Freescale Semiconductor MCF5329 Reference Manual page 703

For example, if a 80-MHz timer clock is divided by 16, DTMRn[PS] equals 0x7F, and the timer is
referenced at 0x1312C (78,124 decimal), the time-out period is:
Timeout period
Freescale Semiconductor
1
× × ( )
------------------- -
= 16 127 + 1
× 6
80 10
MCF5329 Reference Manual, Rev 3
× ( )
78124 + 1 = 2.00 s
DMA Timers (DTIM0–DTIM3)
Eqn. 29-2
29-11