CVDD and DVDD Decoupling

Samir,

as written in my first reply:

Some care must be taken with "analog" supply voltages (PLL and USB): these
are highly sensitive, and you should follow TI's decoupling and filter
recomendations.

Any noise on the PLL power supply - and there will be plenty of noise on
CVDD! - will directly couple into the PLL filter and oscillator. This may
cause glitches on the internal clocks and "strange" sporadic failures.

Best Regards,
Adolf Klemenz
At 11:26 03.09.2010 +0100, Samir Bendoukha wrote:
>One more question. Is it possible to connect the PLL_VDDA to the the DSP's
>CVDD? I know it is supposed to supplied separately but I don't know why
>and would really love to connect it to CVDD.

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Thanks for the valuable help everyone.

One more question. Is it possible to connect the PLL_VDDA to the the DSP's
CVDD? I know it is supposed to supplied separately but I don't know why and
would really love to connect it to CVDD.

--
Kind regards,
Samir.

---------------------------
Samir Bendoukha

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