Table 10-1 summarizes the ITU functions.
Table 10-1 ITU Functions
Item
Clock sources
Channel 0
Internal clocks: , /2, /4, /8
External clocks: TCLKA, TCLKB, TCLKC, TCLKD, selectable independently
GRA0, GRB0
GRA1, GRB1
GRA2, GRB2
Channel 1
Channel 2
Channel 3
Channel 4
General registers
(output compare/input
capture registers)
Buffer registers
Input/output pins
GRA3, GRB3
GRA4, GRB4
—
TIOCA
0
,
TIOCB
0
—
—
TIOCA
1
,
TIOCB
1
—
—
TIOCA
2
,
TIOCB
2
—
BRA3, BRB3
TIOCA
3
,
TIOCB
3
—
BRA4, BRB4
TIOCA
4
,
TIOCB
4
TOCXA
4
,
TOCXB
4
GRA4/GRB4
compare
match or
input capture
o
o
o
o
o
o
o
Output pins
Counter clearing function
GRA0/GRB0
compare
match or
input capture
o
o
o
o
o
o
—
GRA1/GRB1
compare
match or
input capture
o
o
o
o
o
o
—
GRA2/GRB2
compare
match or
input capture
o
o
—
o
o
o
—
GRA3/GRB3
compare
match or
input capture
o
o
o
o
o
o
o
0
1
Toggle
Input capture function
Synchronization
PWM mode
Reset-synchronized
PWM mode
Complementary PWM
mode
Phase counting mode
Buffering
DMAC activation
—
—
—
o
o
—
—
GRA0 compare GRA1 compare GRA2 compare GRA3 compare —
match or
match or
match or
input capture
input capture
input capture
Three sources
Three sources
Three sources
Compare
Compare
Compare
match/input
match/input
capture A0
capture A1
Compare
Compare
Compare
match/input
match/input
capture B0
capture B1
Overflow
Overflow
Overflow
—
—
o
—
—
o
—
o
match or
input capture
Three sources
Compare
match/input
capture A3
Compare
match/input
capture B3
Overflow
Interrupt sources
Three sources
Compare
match/input
capture A4
Compare
match/input
capture B4
Overflow
match/input
capture A2
match/input
capture B2
Legend
o
: Available
—: Not available
Compare
match output
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