cy2275a Cypress Semiconductor Corporation., cy2275a Datasheet - Page 8

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

Switching Waveforms
(Free-Running)
CPU_STOP
CPU-SDRAM Clock Skew
CPU-PCI Clock Skew
(Free-Running)
PCI_STOP
CPU_STOP
PCI_STOP
Notes:
10. PCICLK on and PCICLK off latency is 1 rising edge of the external PCICLK.
11. PCI_STOP may be applied asynchronously. It is synchronized internally.
8.
9.
PCICLK
(External)
PCICLK
CPUCLK
(Internal)
(External)
(Internal)
PCICLK
CPUCLK
PCICLK
CPUCLK
(Internal)
(Internal)
PCICLK
CPUCLK on and CPUCLK off latency is 2 or 3 CPUCLK cycles.
CPU_STOP may be applied asynchronously. It is synchronized internally.
PCICLK
CPUCLK
[10, 11]
[8, 9]
SDRAM
CPUCLK
t
(continued)
6
t
7
8
CY2275A