How to change external MUX select lines using ADCn_MA[0...2] in MPC5746C

cancel
Showing results for 
Show  only  | Search instead for 
Did you mean: 

How to change external MUX select lines using ADCn_MA[0...2] in MPC5746C

477 Views
kavithakakarla
Contributor II

Hi,

I would like to know what register values need to be updated to change the select lines of the external multiplexers connected to MPC5746C.

I understand we need to use ADCn_MA[0..2] to change the select lines of the external multiplexers from 0 through 8, but exactly what register and which bit information is not provided in the MPC5746C reference manual. 

Please help.

0 Kudos
1 Reply

364 Views
davidtosenovjan
NXP TechSupport
NXP TechSupport

It does not work this way.

 

Just choosing of external channel number will assert particular MA lines to select external channel with using of external multiplexer.

For instance if you perform conversion of channel 66 by ADC0, then ADC module automatically asserts ADCn_MA[0..2] as 0b010 to connect particular MUX input to MCU's ADC input and conversion is performed over ADC1_X[0] line.

pastedImage_2.png

Hope it helps

0 Kudos