Following Figure 1 shows the Intelligent RJ45 Module in SoM_IoT_2V0 variant at bottom side. There are five 9 pin multipoint connectors readily identifiable.
Connector | Pin | Signal | Function | |
J202 (blue) | 1 | VCC33 | 3.3V DC Power supply | |
2 | GND | |||
3 | SPI_CS0 | Serial Peripheral Interface 0 (R-IN32M3-EC specific Clocked Serial Interface H) | ||
4 | SoM_RESET | |||
5 | SPI_MISO0 | |||
6 | SPI_MOSI0 | |||
7 | SPI_SCK0 | |||
8 | CATSYNC0 | EtherCAT SYNC | ||
9 | CATSYNC1 | |||
J302 (orange) | 10 | P1ACT | Ethernet Port 1 Indicator signals for connection with LED cathode (Link/Activity) | |
11 | P1LINK | |||
12 | P0ACT | Ethernet Port 0 Indicator signals for connection with LED cathode (Link/Activity) | ||
13 | P0LINK | |||
14 | VCC33 | Optional 3.3V DC connection | ||
15 | CAN_CRXD0 | CAN Port 0 | ||
16 | CAN_CTXD0 | |||
17 | CAN_CRXD1 | CAN Port 1 | ||
18 | CAN_CTXD1 | |||
J304 (green) | 19 | TAUJ2_CH0 | ||
20 | TAUJ2_CH1 | |||
21 | TAUJ2_CH2 | |||
22 | GND | |||
23 | SPI_RST1 | Serial Peripheral Interface 1 (R-IN32M3-EC specific Clocked Serial Interface H) | ||
24 | SPI_SCK1 | |||
25 | SPI_MOSI1 | |||
26 | SPI_MISO1 | |||
27 | SPI_CS1 | |||
J303 (purple) | 28 | I2C_SDA1 | ||
29 | I2C_SCL1 | |||
30 | UART_RXD0 | |||
31 | UART_TXD0 | |||
32 | UART_RTS0 | |||
33 | GND | |||
34 | UART_RXD1 | |||
35 | UART_TXD1 | |||
36 | UART_RTS1 | |||
J301 (yellow) | 37 | RX0_N | Ethernet Port 0 Differential Pairs | |
38 | RX0_P | |||
39 | TX0_N | |||
40 | TX0_P | |||
41 | SHIELD | Virtual ground for SHIELD connection only | ||
42 | RX1_N | Ethernet Port 1 Differential Pairs | ||
43 | RX1_P | |||
44 | TX1_N | |||
45 | TX1_P |