Datasheet

190
XMEGA B [DATASHEET]
8291B–AVR–01/2013
Figure 15-2. Timer/counter extensions and port override logic.
15.4 Dead-time Insertion
The dead-time insertion (DTI) unit generates OFF time where the non-inverted low side (LS) and inverted high side (HS)
of the WG output are both low. This OFF time is called dead time, and dead-time insertion ensures that the LS and HS
never switch simultaneously.
The DTI unit consists of four equal dead-time generators, one for each compare channel in timer/counter 0. Figure 15-3
on page 191 shows the block diagram of one DTI generator. The four channels have a common register that controls the
OUT0
OUTOVEN0
CCAEN
DTICCAEN
INVEN0
OUT1
OUTOVEN1
CCBEN INVEN1
Px0
Px1
Channel
A
DTI
LS
HS
OC0A
OC0B
OCALS
OCAHS
WG 0A
WG 0B
WG 0A
CWCM
OUT2
OUTOVEN2
CCCEN
DTICCBEN
INVEN2
OUT3
OUTOVEN3
CCDEN INVEN3
Px2
Px3
Channel
B
DTI
LS
HS
OC0C
OC0D
OCBLS
OCBHS
WG 0C
WG 0D
OUT4
OUTOVEN4
CCAEN
DTICCCEN
INVEN4
OUT5
OUTOVEN5
CCBEN INVEN5
Px4
Px5
Channel
C
DTI
LS
HS
OC1A
OC1B
OCCLS
OCCHS
WG 1A
WG 1B
OUT6
OUTOVEN6
DTICCDEN
INVEN6
OUT7
OUTOVEN7
INVEN7
Px6
Px7
Channel
D
DTI
LS
HS
OCDLS
OCDHS
WG 0B
WG 0D
WG 0C
"0"
"0"