ADC32RF42: MISO line is low on power up (not programmed)

J P

Part Number: ADC32RF42

Good afternoon,

I noticed that the SDOUT line is 0V on power up (no programming). This line is not shorted to GND, it has ~8.5kOhms resistance. The datasheet did not mention that the line had a pulldown. Is this the intended function?

Thank you

over 5 years ago

0 Vijayendra Varma Siddamsetty over 5 years ago

TI__Genius 11125 points

Hi user,

SDOUT is supposed be 0 V when SPI is not being used. Below timing diagram from datasheet shows the same. It goes high only during register read (if there's a bit high in the register being read)

regards,

Vijay

0 J P over 5 years ago in reply to Vijayendra Varma Siddamsetty

Intellectual 370 points

Thank you for your response! I was looking at that diagram to confirm SEN is low when SDOUT is valid and totally spaced noticing the part you highlighted. Thank you for pointing it out.

Have a great day,

Julia

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ADC32RF42: MISO line is low on power up (not programmed)