Atmel XMEGA B, User Manual

Page: 168 / 415

168 XMEGA B [DATASHEET]
8291B–AVR–01/2013

Bit 3:2 – ERRINTLVL[1:0]:Timer Error Interrupt Level
These bits enable the timer error interrupt and select the interrupt level as described in “Interrupts and Programmable
Multilevel Interrupt Controller” on page 118 .

Bit 1:0 – OVFINTLVL[1:0]:Timer Overflow/Underflow Interrupt Level
These bits enable the timer overflow/underflow interrupt and select the interrupt level as described in “Interrupts and
Programmable Multilevel Interrupt Controller” on page 118 .
13.12.7 INTCTRLB – Interrupt Enable register B

Bit 7:0 – CCxINTLVL[7:0] - Compare or Capture x Interrupt Level
These bits enable the timer compare or capture interrupt for channel x and select the interrupt level as described in
“Interrupts and Programmable Multilevel Interrupt Controller” on page 118 .
13.12.8 CTRLFCLR/CTRLFSET – Control register F Clear/Set
This register is mapped into two I/O memory locations, one for clearing (CTRLxCLR) and one for setting the register bits
(CTRLxSET) when written. Both memory locations will give the same result when read.
The individual status bit can be set by writing a one to its bit location in CTRLxSET, and cleared by writing a one to its bit
location in CTRLxCLR. This allows each bit to be set or cleared without use of a read-modify-write operation on a single
register.
13.12.8.1 CTRLFCLR
13.12.8.2 CTRLFSET

Bit 7:4 – 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.
 Bit 3:2 – CMD[1:0]: Command
These bits can be used for software control of update, restart, and reset of the timer/counter. The command bits are
always read as zero.
Bit 7 6 5 4 3 2 1 0
+0x07
CCDINTLVL[1:0] CCCINTLVL[1:0] CCBINTLVL[1:0] CCAINTLVL[1:0]
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 7 6 5 4 3 2 1 0
+0x08
– – – – CMD[1:0] LUPD DIR
Read/Write R R R R R R R/W R/W
Initial Value 0 0 0 0 0 0 0 0
Bit 7 6 5 4 3 2 1 0
+0x09
– – – – CMD[1:0] LUPD DIR
Read/Write R R R R R/W R/W R/W R/W
Initial Value 0 0 0 0 0 0 0 0