Parallel (IEEE1284) Interface

￿Pin assignment

PIN No.

Direction

 

Function

 

Compatibility Mode

Nibble Mode

Byte Mode

 

 

1

Input

*Strobe

HostCLK

HostCLK

2

Input/Output

Data0

Data0

Data0

3

Input/Output

Data1

Data1

Data1

4

Input/Output

Data2

Data2

Data2

5

Input/Output

Data3

Data3

Data3

6

Input/Output

Data4

Data4

Data4

7

Input/Output

Data5

Data5

Data5

8

Input/Output

Data6

Data6

Data6

9

Input/Output

Data7

Data7

Data7

10

Output

*ACK

PtrCLK

PtrCLK

11

Output

BUSY

PtrBUSY/Data3,7

PtrBUSY

12

Output

PE

AckDataReq/Data2,6

AckDataReq

13

Output

SELECT

Xflag/Data1,5

Xflag

14

Input

*AutoFeed

HostBUSY

HostBUSY

15

–

(NC)

(ND)

(ND)

16

–

GND

GND

GND

17

–

FG

FG

FG

18

Output

Logic-H

Logic-H

Logic-H

19–30

–

GND

GND

GND

31

Input

*INIT

*INIT

*INIT

32

Output

*FAULT

*DataAvail/Data0,4

*DataAvail

33

–

GND

(ND)

(ND)

34

Output

DK_STATUS

(ND)

(ND)

35

Output

+5V

(ND)

(ND)

36

Input

*Select-in

1284-Active

1284-Active

 

 

 

 

(*: Active Low)

￿Data Reception Timing

Data 1–8

 

 

 

 

 

 

 

 

 

 

 

 

 

A

 

 

C

 

 

 

 

B

 

A : MIN. 1∝s

 

 

 

 

 

 

 

 

 

∗STROBE

 

 

 

 

 

 

 

 

B : MIN. 1∝s

 

 

 

 

 

 

 

 

 

 

 

C : MIN. 1∝s

 

 

 

D

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

D : MAX. 1∝s

BUSY

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

E : Approx. 3.2∝s

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

E F

 

 

F : Approx. 3.2∝s

∗ACK

 

 

 

 

 

 

 

 

 

esAppendix

49