[SI-LIST] Single crystal driving two different inputs of a chip
- From: "Rohan Hubli" <Rohan.Hubli@xxxxxxxxxxxxxxxx>
- To: <si-list@xxxxxxxxxxxxx>
- Date: Tue, 28 Jun 2005 14:37:52 -0700
Folks,=20
Can a single crystal be driving two different inputs of a chip that feed =
into=20
two sensitive analog blocks within a chip. Has anyone had any experience =
doing this kind of a thing on the board ?=20
We are facing an issue where a 27Mhz crystal clock needs to be hooked up =
to drive=20
two sensitive analog cores.=20
If we make the connection internal to the chip then the jitter due to =
(trace delay + buffer delay + process variations)=20
has significant impact on the audio quality.
Not to mention the fact that any issues that surface and subsequent =
fixes with this approach will have significant=20
respin costs for the chip.=20
Your inputs would be greatly appreciated.=20
Thanks
Rohan=20
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