ZHCSIM2D June 2010 – August 2021 PCM9211
PRODUCTION DATA
The PCM9211 has a power-down function that is controlled by the external RST pin or a power control register.
When the RST pin is held at GND, the PCM9211 powers down.
When the device is powered down (that is, RST = GND), all register values are cleared and reset to the respective default values. By default, all modules are powered on except for the coaxial amplifier.
The other option for powering down the device is to use the Power Control Register (Register 40h). The Power Control Register allows selective power down of the DIR, ADC, DIT, Coax Amp, and Oscillator circuit without resetting other registers to the respective default modes.
The advantage of using the registers to power down individual modules of the PCM9211 is that the registers retain the respective settings rather than resetting to default.