SLLU355 October 2022 TCAN1046A-Q1 , TCAN1046AV-Q1
This user guide details the TCAN1046A/V CAN (Controller Area Network) EVM transceiver operation. The TCAN1046A/V CAN EVM is configurable for the SOIC package version of both TCAN1046A and TCAN1046AV. This user guide explains the EVM configurations for basic CAN evaluation, and various load and termination settings.
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TI offers a broad portfolio of high speed (HS) CAN transceivers compatible with the ISO11898-2 high speed CAN standards. These include 5-V VCC only, 3.3-V VCC only, 5-V VCC with I/O level shifting and galvanic-isolated CAN transceivers. These CAN transceiver families include product mixes with varying features such as low-power standby modes with and without wake up, silent modes, loop back, and diagnostic modes.
The TCAN1046A/V EVM helps designers evaluate the operation and performance of TCAN1046A and TCAN1046AV transceivers in the SOIC package. It also provides bus termination, bus filtering, and protection concepts. It is easily configured by the customer to test different configurations with jumper settings, simple soldering tasks, and replacement of standard components, as well as both CAN interfaces on the device separately.
The TCAN1046A/V EVM has simple connections to all necessary pins of the CAN transceiver device, and jumpers where necessary to provide flexibility for device pin and CAN bus configuration. There are test points (loops) for all main points where probing is necessary for evaluation such as GND, VCC, TXD, RXD, CANH, CANL, STBY, and VIO. The EVM supports many options for CAN bus configuration. It is pre-configured with two 120-Ω resistors that are connected on the bus via jumpers: a single resistor is used with the EVM as a terminated line end (CAN is defined for 120-Ω impedance twisted pair cable) or both resistors in parallel for electrical measurements representing the 60-Ω load the transceiver “sees” in a properly terminated network (that is, 120-Ω termination resistors at both ends of the cable). The bus also has termination of two 60-Ω resistors in series with a 4.7nF capacitor to GND at the midpoint, all soldered down. This gives the option to test the other typical termination network on CAN buses.
Figure 1-1 shows the EVM board image.
Figure 1-2 shows the EVM schematic.