Datasheet

173
XMEGA B [DATASHEET]
8291B–AVR–01/2013
13.12.18PERBUFL – Timer/Counter Period Buffer Low
The PERBUFH and PERBUFL register pair represents the 16-bit value, PERBUF. This 16-bit register serves as the
buffer for the period register (PER). Accessing this register using the CPU or DMA will affect the PERBUFV flag.
 Bit 7:0 – PERBUF[7:0]: Period Buffer low byte
These bits hold the LSB of the 16-bit period buffer register.
13.12.19PERBUFH – Timer/Counter Period Buffer High
 Bit 7:0 – PERBUF[15:8]: Period Buffer high byte
These bits hold the MSB of the 16-bit period buffer register.
13.12.20CCxBUFL – Compare or Capture x Buffer register Low
The CCxBUFH and CCxBUFL register pair represents the 16-bit value, CCxBUF. These 16-bit registers serve as the
buffer for the associated compare or capture registers (CCx). Accessing any of these registers using the CPU or DMA
will affect the corresponding CCxBV status bit.
 Bit 7:0 – CCxBUF[7:0]: Compare or Capture Buffer low byte
These bits hold the LSB of the 16-bit compare or capture buffer register.
Bit 76543210
+0x36 PERBUF[7:0]
Read/Write R/W R/W R/W R/W R/W R/W R/W R/W
Initial Value 1 1111111
Bit 76543210
+0x37 PERBUF[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 76543210
CCxBUFx[7:0]
Read/Write R/W R/W R/W R/W R/W R/W R/W R/W
Initial Value 00000000