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LSI
53C875A
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LSI 53C875A 用户手册
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标准
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328
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A-4
Register Summary
Remaining Byte Count (RBC)
0xC8–0xCB
Read/Write
4-105
Reserved
0x53
–
4-94
Reserved
0x5A–0x5B
–
4-99
Reserved
0xBC–0xBF
–
4-103
Reserved
0xDB
–
4-108
Reserved
0xE0–0xFF
–
4-108
Response ID One (RESPID1)
0x4B
Read/Write
4-86
Response ID Zero (RESPID0)
0x4A
Read/Write
4-86
Scratch Byte Register (SBR)
0x3A
Read/Write
4-70
Scratch Register A (SCRATCHA)
0x34–0x37
Read/Write
4-65
Scratch Register B (SCRATCHB)
0x5C–0x5F
Read/Write
4-99
Scratch Registers C–R (SCRATCHC–SCRATCHR) 0x60–0x9F
Read/Write
4-99
SCRIPTS Fetch Selector (SFS)
0xA8–0xAB
Read/Write
4-101
SCSI Bus Control Lines (SBCL)
0x0B
Read Only
4-38
SCSI Bus Data Lines (SBDL)
0x58–0x59
Read Only
4-98
SCSI Byte Count (SBC)
0xD8–0xDA
Read Only
4-107
SCSI Chip ID (SCID)
0x04
Read/Write
4-30
SCSI Control One (SCNTL1)
0x01
Read/Write
4-23
SCSI Control Three (SCNTL3)
0x03
Read/Write
4-28
SCSI Control Two (SCNTL2)
0x02
Read/Write
4-26
SCSI Control Zero (SCNTL0)
0x00
Read/Write
4-20
SCSI Destination ID (SDID)
0x06
Read/Write
4-35
SCSI First Byte Received (SFBR)
0x08
Read/Write
4-36
SCSI Input Data Latch (SIDL)
0x50–0x51
Read Only
4-93
SCSI Interrupt Enable One (SIEN1)
0x41
Read/Write
4-75
Table A.2
LSI53C875A SCSI Register Map (Cont.)
Register Name
Address
Read/Write
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