Table 2-1 shows a description of the jumper selections on the EVM with a short description of the function of each pin.

Table 2-1. Jumper Definitions

The TCAN1043AEVM is populated with two 120-Ω power resistors selectable via jumpers between CANH and CANL. When using one resistor, the EVM is used as a terminated end of a bus. For electrical measurements to represent the total loading of the bus, use both 120-Ω resistors in parallel to give the standard 60-Ω load for parametric measurement. The EVM also has footprints for split termination, if needed for the application. Table 2-4 summarizes how to use these termination options. If using split termination, match the resistors. Calculate the CM filter frequency using: f C = 1 / (2πRC). Normally, the split capacitance is in the range of 4.7 nF to 100 nF. Keep in mind, this is the CM filter frequency, not a differential filter that impacts the differential CAN signal directly.

Table 2-4. Bus Termination Configuration

The EVM also has footprints for various protection schemes to enhance robustness for extreme system-level EMC requirements. Table 2-5 summarizes these options.

Table 2-5. Protection and Filtering Configuration

The TCAN1043A-Q1 is designed to support CAN applications where ultra-low-power requirements exist. The applications include, but are not limited to: (≤ 1 Mbps), CAN FD applications up to 8 Mbps:

• Classic CAN:
• -Supports CAN with data rates up to 1 Mbps
• CAN FD:
• -Supports CAN FD timing requirements at 2 Mbps
• -Supports CAN FD timing requirements at 5 Mbps
• -Supports CAN FD messaging at 8 Mbps
• 12-V and 24-V applications
• Automotive
• Transportation
• Industrial
• Telecom

TCAN1043AEVM Pinout

Package: SOT-8 (8-pin Small Outline Transistor)

Notes

• Pin 1 (TXD): Integrated pull-up resistor; series resistor R3 (0 Ω default) and optional pull-up R2 or pull-down R4 available on EVM.
• Pin 4 (RXD): Tri-state output; series resistor R5 (0 Ω default) and optional filter capacitor C3 available on EVM.
• Pin 2 (VSUP): Supports automotive battery voltages with reverse-blocking diode protection; monitored via TP13 on EVM.
• Pin 7 (VCC): Primary supply for transceiver logic; monitored via TP11 on EVM.
• Pin 8 (VIO): I/O buffer supply; can be driven independently from VCC via P2 or TP12 on EVM; default configuration shorts VCC and VIO together via JMP6.
• Additional control pins (EN, nSTB, INH, nFAULT, WAKE, INH_MASK) are not part of the standard 8-pin SOT package but are available on the EVM via jumper headers (JMP1, JMP2) and test points for evaluation purposes. These are external EVM features, not IC pins.
• The TCAN1043A-Q1 is a CAN FD transceiver supporting data rates up to 8 Mbps and operates in multiple modes: Normal, Silent, Standby, Sleep, and Go-to-Sleep.