Z53C80SCSI ZILOG [Zilog, Inc.], Z53C80SCSI Datasheet - Page 37
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Z53C80SCSI
Manufacturer Part Number
Z53C80SCSI
Description
SMALL COMPUTER SYSTEM INTERFACE (SCSI)
Manufacturer
ZILOG [Zilog, Inc.]
Datasheet
1.Z53C80SCSI.pdf
(40 pages)
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Notes:
[1] Read enable is the occurrence of both /IOR and /DACK.
[2] /EOP, /IOR, and /DACK must be concurrently true for at least T5 for
PS97SCC0200
Z
AC CHARACTERISTICS
DMA Read (Block Mode) Target Receive Table
AC CHARACTERISTICS
Reset Timing Diagram
AC CHARACTERISTICS
Reset Table
ILOG
No
1
proper recognition of the /EOP pulse.
Name
10
11
12
13
1
2
3
4
5
6
7
8
9
Description
Minimum Width of /RESET
Description
DRQ False from /DACK True
/IOR Recovery Time
Data Access Time from Read Enable
Data Hold Time from End of /IOR
Width of /EOP Pulse
/IOR False to /REQ True (/ACK False)
/ACK True to /REQ False
/ACK False to /REQ True (/IOR False)
/ACK True to READY True
READY True to Valid Data
/IOR False to READY False
DATA Setup time to /ACK
DATA Hold Time from /ACK
/RESET
[2]
Figure 53. Reset
[1]
1
120
Min
10
50
20
30
Min
100
Max
100
60
70
90
80
70
50
70
Max
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Z53C80 SCSI
Units
ns
37
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