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C161 Datasheet(PDF) 210 Page - Infineon Technologies AG |
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C161 Datasheet(HTML) 210 Page - Infineon Technologies AG |
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210 / 400 page  &3, 7KH*HQHUDO 3XUSRVH 7LPHU8QLWV User’s Manual 10-18 1999-08 Auxiliary Timer in Reload Mode Reload mode for the auxiliary timers T2 and T4 is selected by setting bit field TxM in the respective register TxCON to ‘100 B’. In reload mode the core timer T3 is reloaded with the contents of an auxiliary timer register, triggered by one of two different signals. The trigger signal is selected the same way as the clock source for counter mode (see table above), i.e. a transition of the auxiliary timer’s input or the output toggle latch T3OTL may trigger the reload. Note: When programmed for reload mode, the respective auxiliary timer (T2 or T4) stops independent of its run flag T2R or T4R. Figure 10-12 GPT1 Auxiliary Timer in Reload Mode Upon a trigger signal T3 is loaded with the contents of the respective timer register (T2 or T4) and the interrupt request flag (T2IR or T4IR) is set. Note: When a T3OTL transition is selected for the trigger signal, also the interrupt request flag T3IR will be set upon a trigger, indicating T3’s overflow or underflow. Modifications of T3OTL via software will NOT trigger the counter function of T2/T4. Reload Register Tx Core Timer T3 Up/Down Source/Edge Select T3OTL Interrupt Request T3OE T3OUT TxIN Input Clock TxI *) Interrupt Request MCB02035 *) Note: Line only affected by over/underflows of T3, but NOT by software modifications of T3OTL. x=2,4 |
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