w83977atf Winbond Electronics Corp America, w83977atf Datasheet - Page 31

• Manufacturer Part Number: w83977atf
• 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
-----------------------PRETRK -------------------------
D7
D7
0
D7
----------------------- PCN-Drive 0--------------------
----------------------- PCN-Drive 2--------------------
----------------------- PCN-Drive 1 -------------------
----------------------- PCN-Drive 3 -------------------
--------SRT ------------------ | --------- HUT --------
0 EIS EFIFO POLL | ------ FIFOTHR --------
0
0
----------- HLT -----------------------------------| ND
------------------------ SC/EOT ----------------------
LOCK 0
0
0
------------- Invalid Codes -----------------
---------------- ST3 -------------------------
-------------------- ST0 ----------------------
D6
D6
D6
D6
0
0
D6
0
0
0
0
D3
D5
0
D5
D5
D5
D5
0
D3
0
0
0
0
LOCK
D2
D4
D4
D4
D4
D4
D2
1
0
0
0
1
D1
-30-
D3
0
D3
D3
D3
D3
D1
0
0
1
0
0
HDS DS1 DS0
D0 GAP
D0 GAP WG
D2
D2
D2
D2
D2
1
0
1
1
0
D1
D1
D1
D1
D1
0
0
1
0
1
WG
D0
D0
D0
D0
D0
Publication Release Date: April 1998
0
0
0
0
0
Invalid codes (no
operation- FDC goes to
standby state)
ST0 = 80H
Command Code
Command Code
Status information about
disk drive
Command Code
Registers placed in FIFO
W83977ATF
PRELIMINARY
REMARKS
REMARKS
REMARKS
REMARKS
REMARKS
Revision 0.52