Expansion Connector - Seco SBC-C23 User Manual

3.3.13 Expansion connectors

Expansion Connector #1

CN59
Pin Signal
1 VCC_OUT_5V
2 GND_I/O
3 PWM_6_5V
4 PWM_5_5V
5 I2C2_SDA_5V
6 I2C2_SCL_5V
7 ADC_0
8 ADC_1
9 ADC_2
10 ADC_3
Expansion Connector #2
CN60
Pin Signal
1 RS_232_TX
2 RS_232_RX
3 RS_232_RTS
4 RS_232_CTS
5 CAN1_H
6 CAN1_L
7 CAN2_H
8 CAN2_L
9 RS485_D+
10 RS485_D-
SBC-C23
SBC-C23 User Manual - Rev. First Edition: 1.0 - Last Edition: 1.1 - Author: S.B. - Reviewed by L.B. -Copyright © 2020 SECO S.p.A.
The SBC-C23 board offers the possibility of expanding its functionalities by using some additional
interfaces, available on two dedicated 10-pin PCB terminal blocks, CN59 and CN60, type
EUROCLAMP p/n PV08-3,81-H-P or equivalent.
The pinout of these connectors are shown in the tables on the left .
PWM_6_5V: PWM Output signal, electrical level VCC_SW with 2k2Ω pull-up resistor. It is managed by i.MX6SX pin
RGMII2_TD2.
PWM_5_5V: PWM Output signal, electrical level VCC_SW with 2k2Ω pull-up resistor. It is managed by i.MX6SX pin
RGMII2_TD3.
I2C2_SDA_5V: I2C Bus data line. Bidirectional signal, electrical level VCC_SW with a 2k2Ω pull-up resistor. It is managed by
i.MX6 processor's I2C controller #2 (pin GPIO_3)
I2C2_SCL_5V: I2C Bus clock line. Output signal, electrical level VCC_SW with a 2k2Ω pull-up resistor. It is managed by i.MX6
processor's I2C controller #2 (pin GPIO_2)
ADC_[0..3]: i
RS_232_TX: i.MX6SX UART #2 transmit data signal, RS-232 electrical level. It is managed by i.MX6SX pin GPIO_IO06
RS_232_RX: i.MX6SX UART #2 Receive data signal, RS-232 electrical level. It is managed by i.MX6SX pin GPIO_IO07
RS_232_RTS: i.MX6SX UART #2 Request to Send signal, RS-232 electrical level. It is managed by i.MX6SX pin SD1_DATA3
RS_232_CTS: i.MX6SX UART #2 Clear to Send signal, RS-232 electrical level. It is managed by i.MX6SX pin SD1_DATA2
CAN ports: they are managed using as many NXP TJA1051T High Speed CAN Transceivers. The i.MX6SX CAN port #1 is
available on pins SD3_DATA7 and SD3_DATA5, while CAN port #2 is available on pins SD3_DATA6 and SD3_DATA4
CAN1_H: High-Level CAN bus line, port #1.
CAN1_L: Low-Level CAN bus line, port #1.
CAN2_H: High-Level CAN bus line, port #2.
CAN2_L: Low-Level CAN bus line, port #2.
RS485_D+/RS485_D-: : RS-485 port, differential pair. It is managed using i.MX6SX UART Port #3, available on pins
QSPIB_SCLK, QSPIB_SS0_B and QSPIB_DATA0 (CTS signal, necessary to manage the direction of RS-485 port)
VCC_OUT_5V: 5V switched voltage for I/Os, max 500mA, derived from VCC_SW voltage.
0..+3.3V]).
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