Difference between revisions of "TIMER Registers"

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(Created page with "== Registers == {| class="wikitable" border="1" ! NAME ! PHYSICAL ADDRESS ! WIDTH |- | REG_TM0VAL | 0x10003000 | 2 |- | REG_TM0CNT | 0x10003002 | 2 |- | REG_TM1VAL | 0x1000300...")
 
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Revision as of 22:39, 12 August 2012

Registers

NAME PHYSICAL ADDRESS WIDTH
REG_TM0VAL 0x10003000 2
REG_TM0CNT 0x10003002 2
REG_TM1VAL 0x10003004 2
REG_TM1CNT 0x10003006 2
REG_TM2VAL 0x10003008 2
REG_TM2CNT 0x1000300A 2
REG_TM3VAL 0x1000300C 2
REG_TM3CNT 0x1000300E 2

Timer value

Writing to REG_TMxVAL loads a starting value for one of the 4 timers, while reading it will show the current timer value.

Timer control

BIT DESCRIPTION
0-1 Prescaler select (0=F/1, 1=F/64, 2=F/256, 3=F/1024)
2 Count-up (0=Disabled, 1=Enabled)
3-5 Not used
6 IRQ enable (0=Disabled, 1=IRQ on timer value overflow)
7 Start/Stop (0=Stop, 1=Start)

Count-up

When count-up is enabled, the timer value will increase every time the previous timer overflows.