SBAU474 December 2024 TAA3040
The AC-MB provides the digital audio digital signals to the evaluation module from the universal serial bus (USB), optical, stereo jack, and external audio serial interface (ASI) header. Figure 5-1 shows a block diagram of the ASI routing on the AC-MB.
Figure 5-1 AC-MB Audio Serial Interface RoutingSwitch SW2 on the AC-MB selects the audio serial bus that interfaces with the TAA3040EVB. Next to switch SW2, the AC-MB has a quick reference table to identify the audio serial interface source options and switch settings. The AC-MB acts as the master for the audio serial interface, with three different modes of operation (see Figure 5-2): USB, optical or analog, or external ASI.