w83877atd Winbond Electronics Corp America, w83877atd Datasheet - Page 31

• Manufacturer Part Number: w83877atd
• Description: Winbond I/o
• Manufacturer: Winbond Electronics Corp America

(16) Dumpreg
(17) Perpendicular Mode
(18) Lock
(19) Sense Drive Status
(20) Invalid
Command
Command
Command
Result
Command
Command
PHASE
PHASE
PHASE
PHASE
PHASE
Result
Result
Result
R/W
R/W
R/W
R/W
R/W
W
W
W
W
W
W
W
R
R
R
R
R
R
R
R
R
R
R
R
R
LOCK
D7
LOCK
OW
D7
D7
D7
------------ HLT -------------------------------------| ND
0
0
D7
0
0
0
0
-------- SRT ----------- | -------- HUT ----------
-------------------- PCN-Drive 0-----------------
-------------------- PCN-Drive 2-----------------
--------------------PRETRK ---------------------
-------------------- PCN-Drive 1 ----------------
-------------------- PCN-Drive 3 ----------------
-------------------- SC/EOT --------------------
EIS
D6
------------- Invalid Codes -----------------
---------------- ST3 -------------------------
D6
D6
D6
-------------------- ST0 ----------------------
0
0
0
0
0
D6
0
0
0
EFIFO POLL|
D5
D3
D5
D5
D5
0
D3
0
0
0
D5
0
0
D2
D4
D4
D4
D4
0
D2
1
0
0
LOCK
D4
1
D1
D3
D3
D3
D3
1
D1
0
0
0
D3
--- FIFOTHR ---- |
0
0
- 27 -
D0
D2
HDS
D2
D2
D2
D0
1
0
1
D2
1
0
GAP WG
D1
GAP
DS1
D1
D1
D1
1
1
0
D1
0
0
Publication Release Date: April 1998
D0
DS0
WG
D0
D0
D0
0
0
0
D0
0
0
Registers placed in FIFO
Command code
Command code
Status information about
disk drive
Invalid codes (no operation -
FDC goes into standby state)
ST0 = 80H
Command code
W83877ATF
REMARKS
REMARKS
REMARKS
REMARKS
REMARKS
Version 0.51