User manual

Hardware

2.9 24-BIT AUDIO CODEC

Using the WM8731 24-bit Audio Codec, the Multimedia Expansion Board can run appli-

cations that require audio playback and/or recording, as shown in Figure 2-20. For

playing back audio, the Multimedia Expansion Board provides two output jacks, a

headphone and line out jack, which are shown in Figure 2-21. A microphone input jack

is also provided for audio recording. The WM8731 interfaces to the PIC32

microcontroller via the SPI and I

C buses.

FIGURE 2-20: WM8731 24-BIT AUDIO CODEC

FIGURE 2-21: HEADPHONE, LINE OUT AND MICROPHONE JACKS