W83977F Datasheet, PDF (41/181 Pages) Winbond – PLUG & PLAY 1.0A COMPLIANT

W83977F/ W83977AF
PRELIMINARY
(16) Dumpreg
PHASE R/W D7 D6 D5 D4 D3 D2 D1 D0
Command W
000 01 1 10
Result
R
----------------------- PCN-Drive 0--------------------
R
----------------------- PCN-Drive 1 -------------------
R
----------------------- PCN-Drive 2--------------------
R
----------------------- PCN-Drive 3 -------------------
R
--------SRT ------------------ | --------- HUT --------
R
----------- HLT -----------------------------------| ND
R
------------------------ SC/EOT ----------------------
R
LOCK 0 D3 D2 D1 D0 GAP WG
R
0 EIS EFIFO POLL | ------ FIFOTHR --------
R -----------------------PRETRK -------------------------
(17) Perpendicular Mode
PHASE R/W D7 D6 D5 D4 D3 D2 D1 D0
Command W
0 0 010 01 0
W OW 0 D3 D2 D1 D0 GAP WG
REMARKS
Registers placed in FIFO
REMARKS
Command Code
(18) Lock
PHASE
Command
Result
R/W D7 D6 D5 D4 D3 D2 D1 D0
W LOCK 0 0 1 0 1 0 0
R 0 0 0 LOCK 0 0 0 0
REMARKS
Command Code
(19) Sense Drive Status
PHASE R/W D7 D6 D5 D4 D3 D2 D1 D0
Command W
00 0 00 10 0
W
0 0 0 0 0 HDS DS1 DS0
Result
R
---------------- ST3 -------------------------
REMARKS
Command Code
Status information about
disk drive
(20) Invalid
PHASE R/W D7 D6 D5 D4 D3 D2 D1 D0
REMARKS
Command W
------------- Invalid Codes -----------------
Invalid codes (no
operation- FDC goes to
standby state)
Result
R
-------------------- ST0 ----------------------
ST0 = 80H
Publication Release Date: March 1998
-30-
Revision 0.58