LPC47B272-MS View Datasheet(PDF) - SMSC -> Microchip
Part Name
Description
MFG CO.
'LPC47B272-MS' PDF : 195 Pages View PDF
PHASE
Command
Execution for
Each Sector
Repeat:
Result
FORMAT A TRACK
DATA BUS
R/W D7 D6 D5 D4 D3 D2 D1 D0
REMARKS
W 0 MFM 0 0 1 1
0
1 Command Codes
W 0 0 0 0 0 HDS DS1 DS0
W
──────── N ────────
Bytes/Sector
W
──────── SC ────────
Sectors/Cylinder
W
─────── GPL ───────
Gap 3
W
──────── D ────────
Filler Byte
W
──────── C ────────
Input Sector Parameters
W
──────── H ────────
W
──────── R ────────
W
──────── N ────────
FDC formats an entire
cylinder
R
─────── ST0 ───────
Status information after
Command execution
R
─────── ST1 ───────
R
─────── ST2 ───────
R
────── Undefined ──────
R
────── Undefined ──────
R
────── Undefined ──────
R
────── Undefined ──────
PHASE
Command
Execution
RECALIBRATE
DATA BUS
R/W D7 D6 D5 D4 D3 D2 D1 D0
REMARKS
W 000001 1
1 Command Codes
W 0 0 0 0 0 0 DS1 DS0
Head retracted to Track 0
Interrupt.
PHASE
Command
Result
SENSE INTERRUPT STATUS
DATA BUS
R/W D7 D6 D5 D4 D3 D2 D1 D0
REMARKS
W 0 0 0 0 1 0 0 0 Command Codes
R
─────── ST0 ───────
Status information at the end
of each seek operation.
R
─────── PCN ───────
PHASE
Command
SPECIFY
DATA BUS
R/W D7 D6 D5 D4 D3 D2 D1 D0
REMARKS
W 0 0 0 0 0 0 1 1 Command Codes
W
─── SRT ───
─── HUT ───
W
────── HLT ──────
ND
PHASE
Command
Result
SENSE DRIVE STATUS
DATA BUS
R/W D7 D6 D5 D4 D3 D2 D1 D0
REMARKS
W 00000 1
0
0 Command Codes
W 0 0 0 0 0 HDS DS1 DS0
R
─────── ST3 ───────
Status information about
FDD
SMSC LPC47B27x
- 41 -
DATASHEET
Rev. 04-17-07
Share Link: 
