w83977ag Winbond Electronics Corp America, w83977ag Datasheet - Page 28

• Manufacturer Part Number: w83977ag
• Description: W83977f With 3rd Uart For Ir, Pb-free
• Manufacturer: Winbond Electronics Corp America

ND:
OW:
PCN:
POLL:
PRETRK:
R:
RCN:
R/W:
SC:
SK:
SRT:
ST0:
ST1:
ST2:
ST3:
WG:
(1) Read Data
Command
Execution
Result
PHASE
W83977F-A/ W83977G-A/ W83977AF-A/ W83977AG-A
Non-DMA Mode
Overwritten
Present Cylinder Number
Precompensation Start Track Number
Record
Relative Cylinder Number
Read/Write
Sector/per cylinder
Skip deleted data address mark
Step Rate Time
Status Register 0
Status Register 1
Status Register 2
Status Register 3
Write gate alters timing of WE
R/W
W
W
W
W
W
W
W
W
W
R
R
R
R
R
R
R
MT MFM
0
Polling Disable
D7
-------------------- EOT -----------------------
-------------------- GPL -----------------------
-------------------- DTL -----------------------
-------------------- ST0 -----------------------
-------------------- ST1 -----------------------
-------------------- ST2 -----------------------
---------------------- C ------------------------
---------------------- H ------------------------
---------------------- R ------------------------
---------------------- N ------------------------
---------------------- C ------------------------
---------------------- H ------------------------
---------------------- R ------------------------
---------------------- N ------------------------
0
D6
SK
0
D5
D4
0
0
D3
0
0
-20
HDS DS1 DS0
D2
1
D1
1
D0
0
Command codes
Sector ID information prior
to command execution
Data transfer between the
FDD and system
Status information after
command execution
Sector ID information after
command execution
REMARKS