SLAU944 August 2024 TAS2320
In this mode, the audio serial interface clocks for the evaluation board are provided through connector J7 from an external source. This architecture allows the use of an external system to communicate with the evaluation board, such as a different host processor or test equipment (for instance, Audio Precision PSIA). The clocks generated from the USB interface and PCM9211 are isolated with this setting. The AC-MB audio setting for the external mode of operation is shown in Figure 3-3.
How to connect the external audio interface with the bottom row for the ground and the top row for signals is shown in Figure 3-4.