LSI53C875 LSI Logic, LSI53C875 Datasheet - Page 219

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

Figure 6.4
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
DCMD Register
0 - Instruction Type - R/W
1 - Instruction Type - R/W
Opcode Bit 2
Opcode Bit 1
Read/Write Instruction Register
Opcode Bit 0
Operator 2
Figure 6.4
Read/Write Instructions
Operator 1
Operator 0
use data8/SFBR
A6
illustrates the Read/Write Instruction register.
A5
A4
DSPS Register
A3
A2
A1
A0
Register
Address
Immediate Data
DBC Register
Reserved (must be 0)
6-23