Cirrus Logic CDB42448 - Manual (Page 25)

CDB42448
DS648DB2 25
page 10).
5.7.4 DSP MCLK (MCLK_M/S)
Default = 0
0 - DSP MCLK is a slave to the MCLK bus.
1 - DSP MCLK masters MCLK bus.
Function:
Enables/disables the external DSP MCLK output buffer on the MCLK bus.