Parallel Port Interface - Unisys Aquanta CP Series Configuration Manual

Parallel Port Interface

The SMC FDC37C935 Super I/O Controller supports the parallel port. One Centronics
compatible parallel interface is provided with a 25-pin, D-type, female connector.
Also, ECP (Enhanced Compatibility Port) and EPP multi-mode bi-directional parallel
port functions are supported.
Pin Signal
(SPP,ECP)
Mode
1 STB#
2 LP_D0
3 LP_D1
4 LP-D2
5 LP_D3
6 LP_D4
7 LP_D5
8 LP_D6
9 LP_D7
10 ACK#
11 BUSY
12 PE
13 SLCT
14 AUTOFD#
15 ERROR#
16 INIT#
17 SLCTIN#
18 GND
3814 9779–000
Table A–6. Parallel Port Parameters
Pin
Direction
Bi-directional Write#
Bi-directional LP_D0
Bi-directional LP_D1
Bi-directional LP_D2
Bi-directional LP-D3
Bi-directional LP_D4
Bi-directional LP_D5
Bi-directional LP_D6
Bi-directional LP_D7
Input ACK#
Input BUSY
Input PE
Input SLCT
Bi-directional DSTRB#
Input ERROR#
Bi-directional INIT#
Bi-directional ASTRB#
System Specifications
Signal Pin
EPP Mode Direction
Bi-directional
Bi-directional
Bi-directional
Bi-directional
Bi-directional
Bi-directional
Bi-directional
Bi-directional
Bi-directional
Input
Input
Input
Input
Bi-directional
Input
Bi-directional
Bi-directional
continued
A–9