DSP Interrupts

System Module Technical Documentation

INTO is used for the reveiver A/D converter in RFI2. The ASIC reads the data from the receiver path A/D converter in RFI2 at every data available signal activation from the RFI2. After the data transfer when the data is stored in the ASIC the ASIC generates a receiver interrupt to the DSP using INT1 (INTO?) signal. The DSP enters the interrupt routine and services the interrupt by reading the data from the ASIC.

INT1 signal is used for the auxiliary A/D converter channels in RFI2. These A/D channles are used for baseband battery voltage and system board temperature monitoring . Two channels are used for battery monitoring. The start of the A/D conversion task is timed in such a way that auxiliary channel 0 results are measured during transmission when the PA is active and channel 7 is measuring when the PA is off.

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