LSI 53C875A User Manual
SCSI Registers
4-19
Table 4.2
SCSI Register Address Map
31
16 15
0
SCNTL3
SCNTL2
SCNTL1
SCNTL0
0x00
GPREG0
SDID
SXFER
SCID
0x04
SBCL
SSID
SOCL
SFBR
0x08
SSTAT2
SSTAT1
SSTAT0
DSTAT
0x0C
DSA
0x10
MBOX1
MBOX0
ISTAT1
ISTAT0
0x14
CTEST3
CTEST2
CTEST1
CTEST0
0x18
TEMP
0x1C
CTEST6
CTEST5
CTEST4
DFIFO
0x20
DCMD
DBC
0x24
DNAD
0x28
DSP
0x2C
DSPS
0x30
SCRATCH A
0x34
DCNTL
SBR
DIEN
DMODE
0x38
ADDER
0x3C
SIST1
SIST0
SIEN1
SIEN0
0x40
GPCNTL0
MACNTL
SWIDE
SLPAR
0x44
RESPID1
RESPID0
STIME1
STIME0
0x48
STEST3
STEST2
STEST1
STEST0
0x4C
Reserved
STEST4
SIDL
0x50
CCNTL1
CCNTL0
SODL
0x54
Reserved
Reserved
SBDL
0x58
SCRATCH B
0x5C
SCRATCH C–SCRATCH R
0x60–0x9F
MMRS
0xA0
MMWS
0xA4
SFS
0xA8
DRS
0xAC
SBMS
0xB0
DBMS
0xB4
DNAD64
0xB8
Reserved
0xBC
PMJAD1
0xC0
PMJAD2
0xC4
RBC
0xC8
UA
0xCC
ESA
0xD0
IA
0xD4
Reserved
SBC
0xD8
CSBC
0xDC
Reserved
0xE0–0xFF