Venice Single Board Computer Operating Manual
○ 1 = Half Duplex for RS485
Pin
RS232 Signal
RS422/485
Half Duplex
RS422/485
Full Duplex
1
Transmit Data 4 (output)
CPU UART4 TXD
Transmit/Receive Data-
Transmit Data-
2
Receive Data 4 (input)
CPU UART4 RXD
Reserved
Receive Data+
3
Transmit Data 2 (output)
CPU UART2 TXD
or
CPU GPIO[5]:DIO[29] as
RS232 RTS
Transmit/Receive Data+
Transmit Data+
4
Receive Data 2 (input)
CPU UART2 RXD
or
CPU GPIO[5]:DIO[28] as
RS232 CTS
Reserved
Receive Data-
5
Ground
Ground
Ground
Software Programmable RS232/422/485 Serial Port Connector
5V Fan Speed Control (J12)
A programmable 5V power rail is available through a latching 4-pin connector in a 1x4
configuration with 1.25mm pin spacing. The mating connector is a Hirose
DF13-4S-1.25C, available from Digi-Key as part number H2181-ND. The mating
connector pins are Hirose DF13-2630SCF, available from Digi-Key as part number
H9992CT-ND.
Pin
Signal
1
5V
2
Gateworks System Controller - Fan Control Output
3
Gateworks System Controller - Tachometer Input
4
Ground
Fan Speed Control Connector
External Tamper Switch (J13)
The tamper switch signals are available through a latching 2-pin connector in a 1x2
configuration with 2mm pin spacing. The mating connector is a JST PAP-02V-S,
available from Digi-Key as part number 455-1486-ND. The mating connector pins are
JST SPHD-002T-P05, available from Digi-Key as part number 455-1313-1-ND.
Pin
Signal
1
Gateworks System Controller
Tamper Switch Input
2
Ground
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