CPU N/M programming, CPU frequency = N * resolution. WDBS[2:0] or BS[2:0] = 000 WDBS[2:0] or BS[2:0] = 001 000 100 200.01 001 100.9 201.8 010 102.91 204.93 138.11 169.83 011 104.93 209.85 139.9 173.01 100 110.07 215.22 141.99 175 101 114.99 220.14 144.97 178.18 110 119.91 225.06 147.95 180.17 111 125.06 229.99 150.05 184.94 N Resolution 0.223721591 0.447443181 0.298295454 Corresponding N 447 447 447 CFS[3:0] WDBS[2:0] or BS = 010 WDBS[2:0] or BS[2:0] = 011 WDBS[2:0] or BS[2:0] = 100 WDBS[2:0] or BS[2:0] = 101 WDBS[2:0] or BS[2:0] = 110 WDBS[2:0] or BS[2:0] = 111 133.34 166.65 200.01 400.01 266.66 333.3 135.13 167.84 66.67 401.8 267.57 334.89 0.397727272 0.447443181 0.894886363 0.894886363 0.795454544 419 447 447 298 419 3V66-PCI/F SKEW SPREAD SPECTRUM MAGNITUDE CONTROL (SMC) Skew[2:0] SMC[2:0] 000 normal, 3V66 leads PCI 2.5ns 000 Off 001 move forward 200ps 001 - 0.25 010 move forward 400ps 010 - 0.5 011 move forward 600ps 011 - 0.75 100 move backward 200ps 100 -1 101 move backward 400ps 101 ± 0.125 110 move backward 600ps 110 ± 0.25 111 move backward 800ps 111 ± 0.375 AGP/PCI STRENGTH Str[1:0] AGP/PCI FREQUENCY SELECTION In AGP/PCI N/M programming, AGP frequency = N * 0.223721591 0, 0 2H(1) 0, 1 1L(2) 1, 0 1H(2) 1, 1 2L(1) AFS[2:0] AGP PCI Corresponding N 000 66.67 33.33 298 001 68.68 34.34 307 010 70.7 35.35 316 011 72.71 36.35 325 100 74.5 37.25 333 101 76.51 38.26 342 REF Str[1:0] 110 78.53 39.26 351 0, 0 2L(1) 111 80.54 40.27 360 0, 1 1H(2) 1, 0 2H(1) 1, 1 1L(2) NOTES: 1. Recommended for multiple load. 2. Recommended for single load. REF STRENGTH NOTES: 1. Recommended for multiple load. 2. Recommended for single load. 3 IDTCV119E CLOCK GENERATOR FOR DESKTOP PC PLATFORMS COMMERCIAL TEMPERATURE RANGE PIN DESCRIPTION Pin Number Name Type Description 1 FS1/REF0 I/O Frequency select latch input 3.3V input HIGH/LOW voltage/ 14.318MHz reference clock output(1) 2 FS0/REF1 I/O Frequency select latch input 2.5V input HIGH/LOW voltage/ 14.318MHz reference clock output(1) 3 VDD_REF PWR 4 X1 IN Xtal input 5 X2 OUT Xtal output 6 VSS GND 7 PCIF0 I/O Frequency select latch input 3.3V input HIGH/LOW voltage/ PCI free running clock(2) 8 PCIF1 OUT PCI free running clock 9 PCIF2 OUT PCI free running clock 10 VDD_PCI PWR 3.3V 11 VSS GND GND 12 PCI0 OUT PCI clock 13 PCI1 OUT PCI clock 14 PCI2 OUT PCI clock 15 PCI3 OUT PCI clock 16 VDD_PCI PWR 3.3V 17 VSS GND GND 18 PCI4 OUT PCI clock 19 PCI5 OUT PCI clock 20 RESET#/PD# OUT Reset output signal from watchdog circuit, active LOW/ power down control input. Mode selectable through SM bus, power on is RESET# mode.(1) Byte 34 bit 5. 21 SEL24/24_48MHz# OUT 24/48MHz clock output, LOW 48MHz(2) 22 48MHz0 OUT 48MHz clock output. Phase is 180 different with 24_48, 48MHz1, and VCH. Output drive stength can be doubled through SM programming. 23 VSS GND GND 24 VDD48 PWR 3.3V 25 3V66_3/VCH OUT 66MHz or 48MHz clock output. Selectable by SM Bus. Power on is 66MHz. 26 3V66_2 OUT 66MHz clock output 27 VDD_3V66 PWR 3.3V 28 VSS GND GND 3.3V GND 29 3V66_1 OUT 66MHz clock output 30 RESET# OUT RESET# 31 SCLK IN SMBus clock(1) 32 SDATA I/O SMBus data(1) 33 VTT_PWRGD# IN Used for power on latch, active LOW(1) 34 VDD_SRC PWR 3.3V 35 SRCC OUT SATA 0.7V current mode differential clock output 36 SRCT OUT SATA 0.7V current mode differential clock output 37 VSS GND GND 38 CPUC0 OUT Hosts 0.7V current mode differential clock output 39 CPUT0 OUT Hosts 0.7V current mode differential clock output 40 VDD_CPU PWR 3.3V NOTES: 1. ~ 130KΩ internal pull-up. 2. ~ 130KΩ internal pull-down. 4 IDTCV119E CLOCK GENERATOR FOR DESKTOP PC PLATFORMS COMMERCIAL TEMPERATURE RANGE PIN DESCRIPTION (CONT.) Pin Number Name Type 41 CPUC1 OUT Hosts 0.7V current