MB86604L Datasheet, PDF (39/56 Pages) Fujitsu Component Limited. – SCSI-II Protocol Controller (with single-ended driver/receiver)

MB86604L
• Synchronous transfer mode
(a) REQ/ACK signal period
Parameter
Symbol
Position*¹
Value
Min.
Max.
Unit
REQ assert time *²
REQ negate time *²
ACK assert time
ACK negate time
ACK input cycle time 1
ACK input cycle time 2
tRQAP
tRQNP
tAKAP
tAKNP
tAKCY1
tAKCY2
A
A • tCLK – 12
—
ns
B
N • tCLK + 2
—
ns
C
20
—
ns
D
20
—
ns
E
1 tCLK
—
ns
F
3 tCLK
—
ns
*1: The position number indicates the position in the waveform.
*2: “A” and “N” values are based on the transfer period register (address 0Dh). See (8) for more setting values.
REQ
ACK
A
t RQAP
B
t RQNP
C
t AKAP
D
t AKNP
E
t AKCY1
F
t AKCY2
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