Table 5-27 Compare High Word Registers; Table 5-28 Compare Low Word Registers - SMART Embedded Computing Penguin Edge MVME250 Series Installation And User Manual

Memory Maps and Registers
When programming the tick timer for periodic interrupt, the counter should be cleared to
zero by software and then enabled. If the counter does not initially start at zero, the time to
the first interrupt may be longer or shorter than expected. Note that the rollover time for the
counter is 71.6 minutes.
Since the processor is 16-bits and the tick timer is 32-bits, the compare register was split
in half. Accessing the whole register will require two transactions.

Table 5-27 Compare High Word Registers

Tick Timer 0 Compare Value High Word - 0xFFC80204
REG Tick Timer 1 Compare Value High Word - 0xFFC80304
Tick Timer 2 Compare Value High Word - 0xFFC80404
Bit 15
Field TickTimer Compare Value High Word (16-bits)
OPER R/W
RESET 0x0000

Table 5-28 Compare Low Word Registers

Tick Timer 0 Compare Value Low Word - 0xFFC80206
REG Tick Timer 1 Compare Value Low Word - 0xFFC80306
Tick Timer 2 Compare Value Low Word - 0xFFC80406
Bit 15
Field TickTimer Compare Value Low Word (16-bits)
OPER R/W
RESET 0x0000
116
14 13 12 11 10
14 13 12 11 10
9 8 7 6 5
9 8 7 6 5
MVME2502 Installation and Use (6806800R96L)
Memory Maps and Registers
4 3 2 1 0
4 3 2 1 0