ADC081S021: CS not going low

Vani Aithal

Part Number: ADC081S021

Hi,

I am interfacing TMS570LS014 with ADC081S021 via MIBSPI3 of a 100 PZ. Master sends CS low at the start. However I am not seeing the CS going low, CLK is present.

All settings seems to be correct. Anything to be taken care of here specially?

Thanks

Vani

over 7 years ago

0 Vishy Viswanathan over 7 years ago

TI__Mastermind 21685 points

Vani,
ADC081S021 works as a slave SPI device. And it requires a master SPI controller to drive chip select CS and generate clock. So CS should be generated and controlled by the MCU TMC570. Please check TMC570 SPI settings. If possible, please upload a schematic of ADC081S021 connection to the MCU.
Thanks,
Vishy

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ADC081S021: CS not going low