mode differential clock output Description 42 CPUT1 OUT Hosts 0.7V current mode differential clock output 43 VSS GND GND 44 CPUC_ITP OUT Hosts 0.7V current mode differential clock output 45 CPUT_ITP OUT Hosts 0.7V current mode differential clock output 46 IREF OUT Reference current for differential output 47 VSS GND GND 48 VDDA PWR 3.3V 5 IDTCV119E CLOCK GENERATOR FOR DESKTOP PC PLATFORMS COMMERCIAL TEMPERATURE RANGE SMBUS PROTOCOL INDEX BLOCK WRITE PROTOCOL Bit # of bits From 1 1 Master 2-9 8 Master ONECYCLE™ INDEX BLOCK READ Description Bit # of bits From Start 1 1 Master Start D2h 2-9 8 Master D2h 10 1 Slave Acknowledge 11-18 8 Master Register offset byte (starting byte) 19 1 Slave Acknowledge 20-27 8 Master 1xxxxxxx. Bit[20] = 1, followed with byte count, which will be stored into SMBus table byte 8. 28 1 Slave Acknowledge 29 1 Master Repeated start 30-37 8 Master D3h 10 1 Slave Acknowledge 11-18 8 Master Register offset byte (starting byte) 19 1 Slave Acknowledge 20-27 8 Master Byte count N (0 is not a valid byte count)(1) 28 1 Slave Acknowledge 29-36 8 Master First data byte 37 1 Slave Acknowledge 38-45 8 Master Second data byte 46 1 Slave Acknowledge : Nth data byte Stop NOTE: 1. Bit [21:27] = byte count. Bit 20 = 1, bit [21:27] will be stored into SMBus table, Byte 8. SMBus Byte 8 is read byte count register, power on default is 0FH. Bit 20 = 0, normal SMBus operation. # of bits From 1 1 Master Start 2-9 8 Master D2h 10 1 Slave Acknowledge 11-18 8 Master Register offset byte (starting byte) 19 1 Slave Acknowledge 20 1 Master Repeated start 21-28 8 Master D3h 29 1 Slave Acknowledge 30-37 8 Slave Byte count, N, SMBus table byte 8 value. Power on default is 0FH[15]. 38 1 Master Acknowledge 39-46 8 Slave Offset data byte, specified by bit 11-18 47 1 Master Acknowledge 48-55 8 Slave Offset + 1 data byte Slave Offset + N-2 Master Acknowledge Slave Offset + N-1 38 1 Slave Acknowledge 39-46 8 Slave Byte count, N, SMBus table byte 8 value. Power on default is 0FH[15]. 47 1 Master Acknowledge 48-55 8 Slave Offset data byte, specified by bit[11:18] 56 1 Master Acknowledge 57-64 8 Slave Offset + 1 data byte : INDEX BLOCK READ PROTOCOL Bit Description Description Slave Offset + N-2 Master Acknowledge Slave Offset + N-1 Not acknowledge Stop BYTE WRITE METHODS: • Setting bit[11:18] = starting address, bit [20:27] = 01H. BYTE READ METHODS (CHOSE ONE): • Use IDT OneCycle Index Block Read, bit[20:27] = 10000001. Notice that byte count register (byte 8) will be changed to 0IH. • Use Index Block Write protocol to change byte count (byte 8) to 1. After that, use Index Block Read. : TO CHANGE BYTE 8 VALUE: • Use IDT OneCycle Index Block Read, as above • Use Index Block Write protocol to change byte 8 value. Not acknowledge Stop 6 IDTCV119E CLOCK GENERATOR FOR DESKTOP PC PLATFORMS COMMERCIAL TEMPERATURE RANGE BYTE 0: DUMMY BYTE BYTE 1 Bit Output(s) Affected 7 Reserve 6 Reserve 5 SS_EN 4 Reserve Description/Function 0 1 Type Power On 0 0 Spread spectrum enable On Off RW 1 0 3 SRCT, SRCC Output enable Tristate Enable RW 1 2 CPUT_ITP, CPUC_ITP Output enable Tristate Enable RW 1 1 CPUT1, CPUC1 Output enable Tristate Enable RW 1 0 CPUT0, CPUC0 Output enable Tristate Enable RW 1 BYTE 2 Bit Output(s) Affected Description/Function 0 1 Type Power On 7 SRCT SRCT Powerdown drive mode Driven in power down Tristate in power down RW 0 CPUT Powerdown drive mode Driven in power down Tristate in power down RW 6 Reserve 5 CPUT1, 0 4 Reserve 0 0 0 3 3V66_2 2 Reserve Output enable Tristate Enable RW 1 1 1 Reserve 1 0 Reserve 1 BYTE 3 Bit Output(s) Affected Description/Function 0 7 Reserve 6 Reserve 5 PCI5 Output enable Tristate 4 PCI4 Output enable 3 PCI3 Output