SLLU321 July 2022
The TCAN1043AEVM has footprints on the PCB for installing various filtering and protection options to adapt the EVM to match CAN network topology requirements, if the EVM is being used as a CAN node.
Each digital input or output pin has footprints allowing for series current-limiting resistors (default populated with 0 Ω), pull up or pull-down resistors (depending on pin used), and a capacitor to GND which allows for RC filters when configured with a series resistor. Table 2-6 lists these features for each of the digital input and output pins of the EVM. Replace or populate the RC components as necessary for the application.
| Device Pin | Jumper | Series R | Pull Up and Pull Down |
C to GND | Description | |||
|---|---|---|---|---|---|---|---|---|
| No. | Description | Type | Pull Up | Pull Down | ||||
| 1 | TXD | Input | Not available | Not available | R3 | R2 Pull Up R4 Pull down |
R4 | Use R4 to support a filter capacitor |
| 4 | RXD | Output | Not available | Not available | R5 | Not available | C3 | |
| 6 | EN | Input | Not available | JMP2 Position 2 |
Not available | R12 pull up | Not available | |
| 7 | INH | High voltage output | Not available | Not available | Not available | R15 pulldown | Not available | |
| 9 | WAKE | Input | Not available | Not available | Not available | R18, R19 pull up | Not available | |
| 14 | nSTB | Input | Not available | JMP1 | Not available | R1 pull up | Not available | |