HP C30D Manual do Utilizador descarregar pdf (Página 331)

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101

Wiring Diagrams and Electrical Data 6-27

Centronics Parallel Host Interface

The Centronics Parallel host interface uses the signal definitions defined below.

Table 6-9. Centronics Parallel Signal Definitions

Signal

Name

Function

1 DS Data strobe (active low)

2 DB0 Data bit 0

3 DB1 Data bit 1

4 DB2 Data bit 2

5 DB3 Data bit 3

6 DB4 Data bit 4

7 DB5 Data bit 5

8 DB6 Data bit 6

9 DB7 Data bit 7

10 ACK Acknowledge (active low)

11 BSY Busy (active high)

12 PE Paper empty (active high)

13 SEL Select (active high)

14 AF Auto feed

15 Not used

16 SG Signal ground

17 FG Frame or chassis ground

18 PLH Peripheral logic high

19 to 30 Signal ground

31 IP INIT

32 ERR Error (active low)

33 to 35 Not used

36 SI Select input

1 2 ... 326 327 328 329 330 331 332 333 334 335 336 ... 482 483

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