37C672 Datasheet, PDF (43/173 Pages) SMSC Corporation – ENHANCED SUPER I/O CONTROLLER WITH FAST IR

Enhanced Super I/O Controller with Fast IR
Datasheet
Chapter 8 Instruction Set
PHASE
Command
Execution
Result
PHASE
Command
Execution
Result
READ DATA
DATA BUS
R/W D7 D6 D5 D4 D3 D2 D1 D0
REMARKS
W MT MFM SK 0 0 1 1 0 Command Codes
W
0
0
0 0 0 HDS DS1 DS0
W
──────── C ────────
Sector ID information prior to
Command execution.
W
──────── H ────────
W
──────── R ────────
W
──────── N ────────
W
─────── EOT ───────
W
─────── GPL ───────
W
─────── DTL ───────
Data transfer between the FDD
and system.
R
─────── ST0 ───────
Status information after Com-
mand execution.
R
─────── ST1 ───────
R
─────── ST2 ───────
R
──────── C ────────
Sector ID information after Com-
mand execution.
R
──────── H ────────
R
──────── R ────────
R
──────── N ────────
READ DELETED DATA
DATA BUS
R/W D7 D6 D5 D4 D3 D2 D1 D0
REMARKS
W MT MFM SK 0 1 1 0 0 Command Codes
W
0
0
0 0 0 HDS DS1 DS0
W
──────── C ────────
Sector ID information prior to
Command execution.
W
──────── H ────────
W
──────── R ────────
W
──────── N ────────
W
─────── EOT ───────
W
─────── GPL ───────
W
─────── DTL ───────
Data transfer between the FDD
and system.
R
─────── ST0 ───────
Status information after Com-
mand execution.
R
─────── ST1 ───────
R
─────── ST2 ───────
R
──────── C ────────
Sector ID information after Com-
mand execution.
R
──────── H ────────
R
──────── R ────────
R
──────── N ────────
SMSC FDC37C672
Page 43
PRELIMINARY DATASHEET
Rev. 10-29-03