VS1010C

Designing hardware and software for systems that use the VS1010 MP3 Audio DSP Microcontroller.
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JohnsonSJ
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VS1010C

Post by JohnsonSJ » Mon 2018-05-07 7:31

In the evaluation board schematics for VS1010C, it is observed that the crystals are connected to Analog GND through the compensating capacitors. Our earlier experience is connecting it to Digital GND, any specific reason for connecting it to AGND?

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pasi
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Re: VS1010C

Post by pasi » Tue 2018-05-08 15:41

A good question. The capacitors of XTAL and XTAL_RTC should use DGND.

I think AGND got used for XTAL_RTC mainly for drawing reasons, because the XTAL_RTC pins are on the "analog side" of the chip. And then XTAL pins just followed that. Both grounds should be connected together under the VS1010, so depending on the application it may not make a big difference.

We will update the schematics.
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JohnsonSJ
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Re: VS1010C

Post by JohnsonSJ » Wed 2018-05-09 6:35

OK

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