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PGA280读寄存器问题

Other Parts Discussed in Thread: PGA280

PGA280作为前级放大器,通过SPI可以写入寄存器改变增益和内部开关,但是无法读到寄存器的值。通过spi写入读寄存器命令0X83,SDO口波形如下,非常怪异