техника отладки высокочастотных схем
2020-09-21
Some problems should be paid attention to during hardware debugging. For example, before hardware debugging, the circuit board should be carefully inspected to observe whether there is a short circuit or open circuit (because the DSP PCB board wiring is generally dense and thin, the probability of this occurrence is relatively high). After power-on, whether some chips are particularly hot in your hands. If you find that some chips are hot, you need to immediately power off and recheck the circuit. After troubleshooting, check whether the crystal is oscillating and whether the reset is correct and reliable. Then use an oscilloscope to check whether the signals of the CLK-OUT1 and CLK-OUT2 pins of the DSP are normal. If they are normal, it indicates that the DSP itself is basically working normally.
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