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Discussion Groups | TMS320C55x | Re: on chip CLKIN distribution on C5510
Technical discussions about the TI C55x DSPs (including the c5501, c5502, c5503, c5507, c5509, c5510 and OMAP5910).
on chip CLKIN distribution on C5510 - nith...@signalogic.com - Jan 19 13:10:00 2006
Hello,
If anybody could please let me know if the CLKIN input signal to the TMS320VC5510 ( driven by an external oscillator) is routed anywhere else on the chip other than the clock generation unit and if so please give the details.
Specifically, I would like to know if the CLKIN is fed to to the internal memory interface unit directly, bypassing the clock generation unit. The functional diagram in the datasheet does not indicate anything like this. Please clarify and elaborate.
Any information or reference to a document with this information would be appreciated.
Thank you
Nithin
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Re: on chip CLKIN distribution on C5510 - Jeff Brower - Jan 20 10:01:00 2006
A follow up to this...
We checked with TI tech support and they said no, CLKIN goes nowhere else but DLL
(internal clock generation unit). The only doubts that linger in my mind are:
-whether the HPI state-machine uses CLKIN for sampling
-there is a difference with C5510 since it has a DLL,
not a PLL
-Jeff nithin@nith... wrote:
>
> Hello,
>
> If anybody could please let me know if the CLKIN input signal to the TMS320VC5510 ( driven by an external oscillator) is routed anywhere else on the chip other than the clock generation unit and if so please give the details.
>
> Specifically, I would like to know if the CLKIN is fed to to the internal memory interface unit directly, bypassing the clock generation unit. The functional diagram in the datasheet does not indicate anything like this. Please clarify and elaborate.
>
> Any information or reference to a document with this information would be appreciated.
>
> Thank you
> Nithin
(You need to be a member of c55x -- send a blank email to c55x-subscribe@yahoogroups.com )