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.
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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 / CSIH0) see also User’s Manual R18UZ0007EJ1100 chapter 17 | |
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 | Timer Array Unit (TAUJ2) see also User’s Manual R18UZ0007EJ1100 chapter 14 |
20 | TAUJ2_CH1 | ||
21 | TAUJ2_CH2 | ||
22 | GND | Ground (optional) | |
23 | SPI_RST1 | Serial Peripheral Interface 1 (R-IN32M3-EC specific Clocked Serial Interface H / CSIH1) see also User’s Manual R18UZ0007EJ1100 chapter 17 | |
24 | SPI_SCK1 | ||
25 | SPI_MOSI1 | ||
26 | SPI_MISO1 | ||
27 | SPI_CS1 | ||
J303 (purple) | 28 | I2C_SDA1 | I2C BUS (IICB1) see also User’s Manual R18UZ0007EJ1100 chapter 18 |
29 | I2C_SCL1 | ||
30 | UART_RXD0 | Asynchronous Serial Interface 0 (UARTJ0) see also User’s Manual R18UZ0007EJ1100 chapter 16 | |
31 | UART_TXD0 | ||
32 | UART_RTS0 | ||
33 | GND | Ground (optional) | |
34 | UART_RXD1 | Asynchronous Serial Interface 1 (UARTJ1) see also User’s Manual R18UZ0007EJ1100 chapter 16 | |
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 |