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Re: ADC External Channels Usage in MPC746C

Question asked by Kavitha Kakarla on May 30, 2017
Latest reply on Jun 1, 2017 by David Tosenovjan
Branched from an earlier discussion

Thanks for the explanation.

To be more clear Iam looking for the below details:

For example Assume, ADC0_X[0] (external channels 64 to 71 of MPC5764C) is been connected to an external 8:1 MUX and ADC0_MA[0] to ADC0_MA[2] are configured for the select lines. And the ADC0_CTR2 register is updated to enable normal conversion for the channels 64 to 71.

And now if the ADC0_MA[0] to ADC0_MA[2] is been updated to select the ADC Channel 67, and the normal conversion is started with ADC0_MCR[NSTART]=1. 

Will the ADC converts all the channels from 64 to 71 (since all these channels are enabled for Normal Conversion with ADC0_CTR2 register)


Only the channel 67 will be converted since the select lines for external MUX are configured to output only Channel 67.