Installing An External Parallel Printer - Texas Instruments Extensa 660 Series Maintenance Manual

2.4.2 Installing an External Parallel Printer

The Notebook is equipped with an external, bidirectional, ECC/EPP compatible, 25-pin
parallel printer port. The connector pinouts and connector location are shown in
Figure 2-5.
PARALLEL PORT PINOUTS
PIN SIGNAL
Strobe*
1
Data Bit 0
2
Data Bit 1
3
Data Bit 2
4
Data Bit 3
5
6
Data Bit 4
Data Bit 5
7
Data Bit 6
8
Data Bit 7
9
Acknowledge*
10
Busy
11
Paper Out
12
Select
13
Auto Line Feed*
14
Error*
15
Initialize Printer*
16
Select In*
17
LPT 18
18
VCC
19
PLP120
20
PLP121
21
22 PLP122
FDD 5V
23
24 LP125
25 Ground
* Denotes
Note:
Active Low
2-8 Installation
SPP MODE
STB*
PD0
PD1
PD2
PD3
PD4
PD5
PD6
PD7
ACK*
BUSY
PE
SLCT
AFD*
ERR*
INIT*
SLIN*
LPT18
VCC
PLP120
PLP121
PLP122
13
FDD 5V
LP125
Ground
25
Figure 2-5 Parallel Port Pinouts
11 9
12 10 7
8 6
24 19
23 22 21 20
3 2
5 1
4
18 17 16
15 14