W83977A Winbond Electronics Corp America, W83977A Datasheet - Page 35

• Manufacturer Part Number: W83977A
• Description: Winbond I/O
• Manufacturer: Winbond Electronics Corp America

(12) Specify
(13) Seek
(14) Configure
(15) Relative Seek
Command
Execution
Command
Command
Execution
Command
PHASE
PHASE
PHASE
PHASE
R/W
R/W
R/W
R/W
W
W
W
W
W
W
R
W
W
W
W
W
W
W
D7
D7
0
0
D7
0
| ---------SRT ----------- | --------- HUT ---------- |
|------------ HLT ----------------------------------| ND
0
0
| --------------------PRETRK ----------------------- |
D7
1
0
0
| -------------------- RCN ---------------------------- |
-------------------- NCN -----------------------
0
D6
0
0
DIR
D6
EIS EFIFO POLL | ------ FIFOTHR ----|
D6
0
0
D6
0
0
0
0
D5
0
0
D5
D5
0
0
D5
0
1
0
0
D4
0
D4
D4
0
0
D4
1
0 HDS DS1 DS0
0
0
0
D3
D3
D3
0
1
-27 -
D3
1
HDS DS1 DS0
0
0
0
1
D2
D2
D2
D2
1
0
1
1
1
D1
D1
D1
D1
1
0
1
1
1
D0
D0
D0
D0
Publication Release Date: April 1998
Command codes
Command codes
Head positioned over proper
cylinder on diskette
Configure information
Internal registers written
Command codes
W83977TF
REMARKS
REMARKS
REMARKS
PRELIMINARY
REMARKS
Revision 0.62