Hi Team,
The customer is using DRV8821. When the customer use two motors at the same time, the fever for the DRV8821 device is very serious.
So he decided to use only one motor through the AB channel of DRV8821, not use the CD channel.
When the customer only uses the AB channel, how to set the CD channel pins, especially the CDREF pin, the CISEN pin and the DISEN pin ? Are the the CD channel pins floating? Or be pulled up? Or be pulled down?
The CD channel pins are CDSTEP pin, CDDIR pin, CDUSM0 pin/CDUSM1 pin, CDENBLn pin, CDRESETn pin, CDDECAY pin, CDREF pin, COUT1 pin/COUT2 pin, CISEN pin, DOUT1 pin/DOUT2 pin and DISEN pin.
Best Wishes,
Mickey Zhang
Asia Customer Support Center
Texas Instruments