Rs-232 And Rs-485; Ttl Uart - Cherry RINGNECK SOM-PX30-uQ7 User Manual

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3.7 RS-232 and RS-485

To connect via RS-232 or RS-485, connect to the RS232 / RS485 jack on the base board.
UART1
RS232
RS485
The switch labeled RS-232 / RS-485 selects between RS-232 and RS-485 mode on the jack.
In RS-485 mode, the switch labeled Full Duplex / Half Duplex selects full- or half-duplex mode, respec-
tively. It has no effect in RS-232 mode, which is always full-duplex.

3.8 TTL UART

UART0 and UART1 are also available through the pin headers P12 UART0 and P30 UART1 next to the RS232 /
RS485 jack. The signal level is 3.3V.
RINGNECK SOM-PX30-uQ7 User Manual
© Cherry Embedded Solutions GmbH
UART0
FULL/HALF
DUPLEX
Fig. 3.5: RS-232 connector
v1.3.1
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