Motorola ColdFire MCF5281 - Manual (Page 403)

DMA Timers (DTIM0–DTIM3)
Freescale Semiconductor 21-11
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:
Eqn. 21-2 Timeout period
1
80 10
6 Ч
-------------------- 16 127 1 +
( )
78124 1 +
( ) Ч Ч Ч
2.00 seconds = =
MCF5282 and MCF5216 ColdFire Microcontroller User’s Manual, Rev. 3