enable 2 PCI2 1 PCI1 0 PCI0 1 Type Power On RW 1 Enable RW 1 Tristate Enable RW 1 Tristate Enable RW 1 Output enable Tristate Enable RW 1 Output enable Tristate Enable RW 1 Output enable Tristate Enable RW 1 Recommended 0 7 0 IDTCV119E CLOCK GENERATOR FOR DESKTOP PC PLATFORMS COMMERCIAL TEMPERATURE RANGE BYTE 4 Bit Output(s) Affected Description/Function 0 1 Type Power On Recommended 7 48MHz0 Drive strength 2 * DRIVE Normal RW 0 1 6 5 SRCFS0 Reserve SRC frequency select 100MHz 200MHz RW RW 0 1 0 4 3V66_1 Output enable RW 1 Tristate Enable 3 1 2 PCIF2 Output enable Tristate Enable RW 1 1 PCIF1 Output enable Tristate Enable RW 1 0 PCIF0 Output enable Tristate Enable RW 1 0 BYTE 5 Bit Output(s) Affected Description/Function 0 1 Type Power On 7 3V66_3/VCH 3V66_3/VCH mode select 3V66 mode, 66MHz VCH mode, 48MHz RW 0 6 Reserve 0 5 Reserve 4 3V66_3/VCH 0 3 Reserve 0 2 Reserve 0 1 Reserve 0 0 Reserve 0 Output enable Tristate Enable RW 1 BYTE 6: DUMMY BYTE BYTE 7 Bit Output(s) Affected Description/Function 0 7 RID3 x 6 RID2 x 5 RID1 x 4 RID0 x 3 VID3 0 2 VID2 1 1 VID1 0 0 VID0 1 8 1 Type Power On IDTCV119E CLOCK GENERATOR FOR DESKTOP PC PLATFORMS COMMERCIAL TEMPERATURE RANGE BYTE 8 (READ BYTE COUNT REGISTER) Bit Output(s) Affected Description/Function 0 1 Type Power On 7 Reserve 6 BC6 5 BC5 0 4 BC4 0 3 BC3 1 2 BC2 1 1 BC1 1 0 BC0 1 0 See note 1 0 NOTE: 1. Can be written by index block write or OneCycle block read. See SMBUS PROTOCOL tables. BYTES 9-20: DUMMY BYTES BYTE 21 Bit Output(s) Affected Description/Function 7 PCIFStr1 AGP/PCI STRENGTH table 0 1 Type Power On 6 PCIFStr0 AGP/PCI STRENGTH table 5 Reserve 1 4 Reserve 1 3 Reserve 1 2 Reserve 1 1 3V66Str1 AGP/PCI STRENGTH table 1 0 3V66Str0 AGP/PCI STRENGTH table 1 1 1 BYTE 22 Bit Output(s) Affected Description/Function 0 7 REFStr1 REF STRENGTH table 1 6 REFStr0 REF STRENGTH table 0 5 PCIStrC1 PCI[7:5] strength control, AGP/PCI STRENGTH table 1 1 4 PCIStrC0 PCI[7:5] strength control, AGP/PCI STRENGTH table 1 0 3 PCIStrB1 PCI[4:2] strength control, AGP/PCI STRENGTH table 1 1 2 PCIStrB0 PCI[4:2] strength control, AGP/PCI STRENGTH table 1 0 1 PCIStrA1 PCI[1:0] strength control, AGP/PCI STRENGTH table 1 1 0 PCIStrA0 PCI[1:0] strength control, AGP/PCI STRENGTH table 1 0 9 1 Type Power On Recommended IDTCV119E CLOCK GENERATOR FOR DESKTOP PC PLATFORMS COMMERCIAL TEMPERATURE RANGE BYTE 23 Bit Output(s) Affected Description/Function 0 1 Type Power On 7 48MHz0 Output enable Tristate Enable RW 1 Recommended 6 24_48MHz Output enable Tristate Enable RW 1 5 REF1 Output enable Tristate Enable RW 1 4 REF0 Output enable Tristate Enable RW 1 3 Reserve 1 0 2 Reserve Output enable Tristate Enable RW 1 0 1 Reserve Output enable Tristate Enable RW 1 0 0 Reserve 0 BYTE 24 Bit Output(s) Affected Description/Function 0 1 Type Power On 7 WDHRB WD hard alarm status read back R 6 WDSRB WD soft alarm status read back R 1 FSR1 HW FS1 read back R HW FS1 0 FSR0 HW FS0 read back R HW FS0 5 4 3 2 0 BYTE 25: CPU PLL CONTROL Bit Output(s) Affected Description/Function 0 1 Type Power On 7 CPU frequency band source select HW SW RW 0 6 BS2, Band select 2 0 = selected by HW latched FS[1:0], CFS[2:0] 1 = selected by BS[2:0], CFS[2:0] BS[2:0] CFS[2:0] select CPU frequency(1) RW 0 5 BS1, Band select 1 BS[2:0] CFS[2:0] select CPU frequency(1) RW 0 4 BS0, Band select 0 (1) BS[2:0] CFS[2:0] select CPU frequency RW 0 3 CFS2 BS[2:0] CFS[2:0] select CPU frequency(1) RW 0 2 CFS1 BS[2:0] CFS[2:0] select CPU frequency RW 0 1 CFS0 BS[2:0] CFS[2:0] select CPU frequency 0 CPU N Programming Enable CPU N Programming Enable (1) (1) NOTES: 1. See SW FREQUENCY SELECTION table. 