FDC37B727-NS Standard Microsystems (SMSC), FDC37B727-NS Datasheet - Page 52

• Manufacturer Part Number: FDC37B727-NS
• Manufacturer: Standard Microsystems (SMSC)

Specifications of FDC37B727-NS

• Pin Count: 128
• Lead Free Status / RoHS Status: Compliant

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
D7
OW
D7
LOCK
0
D7
0
D6
D6
0
0
----- Invalid Codes -----
D6
D5
0
0
PERPENDICULAR MODE
D5
D3
0
------- ST0 -------
DATA BUS
INVALID CODES
D5
D4
0
0
D4
D2
1
DATA BUS
DATA BUS
LOCK
D3
LOCK
52
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 Stand-
by State)
ST0 = 80H
D0
0
D0
0
0
REMARKS
Command Codes
Command Codes
REMARKS
REMARKS