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Check that all reset/enable have an external pull-up or pull-down resistors. Rep...

fazrisolahudin

@copilot Check that all reset/enable have an external pull-up or pull-down resistors. Report action items in an ordered list.

copilot

Looking at the details provided for the TJA1051T-2Z CAN transceiver, there are no pins explicitly identified for reset or enable. Also, there are no active-enabled pins. It implies that the TJA1051T-2Z is always active when it's powered, requiring no external controlling signal for enabling or resetting.

Before preceding, here are the identified pins for the TJA1051T-2Z:

TXD (Transmitter data input)
RXD (Receiver data output)
CANH (CAN bus high-level line)
CANL (CAN bus low-level line)
VCC (Power input)
GND (Ground)
S (Standby control input, active LOW)
n.c. (No connection)

Based on these pins, here are the recommended actions for your circuit:

Connect pin TXD to the microcontroller or whatever device is controlling the CAN bus transmission.
Connect pin RXD to the controller's corresponding input for receiving the CAN messages.
The pins CANL and CANH should be linked to the CAN bus, alongside with a 120-Ohm resistor for termination if this node is at either end of the CAN bus.
Connect VCC and GND to the power source; VCC typically is supplied with a +5V reference.
As for the S pin (standby control input), it's active-low meaning it will put the TJA1051T-2Z in standby mode when the S pin gets a low signal. Therefore, connect an external pull-up resistor to keep the CAN transceiver active during normal operation. If the microcontroller should control entry to and exit from standby mode, then connect the S pin to an appropriate microcontroller GPIO.
Leave the pin n.c. (no connection) as is, as it shouldn't be connected to anything.

Note: This answer assumes typical uses and parameters for the CAN transceiver. Please modify if your specific use-case differs.

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TXD

VCC

CANH

RXD

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