Errata Sheet - Infineon
Errata Sheet - Infineon
Errata Sheet - Infineon
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<strong>Errata</strong> <strong>Sheet</strong><br />
Functional Deviations<br />
ld.w d0, [a1] ;; This load will be executed fresh from<br />
memory with a refill.<br />
;; Read data will be coherent with rest<br />
of memory.<br />
FADC_TC.005 Equidistant multiple channel-timers<br />
The description is an example for timer_1 and timer_2, but can also affect all<br />
other combinations of timers.<br />
Timer_1 and Timer_2 are running with different reload-values. Both timers<br />
should start conversions with the requirement of equidistant timing.<br />
Problem description:<br />
Timer_1 becomes zero and starts a conversion. Timer_2 becomes zero during<br />
this conversion is running and sets the conversion-request-bit of channel_2. At<br />
the end of the conversion for channel_1 this request initiates a start for<br />
channel_2. But the Timer_2 is reloaded only when setting the request-bit for<br />
channel_2 and is decremented during the conversion of channel_1.<br />
The correct behavior would be a reload when the requested conversion (of<br />
channel_2) is started.<br />
Therefore the start of conversion for channel_2 is delayed by maximum one<br />
conversion-time. After this delay it will be continued with equidistant conversionstarts.<br />
Please refer to the following figure.<br />
TC1767, EES-AD, ES-AD, AD 34/73 Rel. 1.4, 11.12.2009
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