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Is the wm8731 a stereo or mono codec?
Codec with Headphone Driver The WM8731 is a low power stereo codec with an integrated headphone driver. Stereo line and mono microphone level audio inputs are provided, along with a mute function, programmable line level volume control and a bias voltage output suitable for an electric type microphone.
Which is the slave address for the wm8731 codec?
The detailed discussion of slave address selection for WM8731 is given on page number 43 of its datasheet. In the present addon board, CSB pin is grounded and as a result, for writing to the codec, we use Slave address 0x34. Own address is chosen as 0x33.
How does the Cirrus Logic wm8731 interface work?
The device is controlled via a 2 or 3 wire serial interface. The interface provides access to all features including volume controls, mutes, de-emphasis and extensive power management facilities.
How does the stm32l board work as a Master?
STM32L board acts as a master to initiate communication between the Audio codec board and itself. Each entity in I2C communication has a unique address. These addresses are predefined for different modules. The detailed discussion of slave address selection for WM8731 is given on page number 43 of its datasheet.
What kind of codec does Cirrus Logic wm8944?
The WM8944 is a highly integrated low power hi-fi codec designed for portable devices such as digital still cameras. Up to 2 analog inputs may be connected, and a stereo digital microphone interface is also provided.
What kind of audio input does a Cirrus microphone use?
Stereo line and mono microphone level audio inputs are provided, along with a mute function, programmable line level volume control and a bias voltage output suitable for an electric type microphone. Digital audio input word lengths from 16-32 bits and sampling rates from 8 kHz to 96 kHz are supported.
How many analog inputs does a Cirrus Logic mixer need?
Up to 2 analog inputs may be connected, and a stereo digital microphone interface is also provided. Flexible output mixing options support single-ended and differential configurations, with outputs derived from the digital audio paths or from analog bypass paths.