FDC37B77X SMSC Corporation, FDC37B77X Datasheet - Page 51

• Manufacturer Part Number: FDC37B77X
• Description: ENHANCED SUPER I/O CONTROLLER WITH WAKE UP FEATURES
• 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
D6
D5
0
0
PERPENDICULAR MODE
D5
D3
0
Invalid Codes
DATA BUS
INVALID CODES
D5
D4
0
0
D4
D2
1
ST0
DATA BUS
DATA BUS
LOCK
D3
LOCK
51
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