LSI53C875 LSI Logic, LSI53C875 Datasheet - Page 299

• Manufacturer Part Number: LSI53C875
• Description: PCI to Ultra SCSI I/O Processor
• Manufacturer: LSI Logic

Table A.2
Register Name
DMA Interrupt Enable (DIEN)
DMA Mode (DMODE)
DMA Next Address (DNAD)
DMA SCRIPTS Pointer (DSP)
DMA SCRIPTS Pointer Save
(DSPS)
DMA Status (DSTAT)
General Purpose (GPREG)
General Purpose Pin Control
(GPCNTL)
Interrupt Status (ISTAT)
Memory Access Control (MACNTL) 0x46 (0xC6)
Response ID One (RESPID1)
Response ID Zero (RESPID0)
Scratch Byte Register (SBR)
Scratch Register A (SCRATCHA)
Scratch Register B (SCRATCHB)
Scratch Registers C–J
(SCRATCHC–SCRATCHJ)
SCSI Bus Control Lines (SBCL)
SCSI Bus Data Lines (SBDL)
SCSI Chip ID (SCID)
SCSI Control One (SCNTL1)
SCSI Control Three (SCNTL3)
SCSI Control Two (SCNTL2)
SCSI Control Zero (SCNTL0)
LSI53C875 Register Map (Cont.)
Register Summary
Address
(Memory or I/O) (Config. Memory or I/O) Read/Write Page
0x39 (0xB9)
0x38 (0xB8)
0x28–0x2B (0xA8–0xAB)
0x2C–0x2F (0xAC–0xAF)
0x30–0x33 (0xB0–0xB3)
0x0C (0x8C)
0x07 (0x87)
0x47 (0xC7)
0x14 (0x94)
0x4B (0xCB)
0x4A (0xCA)
0x3A (0xBA)
0x34–0x37 (0xB4–0xB7)
0x5C–0x5F (0xDC–0xDF)
0x60–0x7F (0xE0–0xFF)
0x0B (0x8B)
0x58–0x59 (0xD8–0xD9)
0x04 (0x84)
0x01 (0x81)
0x03 (0x83)
0x02 (0x82)
0x00 (0x80)
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read Only
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read Only
Read Only
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
5-50
5-47
5-45
5-46
5-46
5-23
5-19
5-63
5-31
5-62
5-70
5-69
5-51
5-47
5-79
5-79
5-22
5-78
5-14
5-6
5-12
5-9
5-3
A-3