数字对数电位器PGA2311的驱动程序，PGA2311是spi总线方式，可以级联使用，一般用于音量的数字调节，每片双声道-Figures on the number of potentiometers PGA2311 driver, PGA2311 is spi bus, it can be cascaded to use, the general figures for the volume adjustment, each dual

PGA2310 preamplifier，音量调节，通道切换，遥控，-PGA2310 preamplifier, adjust the volume, channel switching, remote control,