FDC37B78X SMSC Corporation, FDC37B78X Datasheet - Page 55

• Manufacturer Part Number: FDC37B78X
• Description: Enhanced Super I/O Controller with ACPI Support/ Real Time Clock and Consumer IR
• Manufacturer: SMSC Corporation

SC is returned if the last command that was issued was the Format command. EOT is returned if the
last command was a Read or Write.
Note: These bits are used internally only. They are not reflected in the Drive Select pins. It is the
user's responsibility to maintain correspondence between these bits and the Drive Select pins (DOR).
Command
Command
Result
Command
Result
PHASE
PHASE
PHASE
R/W
R/W
R/W
W
W
W
R
R
OW
D7
D7
LOCK
0
D7
0
D6
D6
0
0
----- Invalid Codes -----
D6
D5
0
0
PERPENDICULAR MODE
D5
D3
------- ST0 -------
0
DATA BUS
INVALID CODES
D5
D4
0
0
D4
D2
1
DATA BUS
DATA BUS
LOCK
55
D3
LOCK
D3
D1
D4
0
1
D2
D2
D0
0
D3
0
0
D1
GAP
D1
1
D2
1
0
D0
D1
WGATE
0
0
Invalid Command Codes
(NoOp - FDC goes into
Standby State)
ST0 = 80H
D0
0
D0
0
0
REMARKS
Command Codes
Command Codes
REMARKS
REMARKS