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Advanced I/O Controller with Motherboard GLUE Logic

Datasheet

PHASE

Command

Result

R/W

W

W

R

D7

0

0

D6

0

0

SENSE DRIVE STATUS

DATA BUS

D5 D4 D3

D2

D1

0

0

0

1

0

0

0

0

HDS DS1

ST3

D0

0

DS0

REMARKS

Command Codes

Status information about

FDD

PHASE

Command

R/W

W

W

W

D7

0

0

D6

0

0

D5

0

0

SEEK

DATA BUS

D4 D3

D2

0

1

1

0

0

HDS

NCN

D1

1

DS1

D0

1

DS0

REMARKS

Command Codes

Execution

Head positioned over

proper cylinder on

diskette.

PHASE

Command

R/W

W

W

W

W

D7

0

0

0

D6

0

D5

0

CONFIGURE

DATA BUS

D4

D3

D2

1

0

0

0

0

POLL

PRETRK

D1

1

D0

1

0

REMARKS

Configure

Information

0

0

EIS EFIFO

0

0

FIFOTHR

Execution

PHASE

Command

R/W

W

W

W

D7

1

0

D6

DIR

0

D5

0

0

RELATIVE SEEK

DATA BUS

D4 D3

D2

D1

0

1

1

1

0

0

HDS DS1

RCN

D0

1

DS0

REMARKS

PHASE

Command

R/W

W

D7

0

D6

0

D5

0

DUMPREG

DATA BUS

D4

D3 D2

0

1

1

D1

1

D0

0

REMARKS

*Note:

Registers

placed in

FIFO

Execution

Result

R

R

R

R

R

R

R

R

R

R

PCN-Drive 0

PCN-Drive 1

PCN-Drive 2

PCN-Drive 3

SRT

HLT

SC/EOT

0

D3

D2

D1

EIS EFIFO POLL

PRETRK

HUT

ND

D0

GAP

WGATE

FIFOTHR

LOCK

0

SMSC/Non-SMSC Register Sets (Rev.

01-11-07)

Page 60

SMSC LPC47M172

DATASHEET

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