參數(shù)資料
型號: MB86604LPFV
元件分類: 總線控制器
英文描述: SCSI BUS CONTROLLER, PQFP100
封裝: PLASTIC, LQFP-100
文件頁數(shù): 27/56頁
文件大?。?/td> 382K
代理商: MB86604LPFV
33
MB86604L
(6) SCSI interface (as initiator)
Asynchronous transfer mode
(a) Input timing (target
→ initiator)
*1: The position number indicates the position in the waveform.
*2: The REQ “H”
→ ACK “L” time (tRQAK2) is compared with (tRQAKH + tAKRQL + tRQAK1) and the longer value is chosen.
Note: The input timing definition is not applied in the following cases.
When the data register is FULL in the data phase
When the final byte is being transferred
Parameter
Symbol
Value
Unit
Base signal
Position*1
Min.
Max.
REQ “H” negate time
ACK “L”
tAKRQH
A0—
ns
ACK “H” negate time
REQ “H”
tRQAKH
B
60
ns
REQ “L” assert time
ACK “H”
tAKRQL
C10
ns
Input data set up time
REQ “L”
tsuDB
D10
ns
Input data hold time
REQ “L”
thDB
E20
ns
ACK “L” assert time 1
REQ “L”
tRQAK1
F
40
ns
ACK “L” assert time 2 *2
REQ “H”
tRQAK2
G—
3 tCLK + 40
ns
A
F
Data
DB7 to DB0
DBP
G
E
REQ
ACK
C
B
D
t AKRQH
t RQAKH
t AKRQL
t RQAK1
t RQAK2
t hDB
t suDB
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