Event Counter Mode, Trm = 0 - Motorola DSP56303 User Manual

Mode 3 (internal clock): TRM = 0
N = write preload
M = write compare
TE
Clock
(TIO pin or prescale CLK)
TLR
Counter (TCR)
TCPR
TCF (Compare Interrupt if TCIE = 1)
TOF (Overflow Interrupt if TCIE = 1)
NOTE: If INV = 1, counter is clocked on 1-to-0 clock transitions, instead of 0-to-1 transitions.
Figure 9-10. Event Counter Mode, TRM = 0
first event
N
0 N
N + 1
M
Triple Timer Module
if clock source is from TIO pin,
TIO < CPUCLK + 4
M + 1 0
M
Operating Modes
1
9-13