10 Disable Enable RW 0 RW 0 IDTCV119E CLOCK GENERATOR FOR DESKTOP PC PLATFORMS COMMERCIAL TEMPERATURE RANGE BYTE 26: CPU PLL CONTROL Bit Output(s) Affected Description/Function 7 WDBS2 At the event of WD hard alarm time out, 0 1 Type Power On RW 1 6 WDBS1 If Byte 32 bit 7 = 1, CPU frequency is RW 0 5 WDBS0 selected by WDBS[2:0] WDCFS[2:0](1) RW 0 4 CSMC2 CPU SMC2, SMC table RW 0 3 CSMC1 CPU SMC1, SMC table RW 1 2 CSMC0 CPU SMC0, SMC table RW 0 1 CPN9 CPU PLL N9 RW 0 0 CPN8 CPU PLL N8 RW 1 NOTE: 1. See SW FREQUENCY SELECTION table. BYTE 27: CPU PLL N PROGRAMMING In CPU N programming mode, CPU frequency = CPN[9:0] * band resolution. CPN0 has to be written for the CPN[9:0] to be loaded into PLL N divider. See SW FREQUENCY SELECTION table. Bit Output(s) Affected Description/Function 7 CPN7 6 CPN6 5 0 1 Type Power On CPU PLL N7 RW 0 CPU PLL N6 RW 0 CPN5 CPU PLL N5 RW 1 4 CPN4 CPU PLL N4 RW 0 3 CPN3 CPU PLL N3 RW 1 2 CPN2 CPU PLL N2 RW 0 1 CPN1 CPU PLL N1 RW 1 0 CPN0 CPU PLL N0 RW 0 BYTE 28: AGP/PCI PLL CONTROL Bit Output(s) Affected Description/Function 7 AFS2 6 AFS1 0 1 Type Power On See AGP/PCI FREQUENCY SELECTION table RW 0 See AGP/PCI FREQUENCY SELECTION table RW 0 5 AFS0 See AGP/PCI FREQUENCY SELECTION table RW 0 4 WDAFS2 AGP/PCI WD hard alarm time out frequency selection RW 0 3 WDAFS1 AGP/PCI WD hard alarm time out frequency selection RW 0 2 WDAFSO AGP/PCI WD hard alarm time out frequency selection RW 0 1 APN9 AGP/PCI PLL N9 RW 0 0 APN8 AGP/PCI PLL N8 RW 1 11 IDTCV119E CLOCK GENERATOR FOR DESKTOP PC PLATFORMS COMMERCIAL TEMPERATURE RANGE BYTE 29: AGP/PCI N PROGRAMMING In AGP/PCI N programming mode, AGP/PCI frequency = APN[9:0] * 0.223721591. APN0 has to be written for the APN[9:0] to be loaded into PLL N divider. Bit Output(s) Affected Description/Function 7 APN7 6 5 0 1 Type Power On AGP/PCI PLL N7 RW 0 APN6 AGP/PCI PLL N6 RW 0 APN5 AGP/PCI PLL N5 RW 1 4 APN4 AGP/PCI PLL N4 RW 0 3 APN3 AGP/PCI PLL N3 RW 1 2 APN2 AGP/PCI PLL N2 RW 0 1 APN1 AGP/PCI PLL N1 RW 1 0 APN0 AGP/PCI PLL N0 RW 0 BYTE 30: AGP/PCI SRC CONTROL Bit Output(s) Affected Description/Function 0 1 Type Power On 7 AGP/PCI N Programming Mode Enable AGP/PCI N Programming Enable Disable Enable RW 0 6 AGP/PCI Frequency Source Select 0 = fixed 66/33MHz 66/33MHz RW 0 1 = selected by AFS[2:0](1) 5 AGP SMC 2 AGP/PCI SSC magnitude control(2) RW 0 4 AGP SMC 1 AGP/PCI SSC magnitude control(2) RW 1 3 AGP SMC 0 AGP/PCI SSC magnitude control RW 0 2 3V66-PCI/F skew 2 Adjust 3V66 and PCI/F skew (3) RW 0 1 3V66-PCI/F skew 1 Adjust 3V66 and PCI/F skew(3) RW 0 0 3V66-PCI/F skew 0 Adjust 3V66 and PCI/F skew RW 0 (2) (3) NOTES: 1. See AGP/PCI FREQUENCY SELECTION table. 2. See SMC table. 3. See 3V66 AND PCI/F SKEW table. BYTE 31: WATCHDOG TIMER Bit Output(s) Affected Description/Function Type Power On 7 WD Hard Alarm timer 7 Specify WD Hard Alarm time out waiting time. RW 0 6 WD Hard Alarm timer 6 Time Out time = WD Hard Alarm timer[7:0] * 290ms RW 0 5 WD Hard Alarm timer 5 Default is 11*290 = 3.2s RW 0 4 WD Hard Alarm timer 4 RW 0 3 WD Hard Alarm timer 3 RW 1 2 WD Hard Alarm timer 2 RW 0 1 WD Hard Alarm timer 1 RW 1 0 WD Hard Alarm timer 0 RW 1 12 0 1 IDTCV119E CLOCK GENERATOR FOR DESKTOP PC PLATFORMS COMMERCIAL TEMPERATURE RANGE BYTE 32: WD SOFT RESET TIMER WD Soft Alarm timer has to be shorter than WD Hard Alarm timer. WDE and WD Soft Alarm bits, Byte 33 bit 7 and bit 5, have to be enabled for this Soft Alarm function. Bit Output(s) Affected Description/Function 0 1 Type Power On 7 CPU WD Hard Alarm safe frequency mode select 0 = frequency select controlled by Byte 25 bit 7 1 = CPU frequency specified by WDBS[2:0] WDCFS[2:0] HW/I2C WDBS WDCFS RW 0 6 WDCFS2 CPU WD time out safe frequency select(1) RW 0 5 WDCFS1 RW 0 4 WDCFS0 RW 0 3 WD soft alarm timer 3 Specify