10 Appendix
3DPIXA
CD40131 Version 1
97 / 99
10.2.5 Digital IO-port
The connection to the digital I/O interface (x5) of the 3DPIXA camera is established with a 15-
pin D-Sub connector (male). Other functions are selectable at the IO-configurator in the CST.
Pin Level
Name
Default connection
1
RS422
GPIO_P0 (input)
Incremental encoder (high)
2
RS422
GPIO_P1 (input)
Light barrier (high)
3
LVCMOS
GPIO_P4
With CP000470 dual cameras this pin is used for
the Master/Slave definition (bridge to pin 11, see
chapter 10.2.1, p. 95). With other cameras this pin
can be used for light barriers:
CP000470 models:
V
in, max
= 3.6 V
CP000520 models:
V
in, max
= 5.0 V
4
LVCMOS
GPIO_P2
Reserved for customized applications
5
3.3 V over 100 Ohm
Power
Output
6
LVCMOS
GPIO_P3
Master/Slave interface
7
0 V
Ground
–
8
LVCMOS
GPIO_N4
Master/Slave interface
9
RS422
GPIO_N0
Incremental encoder (low)
10
RS422
GPIO_N1
Light barrier (low)
11
0 V
Ground
–
12
LVCMOS
GPIO_N2
Reserved for customized applications
13
0 V
Ground
–
14
LVCMOS
GPIO_N3
Reserved for customized applications
15
5 V over 100 Ohm
Power supply
Output
Tab. 27: Pin assignment of the I/O connector
Power supply: With 100 Ohm series resistor
RS422:
RS422 standard
LVCMOS:
With 10 Ohm series resistor
LVCMOS and RS422 levels
V
IL
V
IH
V
OL
V
OH
I/O standard
V
min
V
max
V
min
V
max
V
max
V
min
LVCMOS
–0.5
0.7
1.7
3.6
0.4
2.1
RS422
–6.0
0.8
2.0
6.0
–
–
Tab. 28: LVCMOS and RS422 levels
Maximum input level of the LVCMOS is 3.6 V (except pin 3 of CP000520 models with
max. 5.0 V).
Use a level converter, if necessary (e.g. 74 LVC14).
Non-compliance can result in irreparable damages to the camera.
