w83977tf Winbond Electronics Corp America, w83977tf Datasheet - Page 36

• Manufacturer Part Number: w83977tf
• Description: Winbond I/o
• Manufacturer: Winbond Electronics Corp America

(16) Dumpreg
(17) Perpendicular Mode
(18) Lock
(19) Sense Drive Status
(20) Invalid
Command
Result
Command
Command
Result
Command
Result
Command
Result
PHASE
PHASE
PHASE
PHASE
PHASE
R/W
R/W
R/W
R/W
R/W
W
W
W
W
R
R
R
R
R
R
R
R
R
R
R
W
W
W
R
R
LOCK 0
OW
D7
D7
D7
D7
-----------------------PRETRK -------------------------
0
D7
0
0
0
----------------------- PCN-Drive 0--------------------
----------------------- PCN-Drive 2--------------------
----------------------- PCN-Drive 1 -------------------
----------------------- PCN-Drive 3 -------------------
--------SRT ------------------ | --------- HUT --------
----------- HLT -----------------------------------| ND
------------------------ SC/EOT ----------------------
0
0 EIS EFIFO POLL | ------ FIFOTHR --------
LOCK 0 D3 D2 D1 D0 GAP WG
------------- Invalid Codes -----------------
---------------- ST3 -------------------------
-------------------- ST0 ----------------------
0
0
D6
D6
D6
0
D6
0
D6
0
0
D3
0 LOCK 0
0
0
0
0
D5
D5
D5
D5
D5
0
D2
1
0
1
0
0
D4
D4
D4
D4
D4
0 HDS DS1 DS0
D1 D0 GAP WG
0
1
0
0
D3
D3
D3
D3
-28-
D3
1
0
1
1
0
D2
D2
D2
D2
D2
1
0
0
1
0
D1
D1
D1
D1
D1
0
0
0
0
0
D0
D0
D0
D0
D0
Publication Release Date: April 1998
Invalid codes (no operation-
FDC goes to standby state)
ST0 = 80H
Command Code
Status information about
disk drive
Command Code
Command Code
Registers placed in FIFO
W83977TF
REMARKS
REMARKS
REMARKS
REMARKS
PRELIMINARY
REMARKS
Revision 0.62