WD Soft Alarm Time Out time RW 0 2 WD soft alarm timer 2 Time Out time = WD Soft Alarm Timer[3:0]*290ms RW 0 1 WD soft alarm timer 1 Default is 580ms. RW 1 0 WD soft alarm timer 0 RW 0 NOTE: 1. See SW FREQUENCY SELECTION table. BYTE 33: WD CONTROL Bit Output(s) Affected Description/Function 0 1 Type Power On 7 WDE Watchdog enable Disable Enable RW 0 6 WD FS relatch Relatch HW FS2, 1, 0 Disable Enable RW 0 in event of WD Hard Alarm time out 5 WD Soft Alarm enable WD Soft Alarm enable Disable Enable RW 0 4 AGP/PCI WD Hard Alarm In event of WD Hard Alarm time out HW/I2C WDAFS RW 0 time out safe frequency mode select 0 = AGP/PCI frequency controlled by Byte 30 bit 6 1 = AGP/PCI frequency specified by WDAFS[2:0] 3 SRC SMC 2 SRC SSC magnitude control(1) 1 2 SRC SMC 1 SRC SSC magnitude control (1) 0 1 SRC SMC 0 SRC SSC magnitude control(1) 1 0 Reserve 0 NOTE: 1. See SMC table. BYTE 34 Bit Output(s) Affected 7 SW 24_48MHz control override 6 24_48MHz select 5 Reset#/PD# Description/Function 0 1 0 = controlled by hardware, 1 = controlled by bit 6 HW control controlled by Type Power On RW 0 0 bit 6 Reset#/PD# mode select 48MHz 24MHz RW Reset# PD# RW 0 4 0 3 0 2 1 0 13 IDTCV119E CLOCK GENERATOR FOR DESKTOP PC PLATFORMS COMMERCIAL TEMPERATURE RANGE CPU AND AGP CLOCK FREQUENCY SELECTION Band switch will take effect only when WD Soft Alarm time out is issued, which means there is a RESET issued. Even if the user changed BS[2:0], if there is no WD Soft Alarm, CPU PLL still uses the old band. CPN[9:0] and APN[9:0] will be loaded into PLL only when CPN0 and APN0 are written respectively. AGP/PCI FREQUENCY CPU FREQUENCY Byte 25 bit 0, bit 7 CPU Frequency Selected by: Byte 30 bit 7, bit 6 AGP/PCI Frequency Selected by: 00 HW FS[1:0] 00 66/33 01 BS[2:0], CFS[2:0], Byte 25 01 AFS[2:0], Byte 28 10 CPN[9:0] * Band Resolution 10 APN[9:0] * 0.223721591 11 CPN[9:0] * Band Resolution 11 APN[9:0] * 0.223721591 WD SOFT AND HARD ALARM/TIME OUT OPERATION WD HARD ALARM TIMER [7:0] WD SOFT ALARM TIMER [3:0] WDE Trigger Watch Dog Circuit WD HARD ALARM TIME OUT Set WDHRB Issue RESET# Change CPU Frequency (see Byte 32, bit 7) Change AGP/PCI Frequency (see Byte 33, bit 4) If WD FS Relatch enabled, relatch HW FS2, FS1, FS0 Reset Byte 30 bit 7, and Byte 25 bit 0, to 0 WD SOFT ALARM TIME OUT If WD Soft Alarm Enabled: Set WDSRB Issue RESET# Switch CPU PLL band User only uses WD Soft Alarm when there is a band switch. It can be from HW to SW select, or in the SW select with band change. Soft Alarm Timer has to be shorter than Hard Alarm Timer. At the event of WD Hard Alarm time out, CPU Safe return frequency is decided by two bits: Byte 32 bit 7 and Byte 25 bit 7. AGP/PCI Safe Return Frequency is decided by Byte 33 bit 4 and Byte 30 bit 6. Byte 30 bit 7, and Byte 25 bit 0, will be reset to 0. Byte 32 bit 7, CPU WD Hard Alarm Time Out Frequency Select: Byte 33 bit 4, Byte 25 bit 7 AGP/PCI Hard Alarm Time Out Frequency Select: Byte 30 bit 6 00 Latched HW FS[1:0] 00 01 BS[2:0], CFS[2:0], Byte 25 01 AFS[2:0], Byte 28 10 WDBS[2:0], WDCFS[2:0], Byte 26 and Byte 32 10 WDAFS, Byte 28 11 WDBS[2:0], WDCFS[2:0], Byte 26 and Byte 32 11 WDAFS, Byte 28 14 66/33MHz IDTCV119E CLOCK GENERATOR FOR DESKTOP PC PLATFORMS COMMERCIAL TEMPERATURE RANGE ELECTRICAL CHARACTERISTICS - INPUT / SUPPLY / COMMON OUTPUT PARAMETERS Following Conditions Apply Unless Otherwise Specified: Operating Condition: TA = 0°C to +70°C, Supply Voltage: VDD = 3.3V ± 5% Symbol Parameter Test Conditions Min. Typ. Max. Unit VIH 3.3V Input HIGH Voltage 3.3V ± 5% 2 — VDD + 0.3 V VIL 3.3V Input LOW Voltage 3.3V ± 5% VSS - 0.3 — 0.8 V IIH Input HIGH Current VIN = VDD –5 — 5 µA IIL1 Input LOW Current VIN = 0V, inputs with no