參數(shù)資料
型號(hào): Z53C8003VSC
廠商: ZILOG INC
元件分類: 總線控制器
英文描述: SMALL COMPUTER SYSTEM INTERFACE (SCSI)
中文描述: SCSI BUS CONTROLLER, PQCC44
封裝: PLASTIC, LCC-44
文件頁數(shù): 27/40頁
文件大?。?/td> 447K
代理商: Z53C8003VSC
27
Z53C80 SCSI
Z
ILOG
PS97SCC0200
AC CHARACTERISTICS
DMA Write Initiator Send Cycle Table
No
Description
Min
Max
Units
1
2
3
DRQ Low from /DACK Low
/DACK High to DRQ High
Write Enable Width
[1]
60
ns
ns
ns
30
50
4
5
6
/DACK Hold from End of /WR
Data Setup to End of Write Enable
[1]
Data Hold Time from End of /WR
0
50
25
ns
ns
ns
7
8
9
Width of /EOP Pulse
[2]
/REQ Low to /ACK Low
/REQ High to DRQ High
50
ns
ns
ns
90
70
10
11
12
13
/DACK High to /ACK High
/WR High to Valid SCSI Data
Data Hold from Write Enable
[1]
Data Setup to /ACK Low
90
50
ns
ns
ns
ns
15
55
Notes:
[1]
[2]
Write Enable is the occurrence of /WR and /DACK.
/EOP, /WR, and /DACK must be concurrently Low for at least T7 for
proper recognition of the /EOP pulse.
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