User`s guide

T-MOPSlcdSA User's Guide
Parallel-Communication Interface 20
20
10. Parallel-Communication Interface
The T-MOPSlcdSA incorporates an IBM XT/AT compatible parallel port. It can be set to bi-
directional and supports EPP and ECP operating modes. The bi-directional functions are compatible
with those of an IBM PS/2 style parallel port. This functionality is always available and does not
conflict with printer use.
10.1 Connector
The parallel port is available through the X1 connector (26 pins). To find the location of this
connector on the T-MOPSlcdSA board, please see the chapter “Connector Locations”.
To have the signals available on a standard, parallel-interface connector DSUB-25, an adapter
cable is required. For adapter cable information see the section “Connector Functions and
Interface Cables”.
Pin-out table and necessary connections for a DSUB-25 adapter:
Header Pin Signal Name Function In / Out DSUB-25
1 /STB Strobe Out 1
3 PD0 Data 0 I/O 2
5 PD1 Data 1 I/O 3
7 PD2 Data 2 I/O 4
9 PD3 Data 3 I/O 5
11 PD4 Data 4 I/O 6
13 PD5 Data 5 I/O 7
15 PD6 Data 6 I/O 8
17 PD7 Data 7 I/O 9
19 /ACK Acknowledge In 10
21 BUSY Busy In 11
23 PE Paper out In 12
25 SLCT Select out In 13
2 /AFD Autofeed Out 14
4 /ERR Error In 15
6 /INIT Init Out 16
8 /SLIN Select in Out 17
26 VCC (*) + 5 V -- NC
10,12 GND Signal Ground -- 18 - 25
14,16 GND Signal Ground -- 18 - 25
18,20 GND Signal Ground -- 18 - 25
22,24 GND Signal Ground -- 18 - 25
Notes:
(*) To protect the external power lines of peripheral devices, make sure that:
-- the wires have the right diameter to withstand the maximum available current
-- the enclosure of the peripheral device fulfils the fire-protecting requirements of IEC/EN
60950.