Seco SM-C12 User Manual page 29

I2C_GP_DAT: I2C General Purpose data signal. Bi-Directional between the module to the Carrier board, electrical level +1.8V_S
3.2.1.9 Asynchronous Serial Ports (UART) interface signals
All UART interface signals are directly managed by the i.MX 8M processor. In all versions, the edge connector offers the three following UART interfaces.
SER0_TX: UART #2 Interface, Serial data Transmit (output) line, +1.8V_S electrical level
SER0_RX: UART #2 Interface, Serial data Receive (input) line, +1.8V_S electrical level
SER0_RTS#: UART #2 Interface, Handshake signal, Request to Send (output) line, +1.8V_S electrical level
SER0_CTS#: UART #2 Interface, Handshake signal, Clear to Send (Input) line, +1.8V_S electrical level
SER1_TX: UART #1 Interface, Serial data Transmit (output) line, +1.8V_S electrical level
SER1_RX: UART #1 Interface, Serial data Receive (input) line, +1.8V_S electrical level
SER3_RX: UART #3 Interface, Serial data Receive (input) line, +1.8V_S electrical level
SER3_TX: UART #3 Interface, Serial data Transmit (output) line, +1.8V_S electrical level
A fourth UART interface is present only when the module is without the optional onboard WLAN combo module:
SER2_TX: UART #4 Interface, Serial data Transmit (output) line, +1.8V_S electrical level
SER2_RX: UART #4 Interface, Serial data Receive (input) line, +1.8V_S electrical level
SER2_RTS#: UART #4 Interface, Handshake signal, Request to Send (output) line, +1.8V_S electrical level
SER2_CTS#: UART #4 Interface, Handshake signal, Clear to Send (Input) line, +1.8V_S electrical level.
Please consider that interface is at +1.8V_S electrical level; therefore, please evaluate well the typical scenario of application. If there isn't any explicit need of
interfacing directly at +1.8V_S level, for connection to standard serial ports commonly available (like those offered by common PCs, for example) it is mandatory to
include an RS-232 transceiver on the carrier board.
3.2.1.10 CAN interface signals
CAN0_TX: CAN Transmit Output for CAN Bus Channel 0. +1.8V_S electrical voltage level signal.
CAN0_RX: CAN Receive Input for CAN Bus Channel 0. +1.8V_S electrical voltage level signal.
The CAN interface is managed by an onboard Microchip Technology MCP2517FDT-H/JHA CANbus Controller.
Please consider that it is not possible to connect the SMARC CAN interface to any CAN Bus directly, it is necessary to integrate a CAN Bus Transceiver in the Carrier
board.
SM-C12
SM-C12 User Manual - Rev. First Edition: 1.0 - Last Edition: 1.0 - Authors: S.B. and L.G - Reviewed by N.P. - Copyright © 2019 SECO S.p.A.
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