Datasheet

172
XMEGA B [DATASHEET]
8291B–AVR–01/2013
13.12.15PERH – Period register High
 Bit 7:0 – PER[15:8]: Period high byte
These bits hold the MSB of the 16-bit period register.
13.12.16CCxL – Compare or Capture x register Low
The CCxH and CCxL register pair represents the 16-bit value, CCx. These 16-bit register pairs have two functions,
depending of the mode of operation.
For capture operation, these registers constitute the second buffer level and access point for the CPU and DMA.
For compare operation, these registers are continuously compared to the counter value. Normally, the outputs form the
comparators are then used for generating waveforms.
CCx registers are updated with the buffer value from their corresponding CCxBUF register when an UPDATE condition
occurs.
 Bit 7:0 – CCx[7:0]: Compare or Capture x low byte
These bits hold the LSB of the 16-bit compare or capture register.
13.12.17CCxH – Compare or Capture x register High
 Bit 7:0 – CCx[15:8]: Compare or Capture x high byte
These bits hold the MSB of the 16-bit compare or capture register.
Bit 76543210
+0x27 PER[15:8]
Read/Write R/W R/W R/W R/W R/W R/W R/W R/W
Initial Value 1 1 1 1 1 1 1 1
Bit 7 6 5 4 3 2 1 0
CCx[7:0]
Read/Write R/W R/W R/W R/W R/W R/W R/W R/W
Initial Value 0 0 0 0 0 0 0 0
Bit 76543210
CCx[15:8]
Read/Write R/W R/W R/W R/W R/W R/W R/W R/W
Initial Value 0 0 0 0 0 0 0 0