W320-04H Silicon Laboratories Inc, W320-04H Datasheet - Page 12

• Manufacturer Part Number: W320-04H
• Description: Clock Synthesizer / Jitter Cleaner 200MHz Differential CPU Outputs
• Manufacturer: Silicon Laboratories Inc

Specifications of W320-04H

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Rev 1.0, November 25, 2006
PWRGD# Timing Diagrams
CLOCK OUTPUTS
VCC W320 CLOCK
GEN
PWRDWN# Deassertion
GND VRM 5/12V
PWRGD# FROM
VCC CPU CORE
PWRGD# FROM
NPN
CLOCK STATE
CLOCK VCO
66BUFF1/GMCH
66BUFF0,2
PCI
PCI_F (APIC)
PWR_DWN#
CPU
CPU#
3V66
66IN
USB
REF
BSEL [1:0]
PWRGD#
PWRGD#
VID [3:0]
VRM
Note: PCI_STOP# asserted LOW
State 0
OFF
OFF
< 3 ms
Figure 2. CPU Power Before Clock Power
Possible glitch while Clock VCC is coming
up. Will be gone in 0.2–0.3 mS delay.
0.2 -- 0.3 ms
State 1
delay
PWRGD#
State 2
Wait for
100-200 μs max.
10-30 μs min.
Sample
BSELS
State 3
ON
ON
W320-04
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