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PCM1789-Q1: PCM1754 + Volume control

Part Number: PCM1789-Q1
Other Parts Discussed in Thread: PCM1754-Q1, , PCM1789

Hello, Team,

We are looking for a device which could replace PCM1754-Q1 with an additional capability of a volume control.
From the datasheet, PCM1789-Q1 would be suitable device.
Our request here is to input single I2S and output Rch/Lch, with a volume control.
Volume control level is expected to be something like 0dB ~ -100dB.

From datasheet p31, ATDAx[7:0] seems to be the function we are looking for; is this correct understanding?
What is the intended use for this function?

Also, are there any other IC which has similar capability?