参数资料
型号: W156
英文描述: Clocks and Buffers
中文描述: 时钟和缓冲器
文件页数: 6/13页
文件大小: 167K
代理商: W156
W158
Document #: 38-07164 Rev. *A
Page 6 of 13
PCI_STOP# Timing Diagram
[18, 22, 23, 24, 25, 26]
PWRDWN# Timing Diagram
[18, 22, 23, 27, 28]
Notes:
23. All internal timing is referenced to the CPU clock.
24. PCI_STOP# signal is an input signal that must be made synchronous to PCI_F output.
25. All other clocks continue to run undisturbed.
26. PWRDWN# and CPU_STOP# are shown in a HIGH state.
27. PWRDWN is an asynchronous input and metastable conditions could exist. This signal must be synchronized.
28. The shaded Sections on the VCO and the Crystal signals indicate an active clock.
Timing Diagrams
(continued)
CPU
PCI
(internal)
PCI_STOP#
PWRDWN#
PCI_F
(external)
HI
HI
PCI
(external)
CPU_STOP#
CPU
(internal)
PCI
(internal)
PWRDWN#
VCO
Crystal
PCI
(external)
CPU
(external)
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