IDTCV125PAG IDT, Integrated Device Technology Inc, IDTCV125PAG Datasheet
IDTCV125PAG
Specifications of IDTCV125PAG
Related parts for IDTCV125PAG
IDTCV125PAG Summary of contents
Page 1
IDTCV125 PROGRAMMABLE FLEXPC CLOCK FOR P4 PROCESSOR FEATURES: • Power management control suitable for notebook applications • One high precision PLL for CPU, SSC and N programming • One high precision PLL for SRC/PCI, supports 100MHz output frequency, SSC and ...
Page 2
IDTCV125 PROGRAMMABLE FLEXPC CLOCK FOR P4 PROCESSOR PIN CONFIGURATION V _PCI _PCI PCI1 4 PCI2 5 PCI3 V _PCI _PCI 7 DD PCIF0 _ 8 /ITP EN (1) PCIF1/SEL100/96 ...
Page 3
IDTCV125 PROGRAMMABLE FLEXPC CLOCK FOR P4 PROCESSOR PIN DESCRIPTION Pin Number Name 1 V _PCI _PCI SS 3 PCI1 4 PCI2 5 PCI3 6 V _PCI _PCI DD 8 PCIF0/ITP_EN 9 PCIF1/SEL100/96 ...
Page 4
IDTCV125 PROGRAMMABLE FLEXPC CLOCK FOR P4 PROCESSOR PIN DESCRIPTION (CONT.) Pin Number Name 43 CPU0# 44 CPU0 45 V _CPU SS 46 SCL 47 SDA 48 V _REF DD 49 XTAL_OUT 50 XTAL_IN 51 V _REF SS 52 REF 53 ...
Page 5
IDTCV125 PROGRAMMABLE FLEXPC CLOCK FOR P4 PROCESSOR SSC MAGNITUDE CONTROL FOR CPU, SRC, AND SMC SMC[2:0] 000 001 010 011 100 101 110 111 SEL 100/96# CONFIGURATION SEL 100/96# LVDS Frequency 100 S.E. CLOCK STRENGTH SELECTION (PCI, ...
Page 6
IDTCV125 PROGRAMMABLE FLEXPC CLOCK FOR P4 PROCESSOR CONTROL REGISTERS N PROGRAMMING PROCEDURE Use Index byte write. • For N programming, the user only needs to access Byte 11, Byte 12, and Byte 9. • 1. Write Byte 11 for CPU ...
Page 7
IDTCV125 PROGRAMMABLE FLEXPC CLOCK FOR P4 PROCESSOR BYTE 3 Bit Output(s) Affected 0 Reserved 1 SRC1 2 SRC2 3 SRC3 4 SRC4 5 SRC5 6 SRC6 7 SRC7 BYTE 4 Bit Output(s) Affected 0 CPU0, CPU0# 1 CPU1, CPU1# 2 ...
Page 8
IDTCV125 PROGRAMMABLE FLEXPC CLOCK FOR P4 PROCESSOR BYTE 6 Bit Output(s) Affected 0 CPU[2:0] 1 CPU[2:0] 2 CPU[2:0] 3 PCI, SRC 4 REF 5 Reserved 6 7 CPU, SRC, PCI PCIF, REF, USB48, DOT96 BYTE 7 Bit Output(s) Affected 0 ...
Page 9
IDTCV125 PROGRAMMABLE FLEXPC CLOCK FOR P4 PROCESSOR BYTE 9 Bit Output(s) Affected 0 One cycle read SRC, PLL2, SSC enable BYTE 10 Bit Output(s) Affected 0 SRC SMC0 1 SRC SMC1 2 SRC ...
Page 10
IDTCV125 PROGRAMMABLE FLEXPC CLOCK FOR P4 PROCESSOR BYTE 13 Bit Output(s) Affected 0 48MHzStr0 1 48MHStr1 2 REFStr0 3 REFStr1 4 PCIStrC0 5 PCIStrC1 6 PCIFStr0 7 PCIFStr1 ELECTRICAL CHARACTERISTICS - INPUT / SUPPLY / COMMON OUTPUT PARAMETERS Following Conditions ...
Page 11
IDTCV125 PROGRAMMABLE FLEXPC CLOCK FOR P4 PROCESSOR ELECTRICAL CHARACTERISTICS - CPU, SRC, AND DOT96 0.7 CURRENT MODE DIFFERENTIAL PAIR (1) Following Conditions Apply Unless Otherwise Specified: Operating Condition 0°C to +70°C, Supply Voltage Symbol Parameter Z ...
