LSI53C875 LSI Logic, LSI53C875 Datasheet - Page 224

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

Figure 6.5
6-28
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 - Transfer Control
1 - Instruction Type - Transfer Control
Opcode Bit 2
Opcode Bit 1
Transfer Control Instructions
Opcode Bit 0
MSG
Instruction Set of the I/O Processor
C/D
I/O
Relative Addressing Mode
0 (Reserved)
Carry Test
Interrupt on the Fly
DSPS Register
Jump if: True=1, False=0
Compare Data
Compare Phase
Wait for Valid Phase
Mask for Compare
DBC Register
Data to be compared
with the SCSI First
Byte Received