18.3.2 RDC ADC Selection Register

Note:
  1. Writes to the register when ON (RDCCON[15]) = 1 will be ignored.
  2. The table lists example values. Refer to the ADC chapter for details on the number of ADC module instances and the channel count for each instance.

Legend: HC = bit is Cleared by Hardware; HS = bit is Set by Hardware; S = bit can be Set only; R = Readable bit; W = Writable bit; U = Unimplemented bit, read as '0'; -n = Value at POR; '1' = bit is set; '0' = bit is cleared; x = bit value is unknown

Name: RDCINSEL
Offset: 0x001F94

Bit 3130292827262524 
        ISIGN1 
Access R/W 
Reset 0 
Bit 2322212019181716 
 ICHAN1[4:0]IMUX1[2:0] 
Access R/WR/WR/WR/WR/WR/WR/WR/W 
Reset 00000000 
Bit 15141312111098 
        ISIGN0 
Access R/W 
Reset 0 
Bit 76543210 
 ICHAN0[4:0]IMUX0[2:0] 
Access R/WR/WR/WR/WR/WR/WR/WR/W 
Reset 00000000 

Bit 24 – ISIGN1 External Input 1 Sign Adjust bit

ValueDescription
1

Convert the unsigned representation of the CIC filter input on channel 1 to a signed representation.
0

The selected CIC filter input on channel 1 will not be modified.

Bits 23:19 – ICHAN1[4:0]  CIC Filter Input 1 Channel Selector bits(2)

Selects the ADC input signal channel corresponding to the ADC module instance selected by IMUX1. The external input to the CIC filter channel 1 will be sourced through this ADC channel. Set to 0 when IMUX1 selects an input source with no associated channel information.
ValueDescription
00001

The source of digital input samples for the CIC filter channel 1 is ADC channel 1 of the ADC module instance selected by IMUX1.
00000

The source of digital input samples for the CIC filter channel 1 is ADC channel 0 of the ADC module instance selected by IMUX1.

Bits 18:16 – IMUX1[2:0]  CIC Filter Input Multiplexer 1 bit(2)

Selects the ADC module instance that sources external input signals for the CIC filter channel 1. If the value corresponds to an ADC module instance that is not available with the device, then the IMUXCFGERR(RDCSTAT[1]) bit will be set.
ValueDescription
001

ADC module instance 2 sources digital input samples to the CIC filter channel 1.
000

ADC module instance 1 sources digital input samples to CIC filter channel 1.

Bit 8 – ISIGN0 External Input 0 Sign Adjust bit

ValueDescription
1

Convert the unsigned representation of the CIC filter input on channel 0 to a signed representation.
0

The selected CIC filter input on channel 0 will not be modified.

Bits 7:3 – ICHAN0[4:0]  CIC Filter Input 0 Channel Selector bit(2)

Selects the ADC input signal channel corresponding to the ADC module instance selected by IMUX0. The external input to the CIC filter channel 0 will be sourced through this ADC channel. Set to 0 when IMUX0 selects an input source with no associated channel information.
ValueDescription
00001

The source of digital input samples for CIC filter channel 0 is ADC channel 1 of the ADC module instance selected by IMUX0.
00000

The source of digital input samples for CIC filter channel 0 is ADC channel 0 of the ADC module instance selected by IMUX0.

Bits 2:0 – IMUX0[2:0]  CIC Filter Input Multiplexer 0 bit(2)

Selects the ADC module instance that sources external input signals for the CIC filter channel 0. If the value corresponds to an ADC module instance that is not available with the device, then the IMUXCFGERR(RDCSTAT[1]) bit will be set.
ValueDescription
001

ADC module instance 2 sources digital input samples to the CIC filter channel 0.
000

ADC module instance 1 sources digital input samples to the CIC filter channel 0.