CDC925 Datasheet, PDF (16/18 Pages) Texas Instruments – 133-MHz CLOCK SYNTHESIZER/DRIVER FOR PC MOTHERBOARDS WITH 3-STATE OUTPUTS

CDC925
133-MHz CLOCK SYNTHESIZER/DRIVER FOR PC MOTHERBOARDS
WITH 3-STATE OUTPUTS
SCAS633 – JULY 28, 1999
PARAMETER MEASUREMENT INFORMATION
CPU
(internal)
PCI
(internal)
CPU_STOP
PCI_STOP
PWR_DOWN
PCI_F
(external)
PCI
(external)
CPU
(internal)
PCI
(internal)
Figure 6. PCI_STOP Timing
PWR_DOWN
CPU
(external)
PCI
(external)
VCO
CRYSTAL
ÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇ
ÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇÇ
NOTE A: Shaded sections on the VCO and Crystal waveforms indicate that the VCO and crystal oscillators are active and there is a valid clock.
Figure 7. Power-Down Timing
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