Data Sheet

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Atmel | SMART SAM D21 [DATASHEET]
Atmel-42181G–SAM-D21_Datasheet–09/2015
19.8.1.19 Channel Control B
Name: CHCTRLB
Offset: 0x44
Reset: 0x00000000
Property: Enable-Protected, Write-Protected
z Bits 31:26 – Reserved
These bits are unused and reserved for future use. For compatibility with future devices, always write these bits to
zero when this register is written. These bits will always return zero when read.
z Bits 25:24 – CMD[1:0]: Software Command
These bits define the software commands, as shown in Table 19-6.
These bits are not enable-protected.
Table 19-6. Software Command
Bit 3130292827262524
CMD[1:0]
AccessRRRRRRR/WR/W
Reset00000000
Bit 2322212019181716
TRIGACT[1:0]
AccessR/WR/WRRRRRR
Reset00000000
Bit 151413121110 9 8
TRIGSRC[5:0]
Access R R R/W R/W R/W R/W R/W R/W
Reset00000000
Bit 76543210
LVL[1:0] EVOE EVIE EVACT[2:0]
Access R R/W R/W R/W R/W R/W R/W R/W
Reset00000000
CMD[1:0] Name Description
0x0 NOACT No action
0x1 SUSPEND Channel suspend operation
0x2 RESUME Channel resume operation
0x3 Reserved