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ARM Dual-Timer Module (SP804) Technical Reference Manual

seki.hikaru

ARM Dual-Timer Module (SP804) Technical Reference Manual r1p0 issue D (DDI0271.pdf) has wrong descriptions.

#1 p2-9

Free-running mode
Free-running mode is selected by setting the following bits in the TimerControl
Register:
• set TimerMode bit to 1
• set OneShot bit to 0.

-> TmerMode should be 0 in Free-runnng mode

#2 p2-10

Periodic mode
Periodic mode is selected by setting the following bits in the TimerControl Register:
• set TimerMode bit to 0
• set OneShot bit to 0.

-> TimerMode should be 1 in Periodic mode.

#3 p2-13

Table 2-1 Expressions for calculating timer intervals

Periodic and One-shot : (TIMCLKENXDIV x PRESCALEDIV)/TIMCLKFREQ x TimerXLoad

-> Timer counter is decremented from TimerXLoad value to 0. So, this equation should be

     (TIMCLKENXDIV x PRESCALEDIV)/TIMCLKFREQ x (TimerXLoad+1)

Please fix it.

Best regards.

0