ST78C34IJ44 查看數據表（PDF） - Exar Corporation

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ST78C34IJ44

GENERAL PURPOSE PARALLEL PRINTER PORT WITH 83 BYTE FIFO

Exar Corporation 

ST78C34

ST78C34 REGISTER CONFIGURATIONS

A1 A0 REGISTER D7

D6

D5

D4

D3

D2

D1

D0

00

PR

PD7

PD6

PD5

PD4

PD3

PD2

PD1

PD0

01

STR

BUSY/ None

PE

SLCT ERROR Latched

1

1

-FIFO Latched

INT

full

INT

10

COM

1

1

1

INT -SLCTIN INIT -AUTO- -STROBE

enable

FDXT

10

CON

X

X

I/O

INT -SLCTIN INIT -AUTO- -STROBE

select mask

FDXT

11

AFR

FIFO

INT

enable polarity

INT

type

bit-1

INT

type

bit-0

INT

source

TIMING TIMING TIMING

select select select

bit-2

bit-1

bit-0

11

FBCR

-FIFO FBC-6 FBC-5 FBC-4 FBC-3 FBC-2 FBC-1 FBC-0

status

Rev. 3.00

6-12

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