pull-up resistors –5 — — µA IIL2 Input LOW Current VIN = 0V, inputs with pull-up resistors –200 — — µA IDD3.3OP Operating Supply Current Full active, CL = full load — — 400 mA IDD3.3PD Powerdown Current All differential pairs driven — — 70 mA All differential pairs tri-stated — — 12 VDD = 3.3V — 14.31818 — MHz — — 7 nH Logic inputs — — 5 Output pin capacitance — — 6 FI Input Frequency(2) LPIN Pin Inductance(3) CIN COUT Input Capacitance(3) CINX TSTAB pF X1 and X2 pins — — 5 Clock Stabilization(3,4) From VDD power-up or de-assertion of PD# to first clock — — 1.8 ms Modulation Frequency(3) Triangular modulation 30 — 33 KHz TDRIVE_SRC(3) SRC output enable after PCI_Stop# de-assertion — — 15 ns TDRIVE_PD#(3) CPU output enable after PD# de-assertion — — 300 us TFALL_PD#(3) Fall time of PD# — — 5 ns TRISE_PD#(4) Rise time of PD# — — 5 ns TDRIVE_CPU_Stop#(3) CPU output enable after CPU_Stop# de-assertion — — 10 us TFALL_CPU_Stop#(3) Fall time of PD# — — 5 ns TRISE_CPU_Stop#(4) Rise time of PD# — — 5 ns NOTES: 1. Available to CV104, CV105, CV107, and CV109. 2. Input frequency should be measured at the REF output pin and tuned to ideal 14.31818MHz to meet ppm frequency accuracy on PLL outputs. 3. This parameter is guaranteed by design, but not 100% production tested. 4. See TIMING DIAGRAMS for timing requirements. 15 IDTCV119E CLOCK GENERATOR FOR DESKTOP PC PLATFORMS COMMERCIAL TEMPERATURE RANGE ELECTRICAL CHARACTERISTICS - CPU AND SRC 0.7 CURRENT MODE DIFFERENTIAL PAIR(1) Following Conditions Apply Unless Otherwise Specified: Operating Condition: TA = 0°C to +70°C, Supply Voltage: VDD = 3.3V ± 5%; CL = 2pF Symbol ZO Parameter Current Source Output Impedance(2) Test Conditions VO = VX Min. Typ. Max. Unit 3000 — — Ω VOVS Maximum Voltage (Overshoot) — — VH + 0.3 V VUDS Minimum Voltage (Undershoot) -0.3 — — V VHIGH Voltage HIGH(2) Statistical measurement on single-ended signal using 660 — 850 mV VLOW Voltage LOW(2) oscilloscope math function –150 — 150 VOVS Max Voltage(2) Measurement on single-ended signal using absolute value — — 1150 VUDS Min Voltage(2) –300 — — VCROSS(ABS) Crossing Voltage (abs)(2) 250 — 550 mV d - VCROSS Crossing Voltage (var)(2) Variation of crossing over all edges — — 140 mV Long Accuracy(2,3) See TPERIOD Min. - Max. values –300 — 300 ppm 400MHz nominal, no Intel spec 2.4993 — 2.5008 333.33MHz nominal, no Intel spec 2.9991 — 3.0009 266.66MHz nominal, no Intel spec 3.7489 — 3.7511 200MHz nominal 4.9985 — 5.0015 166.66MHz nominal 5.9982 — 6.0018 133.33MHz nominal 7.4978 — 7.5023 100MHz nominal 9.997 — 10.003 400MHz spread, no Intel spec 2.4993 — 2.5008 333.33MHz spread, no Intel spec 2.9991 — 3.0009 266.66MHz spread, no Intel spec 3.7489 — 3.7511 200MHz spread 4.9985 — 5.0266 166.66MHz spread 5.9982 — 6.032 133.33MHz spread 7.4978 — 7.54 100MHz spread 9.997 — 10.0533 ppm TPERIOD TPERIOD Average Period(3) Average Period(3) mV ns ns tR Rise Time(2) VOL = 0.175V, VOH = 0.525V 175 — 700 ps tF Fall Time(2) VOL = 0.175V, VOH = 0.525V 175 — 700 ps d-tR Rise Time Variation(2) — — 125 ps d-tF Fall Time Variation(2) — — 125 ps dT3 Duty Cycle(2) Measurement from differential waveform 45 — 55 % tSK3 Skew(2) VT = 50% — — 100 ps Jitter, Cycle to Cycle(2) Measurement from differential waveform — — 85 ps tJCYC-CYC NOTES: 1. SRC clock outputs run only at 100MHz or 200MHz. Specs for 133.33 and 166.66 do not apply to SRC clock pair. 2. This parameter is guaranteed by design, but not 100% production tested. 