TAS5756M, MCLK CMOS oscillator source

Jon Smirl

Other Parts Discussed in Thread: TAS5756M

This is from page 37 of the TAS5756M datasheet. What is the "MCLK CMOS oscillator source" referring to? Is there a crystal oscillator on the chip which would let me directly hook a crystal up to it?

over 10 years ago

0 Damian Lewis over 10 years ago

TI__Mastermind 34775 points

Hello Jon,

It means that you can provide an external 3.3V (CMOS level) clock to TAS5756M MCLK pin (e.g. 24.567MHz) and use the internal PLL dividers to generate the SCLK (also known as bit clock) and LRCLK (also known as frame sync clock).

0 Jon Smirl over 10 years ago in reply to Damian Lewis

Prodigy 200 points

Thanks, that's what I thought. Just wanted to make sure I wasn't needlessly building an oscillator circuit.

The host CPU can't generate an accurate MCLK so we are adding a crystal.

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TAS5756M, MCLK CMOS oscillator source