Page 12
IDTCV125 PROGRAMMABLE FLEXPC CLOCK FOR P4 PROCESSOR ELECTRICAL CHARACTERISTICS - CPU, SRC, AND DOT96 0.7 CURRENT MODE DIFFERENTIAL PAIR, CONTINUED Following Conditions Apply Unless Otherwise Specified: Operating Condition 0°C to +70°C, Supply Voltage Symbol Parameter (2) ...
Page 13
IDTCV125 PROGRAMMABLE FLEXPC CLOCK FOR P4 PROCESSOR ELECTRICAL CHARACTERISTICS, 48MHZ, USB Following Conditions Apply Unless Otherwise Specified: Operating Condition 0°C to +70°C, Supply Voltage Symbol Parameter (1,2) ppm Static Error T Clock Period (2) PERIOD V ...
Page 14
IDTCV125 PROGRAMMABLE FLEXPC CLOCK FOR P4 PROCESSOR PCI STOP FUNCTIONALITY The PCI_STOP# signal active low input controlling PCI and SRC outputs. If PCIF[1:0] and SRC clocks can be set to be free-running through SMBus programming, they will ...
Page 15
IDTCV125 PROGRAMMABLE FLEXPC CLOCK FOR P4 PROCESSOR CPU STOP FUNCTIONALITY The CPU_STOP# signal is an active low input controlling the CPU outputs. This signal can be asserted asynchronously. CPU_STOP# CPU CPU# 1 Normal Normal float ...
Page 16
IDTCV125 PROGRAMMABLE FLEXPC CLOCK FOR P4 PROCESSOR PD, POWER DOWN asynchronous active high input used to shut off all clocks cleanly prior to clock power. When PD is asserted high all clocks will be driven low before ...
Page 17
IDTCV125 PROGRAMMABLE FLEXPC CLOCK FOR P4 PROCESSOR PD DE-ASSERTION PD CPU 133MHz CPU# 133MHz SRC 100MHz SRC# 100MHz USB 48MHz PCI 33MHz REF 14.31818 t <1.8mS STABLE t DRIVE_PWRDWN <300µS, <200mV 17 COMMERCIAL TEMPERATURE RANGE ...
Page 18
IDTCV125 PROGRAMMABLE FLEXPC CLOCK FOR P4 PROCESSOR DIFFERENTIAL CLOCK TRISTATE To minimize power consumption, CPU[2:0] clock outputs are individually configurable through SMBus to be driven or tristated during PD and CPU_STOP# mode and the SRC clock is configurable to be ...
Page 19
IDTCV125 PROGRAMMABLE FLEXPC CLOCK FOR P4 PROCESSOR LVDS AC TIMING REQUIREMENTS Following Conditions Apply Unless Otherwise Specified: Operating Condition 0°C to +70°C A Symbol Parameter (1,2,3) t Clock Rise Time 1 R (1,2,3) t Clock Fall Time 1 ...
Page 20
IDTCV125 PROGRAMMABLE FLEXPC CLOCK FOR P4 PROCESSOR LVDS AVERAGE PERIOD, TPERIOD Following Conditions Apply Unless Otherwise Specified: Operating Condition 0°C to +70°C A Spread 0% (no spread) 0.8% down-spread 1% down-spread 1.25% down-spread 1.5% down-spread 1.75% down-spread 2% ...
Page 21
IDTCV125 PROGRAMMABLE FLEXPC CLOCK FOR P4 PROCESSOR MISCELLANEOUS AC TIMING REQUIREMENTS Following Conditions Apply Unless Otherwise Specified: Operating Condition 0°C to +70°C A Symbol Parameter t Output Enable Delay (All Outputs) PZL t PZH t Output Disable Delay ...
Page 22
IDTCV125 PROGRAMMABLE FLEXPC CLOCK FOR P4 PROCESSOR PWRDWN (POWER DOWN) CLARIFICATION P WRDWN CLOCK VCO LVDS LVDS WRDWN CLOCK VCO LVDS LVDS Assertion WRDWN Off Starting t STABLE t PZH P De-Assertion WRDWN 22 COMMERCIAL ...
Page 23
IDTCV125 PROGRAMMABLE FLEXPC CLOCK FOR P4 PROCESSOR LVDS SYSTEM IMPLEMENTATION Clock LVDS Clock 33.2 33Ω 5% LVDS CV125 33Ω 5% LVDS# 49.9Ω 475Ω Unit Ω 49 TLA TLB 49.9Ω 1% Test Load ...
Page 24
IDTCV125 PROGRAMMABLE FLEXPC CLOCK FOR P4 PROCESSOR ORDERING INFORMATION IDTCV XXX XX Device Type Package CORPORATE HEADQUARTERS 6024 Silver Creek Valley Road San Jose, CA 95138 X Grade Blank Commercial Temperature Range (0°C to +70°C) PA Thin Small Shrink Outline ...