PCM1725 DAC and Arduino UNO

I wanted to try soldering a little SOIC package for the first time so I took an old BB (now TI) PCM1725 DAC and soldered it to the 14 pin adapter section of one of those generic Prototype Shields.

QUESTION:
The datasheet for this old chip shows …
INPUT DATA FORMAT
PCM1725 can accept input data in either normal (MSB-first,
right-justified) or I2S formats. When pin 13 (FORMAT) is
LOW, normal data format is selected; a HIGH on pin 13
selects I2S format.

What exactly does the data look like that would be connected to the DIN pin?
Is a plain Arduino UNO capable of making use of a chip like this?
I’m just curious and want to learn more about DACs.
Are there any good example of using PCM / I2S with Arduino I should be looking at?

Start from atmel.com , get data sheet for sam3x8e, there is a chapter SSC. Atmel’s ASF has an example how to program SSC to interface with Wolfson WM8731, have a look if you can tweak it