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AUX – Sensor Controller Registers

17.8.8.10 ADCREF0 Register (Offset = Ah) [reset = X]

ADCREF0 is shown in Figure 17-79 and described in Table 17-104.

ADC Reference 0 Control reference used by the ADC

Figure 17-79. ADCREF0 Register

7 6 5 4 3 2 1 0

RESERVED REF_ON_IDLE RESERVED SRC RESERVED EN

R/W-X R/W-X R/W-X R/W-X R/W-X R/W-X

Table 17-104. ADCREF0 Register Field Descriptions

Bit Field Type Reset Description

7 RESERVED R/W X

Software should not rely on the value of a reserved. Writing any

other value than the reset value may result in undefined behavior.

6 REF_ON_IDLE R/W X

Keep ADCREF powered up in IDLE state when ADC0.SMPL_MODE

= 0. Set to 1 if ADC0.SMPL_CYCLE_EXP is less than 6 (21.3us

sampling time)

5-4 RESERVED R/W X

Software should not rely on the value of a reserved. Writing any

other value than the reset value may result in undefined behavior.

3 SRC R/W X

ADC reference source: 0: Fixed reference = 4.3V 1: Relative

reference = VDDA

2-1 RESERVED R/W X

Software should not rely on the value of a reserved. Writing any

other value than the reset value may result in undefined behavior.

0 EN R/W X

ADC reference module enable: 0: ADC reference module powered

down 1: ADC reference module enabled

1309

SWCU117A–February 2015–Revised March 2015 AUX – Sensor Controller with Digital and Analog Peripherals

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