Data Sheet

862
Atmel | SMART SAM D21 [DATASHEET]
Atmel-42181G–SAM-D21_Datasheet–09/2015
32.8.3 Average Control
Name: AVGCTRL
Offset: 0x02
Reset: 0x00
Property: Write-Protected
z Bit 7 – Reserved
This bit is unused and reserved for future use. For compatibility with future devices, always write this bit to zero
when this register is written. This bit will always return zero when read.
z Bits 6:4 – ADJRES[2:0]: Adjusting Result / Division Coefficient
These bits define the division coefficient in 2
n
steps.
z Bits 3:0 – SAMPLENUM[3:0]: Number of Samples to be Collected
These bits define how many samples should be added together.The result will be available in the Result register
(RESULT). Note: if the result width increases, CTRLB.RESSEL must be changed.
Table 32-8. Number of Samples to be Collected
Bit 76543210
ADJRES[2:0] SAMPLENUM[3:0]
Access R R/W R/W R/W R/W R/W R/W R/W
Reset00000000
SAMPLENUM[3:0] Name Description
0x0 1 1 sample
0x1 2 2 samples
0x2 4 4 samples
0x3 8 8 samples
0x4 16 16 samples
0x5 32 32 samples
0x6 64 64 samples
0x7 128 128 samples
0x8 256 256 samples
0x9 512 512 samples
0xA 1024 1024 samples
0xB-0xF Reserved