cy2275a Cypress Semiconductor Corporation., cy2275a Datasheet - Page 9

• Manufacturer Part Number: cy2275a
• Description: Pentium Clock Synthesizer/driver Desktop With Intel 82440lx With Dimms
• Manufacturer: Cypress Semiconductor Corporation.

Switching Waveforms
PWR_DWN#
PWR_DOWN
Timing Requirements for the I
(External)
(External)
CPUCLK
CPUCLK
(Internal)
(Internal)
PCICLK
PCICLK
SDA
SCL
Crystal
VCO
Shaded section on the VCO and Crystal waveforms indicates that the VCO and crystal oscillator are active, and there is a valid clock.
t
11
t
12
(continued)
2
C Bus
t
13
t
18
t
16
t
t
19
14
9
t
17
t
15
t
12
CY2275A
t
20