A serial port visible as /dev/ttyAMA0 is available on the RJ45 connector described below.
The physical interface used is a Max Linear SP335 IC
that can be configured alternatively via dip-switch as:
RS232 port at ±12 volt
RS485 half duplex
RS422 full duplex
Please take care and don't plug here the Ethernet cable to avoid board damages.
Some GPIO lines are available for user purpose on two 8x2 pin headers pitch 2.54mm
On these pins are also available the power supply lines at 5VDC and 3.3VDC. The signals level
of any logic line is 3.3 volt. Don't plug boards with 5 volt line voltage to avoid damage to the
Raspberry Pi CM3 module.
Seedstudio Grove, Sparkfun QWIIC and Acme Systems A-BUS connectors
Up to three serial connection systems can be used with the CM3-Panel-7-POE. This feature
enable the use of a wide ecosystem of small modules
Acme Systems srl
Electronic design and manufacturing since 2005
Via Aldo Moro 53 - 00055 Ladispoli (RM) - Italy
VAT / Partita IVA / Codice Fiscale: IT 08114831004 Codice SDI: T04ZHR3
email: firstname.lastname@example.org - PEC: email@example.com - Tel: +39.06.99.12.187 - Fax: +39.06.622.765.31
Iscritta al Registro delle Imprese di Roma al n. 08114831004 - REA: RM-1074631