Intel PCI-7200 User Manual Page 39

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Operation Theorem
29
5. O_REQ & O_ACK Handshaking
OUT_REQ
t1
t
3
valid data
DO0~Do31
t1 19ns
t
3
t
2
1 PCI CLK Cycle
OUT_ACK
5 PCI CLK Cycle
valid data
t2
Note: O_ACK must be de-asserted before O_REQ asserts, O_ACK can be
asserted any time after O_REQ asserts, O_REQ will be reasserted after
O_ACK is asserted.
O_REQ
O_ACK
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