Is IVA3 another C64x?

[Jonathan Brandmeyer]

It is not clear to me from TI's marketing literature whether or not
the IVA3 hardware accelerator is a descendant of the C64x uarch that
is present in the OMAP3 line. What sort of DSP does it have?

Will Pandaboard be able to redistribute the level of CPU and
peripheral documentation that is normally only available to the high-
volume market that OMAP4 is currently targeting?

[Vladimir Pantelic]

Jonathan Brandmeyer wrote:
> It is not clear to me from TI's marketing literature whether or not
> the IVA3 hardware accelerator is a descendant of the C64x uarch that
> is present in the OMAP3 line. What sort of DSP does it have?

IVA3 has a cut down version of the OMAP3 DSP, its a C64x but with
only half the execution units. DSP SW will need to be recompiled and/or
rewritten AFAIK.

> Will Pandaboard be able to redistribute the level of CPU and
> peripheral documentation that is normally only available to the high-
> volume market that OMAP4 is currently targeting?

good question

[Jayabharath Goluguri]

On 10/07/2010 10:29 AM, Vladimir Pantelic wrote:
> Jonathan Brandmeyer wrote:
>> It is not clear to me from TI's marketing literature whether or not
>> the IVA3 hardware accelerator is a descendant of the C64x uarch that
>> is present in the OMAP3 line. What sort of DSP does it have?
> IVA3 has a cut down version of the OMAP3 DSP, its a C64x but with
> only half the execution units. DSP SW will need to be recompiled and/or
> rewritten AFAIK.

In OMAP4430 Chipset (used on PandaBoard) we do have the DSP subsystem
aswell as IVA-HD subsystem.
The comment vladimir made are applicable to the DSP subsystem and
details of the DSP subsystem in this chipset are not available in public
domain (Ref: TRM at
http://focus.ti.com/general/docs/wtbu/wtbudocumentcenter.tsp?templateId=6123&navigationId=12037#62
Sec Chapter 5. DSP Subsystem, Chapter 6. IVA-HD )

However, all imaging a video codecs run on the IVA-HD subsystem with
control from the dual cortex-M3 subsystem. IVA-HD subsystem is a bunch
of accelerators and not really a C64x decedent. You can refer to Sec
6.1.2 of above TRM)

>> Will Pandaboard be able to redistribute the level of CPU and
>> peripheral documentation that is normally only available to the high-
>> volume market that OMAP4 is currently targeting?
> good question

PandaBoard is not a TI product or evaludation module. It's a community
effort in which several TI engineers participate & contribute.
So, the right question to ask would be will TI provide the level of
documentation for OMAP44xx silicon to broad market customer base (once
silicon is available for purchase -- not yet today) that is normally
available to high volume OEMs . The answer AFAIK is in work - stay
tuned :)

--Jayabharath

[Deva R]

On Thu, Oct 7, 2010 at 8:59 PM, Vladimir Pantelic <vlad...@gmail.com> wrote:
> Jonathan Brandmeyer wrote:
>>
>> It is not clear to me from TI's marketing literature whether or not
>> the IVA3 hardware accelerator is a descendant of the C64x uarch that
>> is present in the OMAP3 line.  What sort of DSP does it have?
>
> IVA3 has a cut down version of the OMAP3 DSP, its a C64x but with
> only half the execution units. DSP SW will need to be recompiled and/or
> rewritten AFAIK.

More description on OMAP4 IVA subsystem -
http://omappedia.org/wiki/Ducati_For_Dummies

>> Will Pandaboard be able to redistribute the level of CPU and
>> peripheral documentation that is normally only available to the high-
>> volume market that OMAP4 is currently targeting?
>
> good question
>

http://focus.ti.com/pdfs/wtbu/OMAP4430_ES2.0_Public_TRM_vJ.pdf
or latest version from page
http://focus.ti.com/general/docs/wtbu/wtbudocumentcenter.tsp?templateId=6123&navigationId=12667

--
Regards,
Deva
www.bittoggler.com