Z53C80SCSI ZILOG [Zilog, Inc.], Z53C80SCSI Datasheet - Page 19

• Manufacturer Part Number: Z53C80SCSI
• Description: SMALL COMPUTER SYSTEM INTERFACE (SCSI)
• Manufacturer: ZILOG [Zilog, Inc.]

PS97SCC0200
Z
READ REGISTERS
Address: 0
Address: 1
Address: 2
ILOG
D7 D6 D5 D4 D3 D2 D1 D0
D7 D6 D5 D4 D3 D2 D1 D0
D7 D6 D5 D4 D3 D2 D1 D0
Figure 27. Current SCSI Data Register
Figure 28. Initiator Command Register
Figure 29. Mode Register
(Read Only)
(Read Only)
(Read Only)
Assert Data Bus
Assert /ATN
Assert /SEL
Assert /BSY
Assert /ACK
Lost Arbitration
Arbitration in Progress
Assert /RST
Arbitrate
DMA Mode
Monitor /BSY
Enable /EOP Interrupt
Enable Parity Interrupt
Enable Parity Checking
Target Mode
"0"
/DB0
/DB1
/DB2
/DB3
/DB4
/DB5
/DB6
/DB7
Address: 3
Address: 4
Address: 5
D7 D6 D5 D4 D3 D2 D1 D0
D7 D6 D5 D4 D3 D2 D1 D0
D7 D6 D5 D4 D3 D2 D1 D0
Figure 31. Current SCSI Bus Status Register
Figure 30. Target Command Register
Figure 32. Bus and Status Register
(Read Only)
(Read Only)
(Read Only)
/ACK
/ATN
Busy Error
Phase Match
Interrupt Request Active
Parity Error
DMA Request
End of DMA
/DBP
/SEL
I//O
C//D
/MSG
/REQ
/BSY
/RST
Assert I//O
Assert C//D
Assert /MSG
Assert /REQ
"0"
Last Byte Sent
Z53C80 SCSI
19