HP C30 manual Centronics Parallel Host Interface

Centronics Parallel Host Interface

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

Table 6-9. Centronics Parallel Signal Definitions

Pin	Signal	Function
	Name
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

Wiring Diagrams and Electrical Data 6-27