Camera interfaces
117
Alvium USB Cameras User Guide V3.1.3
Non-isolated, programmable GPIOs
GPIOs description
The camera has four non-isolated GPIOs that can be configured by software to act
as inputs or outputs.
Pin
Signal
Direction
Level
Description
1
VCC-EXT-IN
PWR IN
4.5 to 5.5 VDC
Power supply voltage
See
2
EXT-GPIO 0
IN/OUT
U
in
(low) = -0.3 to 0.8 VDC
U
in
(high) = 2.0 to 5.5 VDC
U
out
(low) = 0 to 0.4 VDC
U
out
(high) = 2.4 to 3.3 VDC at max. 12 mA
GPIOs
Internal pull-up resistor: 33 k
Ω
to 63 k
Ω
3
EXT-GPIO 1
IN/OUT
See Pin 2, EXT-GPIO 0
4
EXT-GPIO 2
IN/OUT
See Pin 2, EXT-GPIO 0
5
EXT-GPIO 3
IN/OUT
See Pin 2, EXT-GPIO 0
6
GND
PWR
0 VDC
Power supply ground
7
C-GND
PWR
0 VDC
Chassis ground and shielding
Table 50: Pin assignment of the JST BM07B-SRSS-TBT type I/O connector
I/O cables maximum length
The maximum length for I/O cables must not exceed 30 m.
Figure 56: GPIOs block diagram
Pullup
3.3V
Pad
Inpu t enable
Inpu t
Outpu t enable
Schmi
Ʃ
Schmi
Ʃ
trigger
Outpu t
GPIOs : 0 to 3
Pins: 2, 3, 4, 5
ALVIUM
CMOS
CMOS
Non-isolated GND
Pin 6
Internal
External
