HT6576A データシートの表示（PDF） - Holtek Semiconductor
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HT6576A Datasheet PDF : 14 Pages
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HT6576A
Address 5: Bus And Status
READ
7
6
5
4
END
DMA PARITY
DMA REQUEST ERROR
IRQ
3
2
1
PHASE
MATCH
BUS ERROR
ATN
0
ACK
WRITE
–START DMA SEND
7
6
5
4
3
2
1
0
X
X
X
X
X
X
X
X
Address 6: Input Data
READ
7
6
LDB7
LDB6
5
LDB5
4
LDB4
3
LDB3
2
LDB2
1
LDB1
0
LDB0
LATCH SCSI DATA. The register represent the complement of the active low SCSI data bus.
WRITE
–START DMA TARGET RECEIVE
7
6
5
4
3
2
1
0
X
X
X
X
X
X
X
X
Address 7:
READ
–RESET PARITY/INTERRUPT
7
6
5
4
3
2
1
0
X
X
X
X
X
X
X
X
WRITE
–START DMA INITIATOR RECEIVE
7
6
5
4
3
2
1
0
X
X
X
X
X
X
X
X
6
14th July ’97
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