The subsystem can output Audio Clock Regeneration (ACR) signals that allow receiver audio peripherals to regenerate the audio clock.
The audio clock regeneration architecture is not part of the HDMI 1.4/2.0 RX Subsystem. You must provide an audio clock to the application. This can be achieved by using an internal PLL or external clock source, depending on the audio clock requirements, audio sample frequency and jitter. When the HDMI 1.4/2.0 RX Subsystem is used in DVI mode, the ACR outputs can be left unconnected.