34.3.1 FVRCON

FVR Control Register
Important: This register is shared between the Fixed Voltage Reference (FVR) module and the temperature indicator module.
Note:
  1. This output goes to the DAC and comparator modules, and to the ADC module as an input channel only.
  2. This output goes to the ADC module as a reference and an input channel.
  3. Fixed Voltage Reference output cannot exceed VDD.
Name: FVRCON
Address: 0x100C

Bit 76543210 
 ENRDYTSENTSRNGCDAFVR[1:0]ADFVR[1:0] 
Access R/WRR/WR/WR/WR/WR/WR/W 
Reset 0q000000 

Bit 7 – EN Fixed Voltage Reference Enable

ValueDescription
1 Enables module
0 Disables module

Bit 6 – RDY Fixed Voltage Reference Ready Flag

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

Bit 5 – TSEN Temperature Indicator Enable

ValueDescription
1 Temperature Indicator is enabled
0 Temperature Indicator is disabled

Bit 4 – TSRNG Temperature Indicator Range Selection

ValueDescription
1 VOUT = 3VT (High Range)
0 VOUT = 2VT (Low Range)

Bits 3:2 – CDAFVR[1:0]  FVR Buffer 2 Gain Selection(1)

ValueDescription
11 FVR Buffer 2 Gain is 4x, (4.096V)(3)
10 FVR Buffer 2 Gain is 2x, (2.048V)(3)
01 FVR Buffer 2 Gain is 1x, (1.024V)
00 FVR Buffer 2 is OFF

Bits 1:0 – ADFVR[1:0]  FVR Buffer 1 Gain Selection(2)

ValueDescription
11 FVR Buffer 1 Gain is 4x, (4.096V)(3)
10 FVR Buffer 1 Gain is 2x, (2.048V)(3)
01 FVR Buffer 1 Gain is 1x, (1.024V)
00 FVR Buffer 1 is OFF
This output goes to the DAC and comparator modules, and to the ADC module as an input channel only. This output goes to the ADC module as a reference and an input channel. Fixed Voltage Reference output cannot exceed VDD.