After repeatedly reading through the datasheet of the CS4344, I am having trouble fully understanding the purpose of the MCLK pin in serial operation.
In my research I have found that MCLK pins are typically mentioned in I2S operation of audio DACs like this one, however I am trying to use this DAC with serial (referred to as 'left justified' in the datasheet) operation. I get that MCLK is used as the main clock for the internals of the DAC. Do I need to apply a signal to this MCLK pin or is it not needed in serial mode?
The datasheet also mentions external SCLK mode, I understand this as slave mode essentially. In external mode, can I just send data to it using DIN and SCLK? Will MCLK be generated internally or must I generate this as well?