Z53C80 查看數據表（PDF） - Zilog
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Z53C80 Datasheet PDF : 40 Pages
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ZILOG
AC CHARACTERISTICS
DMA Read (Block Mode) Target Receive Table
Name
Description
Min
1
DRQ False from /DACK True
2
/IOR Recovery Time
120
3
Data Access Time from Read Enable [1]
4
Data Hold Time from End of /IOR
10
5
Width of /EOP Pulse [2]
50
6
/IOR False to /REQ True (/ACK False)
7
/ACK True to /REQ False
8
/ACK False to /REQ True (/IOR False)
9
/ACK True to READY True
10
READY True to Valid Data
11
/IOR False to READY False
12
DATA Setup time to /ACK
20
13
DATA Hold Time from /ACK
30
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
proper recognition of the /EOP pulse.
AC CHARACTERISTICS
Reset Timing Diagram
1
/RESET
Max
60
70
90
80
100
70
50
70
Z53C80 SCSI
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
AC CHARACTERISTICS
Reset Table
No
Description
1
Minimum Width of /RESET
Figure 53. Reset
Min
Max
100
Units
ns
PS97SCC0200
37
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