3. All long term accuracy and clock period specifications are guaranteed with the assumption that the REF output is at 14.31818MHz. 16 IDTCV119E CLOCK GENERATOR FOR DESKTOP PC PLATFORMS COMMERCIAL TEMPERATURE RANGE ELECTRICAL CHARACTERISTICS - 3V66 Following Conditions Apply Unless Otherwise Specified: Operating Condition: TA = 0°C to +70°C, Supply Voltage: VDD = 3.3V ± 5%; CL = 10 - 30pF Symbol Parameter Test Conditions Min. Typ. Max. Unit ppm Long Accuracy(1,2) See Tperiod Min. - Max. values -300 — 300 ppm VOH Output HIGH Voltage IOH = -1mA 2.4 — — V VOL Output LOW Voltage IOL = 1mA — — 0.55 V Clock Period(2) 66MHz output nominal 14.9955 — 15.0045 ns 66MHz output spread 14.9955 — 15.0799 VOH at Min. = 1V -33 — — VOH at Max. = 3.135V — — -33 VOL at Min. = 1.95V 30 — — TPERIOD IOH IOL Output HIGH Current Output LOW Current mA mA VOL at Max. = 0.4V — — 38 Edge Rate(1) Rising/Falling edge rate 1 — 4 V/ns tR1 Rise Time(1) VOL = 0.4V, VOH = 2.4V 0.5 — 2 ns tF1 Fall Time(1) VOL = 0.4V, VOH = 2.4V 0.5 — 2 ns tSK1 Skew(1) VT = 1.5V — — 250 ps VT = 1.5V 45 — 55 % VT = 1.5V, 3V66 — — 250 ps Min. Typ. Max. Unit — — 300 ppm ns dT1 tJCYC-CYC Duty Cycle(1) Jitter(1) NOTES: 1. This parameter is guaranteed by design, but not 100% production tested. 2. All long term accuracy and clock period specifications are guaranteed with the assumption that the REF output is at 14.31818MHz. ELECTRICAL CHARACTERISTICS - PCICLK / PCICLK_F Following Conditions Apply Unless Otherwise Specified: Operating Condition: TA = 0°C to +70°C, Supply Voltage: VDD = 3.3V ± 5%; CL = 10 - 30pF Symbol ppm TPERIOD Parameter Test Conditions Long Accuracy(1,2) See Tperiod Min. - Max. values Clock Period(2) 33.33MHz output nominal 29.991 — 30.009 33.33MHz output spread 29.991 — 30.1598 2.4 — — VOH Output HIGH Voltage IOH = -1mA VOL Output LOW Voltage IOL = 1mA — — 0.55 V IOH Output HIGH Current VOH at Min. = 1V -33 — — mA VOH at Max. = 3.135V — — -33 VOL at Min. = 1.95V 30 — — IOL Output LOW Current V mA VOL at Max. = 0.4V — — 38 Edge Rate(1) Rising edge rate 1 — 4 V/ns Edge Rate(1) Falling edge rate 1 — 4 V/ns tR1 Rise Time(1) VOL = 0.4V, VOH = 2.4V 0.5 — 2 ns tF1 Fall Time(1) VOL = 0.4V, VOH = 2.4V 0.5 — 2 ns Cycle(1) dT1 Duty VT = 1.5V 45 — 55 % tSK1 Skew(1) VT = 1.5V — — 500 ps tJCYC-CYC Jitter(1) VT = 1.5V — — 250 ps NOTES: 1. This parameter is guaranteed by design, but not 100% production tested. 2. All long term accuracy and clock period specifications are guaranteed with the assumption that the REF output is at 14.31818MHz. 17 IDTCV119E CLOCK GENERATOR FOR DESKTOP PC PLATFORMS COMMERCIAL TEMPERATURE RANGE ELECTRICAL CHARACTERISTICS, 48MHZ, USB AND VCH Following Conditions Apply Unless Otherwise Specified: Operating Condition: TA = 0°C to +70°C, Supply Voltage: VDD = 3.3V ± 5%; CL = 10 - 20pF Symbol Parameter Test Conditions Long Accuracy(1,2) See Tperiod Min. - Max. values Clock Period(2) 48MHz output nominal VOH Output HIGH Voltage VOL IOH ppm TPERIOD IOL Min. Typ. Max. Unit — — 300 ppm 20.8271 — 20.8396 ns IOH = -1mA 2.4 — — V Output LOW Voltage IOL = 1mA — — 0.55 V Output HIGH Current VOH at Min. = 1V -33 — — mA VOH at Max. = 3.135V — — -33 VOL at Min. = 1.95V 30 — — Output LOW Current mA VOL at Max. = 0.4V — — 38 Edge Rate(1) Rising edge rate 1 — 2 V/ns Edge Rate(1) Falling edge rate 1 — 2 V/ns tR1 Rise Time(1) VOL = 0.4V, VOH = 2.4V 1 — 2 ns tF1 Fall Time(1) VOL = 0.4V, VOH = 2.4V 1 — 2 ns VT = 1.5V 45 — 55 % — — 350 ps Min. Typ. Max. Unit — — 300 ppm 20.8271 — 20.8396 ns dT1 tJCYC-CYC Duty Cycle(1) Jitter(1) NOTES: 1. This parameter is guaranteed by design, but not 100% production tested. 