Following Figure 1 shows the Intelligent RJ45 Module in SoM_IoT_1V2 variant at bottom side. There are three 9 pin multipoint connectors readily identifiable.
Connector | Pin | Signal | Function |
J202 (blue) | 1 | VCC33 | 3.3V DC Power supply |
2 | GND | ||
3 | CS | Serial Peripheral Interface (R-IN32M3-EC specific Clocked Serial Interface H) | |
4 | RESET | ||
5 | MISO | ||
6 | MOSI | ||
7 | SCK | ||
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 | ||
J301 (yellow) | 19 | RX0_N | Ethernet Port 0 Differential Pairs |
20 | RX0_P | ||
21 | TX0_N | ||
22 | TX0_P | ||
23 | SHIELD | Virtual ground for SHIELD connection only | |
24 | RX1_N | Ethernet Port 1 Differential Pairs | |
25 | RX1_P | ||
26 | TX1_N | ||
27 | TX1_P |