w83977atg Winbond Electronics Corp America, w83977atg Datasheet - Page 36

• Manufacturer Part Number: w83977atg
• Description: W83877tf Plus Kbc, Gp I/o, Wake-up, Fir, Cir, Pb-free
• 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
-----------------------PRETRK -------------------------
0
----------------------- PCN-Drive 0--------------------
----------------------- PCN-Drive 2--------------------
0
0
----------------------- PCN-Drive 1 -------------------
----------------------- PCN-Drive 3 -------------------
0
--------SRT ------------------ | --------- HUT --------
----------- HLT -----------------------------------| ND
------------------------ SC/EOT ----------------------
0 EIS EFIFO POLL | ------ FIFOTHR --------
0
LOCK 0
D7
D7
D7
D7
D7
------------- Invalid Codes -----------------
---------------- ST3 -------------------------
-------------------- ST0 ----------------------
0
0
0
0
0
0
D6
D6
D6
D6
D6
D3
0
0
0
0
0
D5
D5
D5
D5
D3
0
D5
LOCK
D2
1
D2
D4
0
D4
0
D4
1
D4
0
D4
0
D1
D1
0
1
0
D3
0
D3
D3
0
D3
- 28 -
D3
HDS DS1 DS0
D0 GAP
D0 GAP WG
0
D2
D2
1
D2
D2
D2
1
1
0
W83977ATF/W83977ATG
D1
D1
D1
D1
0
D1
1
0
1
0
WG
D0
D0
D0
D0
D0
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
REMARKS
REMARKS
REMARKS
REMARKS
REMARKS