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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
Pin
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