26.3.1 FVRCON

Fixed Voltage Reference Control Register
Note:
  1. Fixed Voltage Reference output cannot exceed VDD.
  2. FVRRDY is always ‘1’.
Name: FVRCON
Offset: 0x090C

Bit 76543210 
 FVRENFVRRDY    ADFVR[1:0] 
Access R/WRR/WR/W 
Reset 0000 

Bit 7 – FVREN Fixed Voltage Reference Enable bit

ValueDescription
1 Fixed Voltage Reference is enabled
0 Fixed Voltage Reference is disabled

Bit 6 – FVRRDY  Fixed Voltage Reference Ready Status bit (2)

ValueDescription
1 Fixed Voltage Reference output is ready for use
0 Fixed Voltage Reference output is not ready or not enabled

Bits 1:0 – ADFVR[1:0] ADC FVR Buffer Gain Selection bit

ValueDescription
11

ADC FVR Buffer Gain is 4x, (4.096V)(1)
10

ADC FVR Buffer Gain is 2x, (2.048V)(1)
01

ADC FVR Buffer Gain is 1x, (1.024V)
00

ADC FVR Buffer is off
Fixed Voltage Reference output cannot exceed VDD. FVRRDY is always ‘1’.