Datasheet

31.8.18 Compare/Capture Channel x
Name: CC
Offset: 0x44 + n*0x04 [n=0..3]
Reset: 0x00000000
Property: Write-Synchronized, Read-Synchronized
The CCx register represents the 16-, 24- bit value, CCx. The register has two functions, depending of the
mode of operation.
For capture operation, this register represents the second buffer level and access point for the CPU and
DMA.
For compare operation, this register is continuously compared to the counter value. Normally, the output
form the comparator is then used for generating waveforms.
CCx register is updated with the buffer value from their corresponding CCBx register when an UPDATE
condition occurs.
In addition, in match frequency operation, the CC0 register controls the counter period.
Bit 31 30 29 28 27 26 25 24
Access
Reset
Bit 23 22 21 20 19 18 17 16
CC[17:10]
Access
R/W R/W R/W R/W R/W R/W R/W R/W
Reset 0 0 0 0 0 0 0 0
Bit 15 14 13 12 11 10 9 8
CC[9:2]
Access
R/W R/W R/W R/W R/W R/W R/W R/W
Reset 0 0 0 0 0 0 0 0
Bit 7 6 5 4 3 2 1 0
CC[1:0] DITHER[5:0]
Access
R/W R/W R/W R/W R/W R/W R/W R/W
Reset 0 0 0 0 0 0 0 0
Bits 23:6 – CC[17:0] Channel x Compare/Capture Value
These bits hold the value of the Channel x compare/capture register.
Note: When the TCC is configured as 16-bit timer/counter, the excess bits are read zero.
Note: This bit field occupies the m MSB of the register, [23:m]. m is dependent on the Resolution bit in
the Control A register (CTRLA.RESOLUTION):
CTRLA.RESOLUTION Bits [23:m]
0x0 - NONE 23:0
SAM D21 Family
TCC – Timer/Counter for Control Applications
© 2018 Microchip Technology Inc.
Datasheet Complete
DS40001882D-page 782