Following Figure 1 2 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 see also User’s Manual R18UZ0007EJ1100 section 7.1.1 | |||||||
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_CRXD0GPIO0 | CAN Port 0 | 16 | CAN_CTXD0 | 17 | CAN_CRXD1 | CAN Port 1 | 18 | CAN_CTXD1Port 5 Pin P53 see also User’s Manual R18UZ0003EJ0401 section 2.1.5 |
16 | GPIO1 | Port 5 Pin P54 see also User’s Manual R18UZ0003EJ0401 section 2.1.5 | |||||||
17 | GPIO2 | Port 5 Pin P55 see also User’s Manual R18UZ0003EJ0401 section 2.1.5 | |||||||
18 | GPIO3 | Port 5 Pin P56 see also User’s Manual R18UZ0003EJ0401 section 2.1.5 | |||||||
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 |