DRV8860 ENABLE Pin

Nick Karakotas

Hi, I would like to omit the usage of the enable pin by tying high in our design; however I'm not sure how/when the ENABLE pin is used. It's not shown on the timing diagrams. Do you toggle it low only if you want to read/write the control registers aka special registers? Nick

over 9 years ago

0 Rick Duncan over 9 years ago

TI__Guru** 114905 points

Hi Nick,

The ENABLE pin enables the outputs as described in the Pin Functions. Logic high enables the outputs, logic low disables (Hi-z) the outputs.

Figure 10 shows the state of the data registers on power up is 0, so there should be no problem.

0 Nick Karakotas over 9 years ago in reply to Rick Duncan

Prodigy 60 points

Hi,

I designed the board and tied the ENABLE pin to high. Whenever I try to write with SPI to the register I get the fault led ACTIVE low signal and my boards fault led turns on. I have successfully read another digital serialiser with the same connections. I unsure to what the problem is. Your advice might direct me to what to look for.

Regards,
Nick

0 Nick Karakotas over 9 years ago in reply to Nick Karakotas

Prodigy 60 points

It was actually an issue on my end I can now write to the ic.

0 Wilson Zuo over 9 years ago in reply to Nick Karakotas

TI__Mastermind 26065 points

Hi Nick

Glad to know. Thank you of your feedback!

Best regards,

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DRV8860 ENABLE Pin