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TPS92662-Q1: Simple Application to debug Not Working

Part Number: TPS92662-Q1

Hi,

Hope you can help us we are using the TPS TPS92662-Q1 (8 MHz) with a can transceiver TLE9251SJXUMA1 as the diagram below, and we just want to turn ON one led to start development other things but we cant perform the function :

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The first thing that we did to have a communication between the PC and the TPS was to add a Lawicel CANUSB that it has at the end a Transceiver but we couldn't have successful communication.

image.png

The next thing that we did its communicate directly to the TPS (Lines Tx and RX) with a USB-UART USB232PRO, sending the commands according to the datasheet of the TPS:

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Baudrate: 500 000 according to the 8MHz/16 

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Command: 0x87 0x20 0x80 0x80 0x49 0x1E -> Set the SYSCFG first according to the flow diagram in datasheet 8.4 section bit D7(SEPTR)  to high.

(if we set the ACKEN its not received when we write.)

Command to turn ON the LEDs.

Command:332010FF00000300000000000000000000000027DB

Command: 3320000E55AA00FF55AA14FF54AA29FF54A93EB448

 We cant get the response if we send the single device read according  to the section 7.4.5.7.7.3 in this case we send the command to read the SYSCFG but the unit its not responding as expected:

image.png

Can you help us to verify if all the set up or the commands that we are sending are correct?

Best Regards.

Thank you.