HP TC4100 - Manual (Page 19)

17
Chapter 2 External Connectors
Parallel Port
a. All data bits are sent to a printer in an 8-bit parallel format.
b. The signal is active low.
8 Clear to send
9 Ring indicator
Table 2-3. Parallel Port Signal Description
Pin Number Signal Description Pin Number Signal Description
1 Strobe5 10
Acknowledge b
2 Data bit 06 11 Busy
3
Data bit 1 a 12 Paper end
4
Data bit 2 a 13 Select
5
Data bit 3
a 14
Auto line feed
b
6
Data bit 4
a 15 Error1
7
Data bit 5
a 16
Initialize printer
b
8
Data bit 6
a 17
Select in
b
9
Data bit 7
a 18-25 Signal ground
Table 2-2. Serial Port Signal Description
Pin Number Signal Description
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25