9.3.16.4 Clocking Faults

The TAS2560 has two clock error detection blocks. The first is used to monitor the Audio Serial Interfaces (ASI). If a clock error is detected on the ASI interfaces audio artifacts can occur at the Class-D output. When enabled the ASI clock error detection can soft-mute the device, then shutdown the Class-D and DSP core. The second clock error detection block can monitor the internal DAC, ADC, and PLL clocks and used when the PLL clock may be from a different source than the ASI clocks. When a clock error is detected the output is soft-muted and the Class-D powered down. Information on configuring the error detection is in section Clock Error Detection

When a clocking error occurs the following sequence should be performed to restart the device.

• Clear the clock error interrupts by reading the sticky flags at register INT_DET_1 fields INT_CLK1 and INT_CLK2
• Clear the power error field PWR_ERR in register PWR_CTRL_2