2. All long term accuracy and clock period specifications are guaranteed with the assumption that the REF output is at 14.31818MHz. ELECTRICAL CHARACTERISTICS, DOT 48MHZ Following Conditions Apply Unless Otherwise Specified: Operating Condition: TA = 0°C to +70°C, Supply Voltage: VDD = 3.3V ± 5%; CL = 10 - 20pF Symbol Parameter Test Conditions Long Accuracy(1,2) See Tperiod Min. - Max. values Clock Period(2) 48MHz output nominal VOH Output HIGH Voltage IOH = -1mA 2.4 — — V VOL Output LOW Voltage IOL = 1mA — — 0.55 V IOH Output HIGH Current VOH at Min. = 1V -33 — — mA VOH at Max. = 3.135V — — -33 VOL at Min. = 1.95V 30 — — ppm TPERIOD IOL Output LOW Current mA VOL at Max. = 0.4V — — 38 Edge Rate(1) Rising edge rate 2 — 4 V/ns Edge Rate(1) Falling edge rate 2 — 4 V/ns tR1 Rise Time(1) VOL = 0.4V, VOH = 2.4V 0.5 — 1 ns tF1 Fall Time(1) VOL = 0.4V, VOH = 2.4V 0.5 — 1 ns VT = 1.5V 45 — 55 % — — 350 ps dT1 tJCYC-CYC Duty Cycle(1) Jitter(1) NOTES: 1. This parameter is guaranteed by design, but not 100% production tested. 2. All long term accuracy and clock period specifications are guaranteed with the assumption that the REF output is at 14.31818MHz. 18 IDTCV119E CLOCK GENERATOR FOR DESKTOP PC PLATFORMS COMMERCIAL TEMPERATURE RANGE PD#, POWER DOWN PD# is an asynchronous active low input used to shut off all clocks cleanly prior to clock power. When PD# is asserted low all clocks will be driven low before turning off the VCO. In PD# de-assertion all clocks will start without glitches. PWRDWN# CPU CPU# SRC SRC# PCIF/PCI USB 3V66 REF 1 Normal 0 IREF * 2 or float Normal Normal Normal 33MHz 48MHz 66MHz 14.318MHz Float IREF * 2 or float Float Low Low Low Low PD# ASSERTION PD# should be sampled low by two consecutive CPU# rising edges before stopping clocks. All single-ended clocks will be held low on their next high to low transition. All differential clocks will be held high on the next high to low transition of the complimentary clock. If the control register determining to drive mode is set to ‘tri-state’, the differential pair will be stopped in tri-state mode, undriven. When the drive mode but corresponding to the CPU or SRC clock of interest is set to ‘0’ the true clock will be driven high at 2 x IREF and the complementary clock will be tristated. If the control register is programmed to ‘1’ both clocks will be tristated. PWRDWN# CPU 133MHz CPU# 133MHz SRC 100MHz SRC# 100MHz USB 48MHz PCI 33MHz REF 14.31818 19 IDTCV119E CLOCK GENERATOR FOR DESKTOP PC PLATFORMS COMMERCIAL TEMPERATURE RANGE PD# DE-ASSERTION The time from the de-assertion of PD# or until power supply ramps to get stable clocks will be less than 1.8ms. If the drive mode control bit for PD# tristate is programmed to ‘1’ the stopped differential pair must first be driven high to a minimum of 200mV in less than 300µs of PD# deassertion. tSTABLE <1.8mS PWRDWN# CPU 133MHz CPU# 133MHz SRC 100MHz SRC# 100MHz USB 48MHz PCI 33MHz REF 14.31818 tDRIVE_PWRDWN# <300µS, <200mV N PROGRAMMING JITTER MEASUREMENT Tested on IDT test board, 10" trace, 10pF loading. Measured at CPU0, differential active probe. Data showed may vary due to CMOS process. 133MHz MODE 100MHz MODE N= 200h (512) 300h (768) 3FFh (1023) Output Freq. (MHz) 115 172 229 N= 200h (512) 300h (768) 3FFh (1023) CPU Jitter (ps) 80 51 65 166MHz MODE N= 200h (512) 300h (768) 3FFh (1023) Output Freq. (MHz) 153 229 306 CPU Jitter (ps) 76 79 72 Output Freq. (MHz) 229 344 458 CPU Jitter (ps) 68 84 82 200MHz MODE Output Freq. (MHz) 204 305 407 CPU Jitter (ps) 71 72 92 N= 200h (512) 300h (768) 3FFh (1023) 20 IDTCV119E CLOCK GENERATOR FOR DESKTOP PC PLATFORMS COMMERCIAL TEMPERATURE RANGE ORDERING INFORMATION IDTCV XXX Device Type XX Package X Grade CORPORATE HEADQUARTERS 2975 Stender Way Santa Clara, CA 95054 Blank Commercial Temperature Range (0°C to +70°C) PV Small Shrink Outline Package 119E Clock Generator for Desktop PC Platforms for SALES: 800-345-7015 or 408-727-6116 fax: 408-492-8674 www.idt.com 21 for Tech Support: [email protected] (408) 654-6459