C6455 or C6416 DSK?

Hi,

TMS320C6455 is based on C64x+ (advanced C64x) core. TMS320C6416 is
based on C64x core. Price for both DSK is same and TMS320C6455 DSK is
introduced recently. Also C6455 DSK has on board 256MB DDR2. Does it
mean that I have to select TMS320C6455 DSK? If I want to buy it for
video and imaging applications (mainly for codecs development), then
which one would be better? and Why? Can you please explain in brief?

Awaiting reply from experts of this forum at the earliest.

Thanks and warm regards,
Jigar. Start a New Thread

Hi,
of sure C6455 is the best choice for video and imaging applications
for many reasons: DSP Core match more powerful, 2MB of internal
memory, DDR2 interface, RapidIO interconnection and so on (you can
find more information on TI web site).
Unfortunately C6455 DSPs are an experimental products (designated as
TMX) that are in the formative or design phase of development. Then,
you can found unexpected problems when you use it. For these reason I
had chosen C6414 DSP (TMS prefix: Fully qualified production device)
for my project.
I don't know your target project, but C6416 DSP is very good device
for video and imaging applications.
Anyway I never worked with TMX320C6455 DSP, my be it works very good.
if someone had worked with it, can you give us some information about
its operation?

regards
Gio
--- In c..., "jigs_dsp" wrote:
>
> Hi,
>
> TMS320C6455 is based on C64x+ (advanced C64x) core. TMS320C6416 is
> based on C64x core. Price for both DSK is same and TMS320C6455 DSK
is
> introduced recently. Also C6455 DSK has on board 256MB DDR2. Does
it
> mean that I have to select TMS320C6455 DSK? If I want to buy it for
> video and imaging applications (mainly for codecs development),
then
> which one would be better? and Why? Can you please explain in
brief?
>
> Awaiting reply from experts of this forum at the earliest.
>
> Thanks and warm regards,
> Jigar.
> Start a New Thread

Gio-

> of sure C6455 is the best choice for video and imaging applications
> for many reasons: DSP Core match more powerful, 2MB of internal
> memory, DDR2 interface, RapidIO interconnection and so on (you can
> find more information on TI web site).
> Unfortunately C6455 DSPs are an experimental products (designated as
> TMX) that are in the formative or design phase of development. Then,
> you can found unexpected problems when you use it. For these reason I
> had chosen C6414 DSP (TMS prefix: Fully qualified production device)
> for my project.

This is excellent advice. For engineers considering to design with 6455
at this time, here are some prototype suggestions you're not likely to
read on TI website:

-bring out all unused pins to test-point; TI may make
a change and need to use the pins in some different
way

-allow for easy change to oscillator rate, in case
TMX part is not operating correctly at specified
frequencies

-make sure power supply / switching regulator is easily
adjustable. TMX devices often have issues with Vcc
level and ripple. For example, it may be necessary to
raise Vcc level somewhat over the spec. This has
happened to me several times before with early
versions of a DSP

-be ultra careful with gnd planes near the device. TMX
devices often have issues with gnd noise and return
current. The famous example is early versions of TMX
C6713 BGA package which had 256 pins. Soon TI
introduced a new package -- same chip but with 272
pins. What were the extra 16 pins? All Gnd pins

-make sure boot mode and other config Rs are big ones
easy to change, and easy to debug (top side of board).
It happens often that you want to try different configs
when one more or another on TMX chip is not working as
expected

-Jeff

> --- In c..., "jigs_dsp" wrote:
>>
>> Hi,
>>
>> TMS320C6455 is based on C64x+ (advanced C64x) core. TMS320C6416 is
>> based on C64x core. Price for both DSK is same and TMS320C6455 DSK
> is
>> introduced recently. Also C6455 DSK has on board 256MB DDR2. Does
> it
>> mean that I have to select TMS320C6455 DSK? If I want to buy it for
>> video and imaging applications (mainly for codecs development),
> then
>> which one would be better? and Why? Can you please explain in
> brief?
>>
>> Awaiting reply from experts of this forum at the earliest.
>>
>> Thanks and warm regards,
>> Jigar. Start a New Thread

Jeff/Gio/Jigar--

Great thread.Thanks for all the valuable info.

--Bhooshan

On 7/5/06, Jeff Brower wrote:
>
> Gio-
> > of sure C6455 is the best choice for video and imaging applications
> > for many reasons: DSP Core match more powerful, 2MB of internal
> > memory, DDR2 interface, RapidIO interconnection and so on (you can
> > find more information on TI web site).
> > Unfortunately C6455 DSPs are an experimental products (designated as
> > TMX) that are in the formative or design phase of development. Then,
> > you can found unexpected problems when you use it. For these reason I
> > had chosen C6414 DSP (TMS prefix: Fully qualified production device)
> > for my project.
>
> This is excellent advice. For engineers considering to design with 6455
> at this time, here are some prototype suggestions you're not likely to
> read on TI website:
>
> -bring out all unused pins to test-point; TI may make
> a change and need to use the pins in some different
> way
>
> -allow for easy change to oscillator rate, in case
> TMX part is not operating correctly at specified
> frequencies
>
> -make sure power supply / switching regulator is easily
> adjustable. TMX devices often have issues with Vcc
> level and ripple. For example, it may be necessary to
> raise Vcc level somewhat over the spec. This has
> happened to me several times before with early
> versions of a DSP
>
> -be ultra careful with gnd planes near the device. TMX
> devices often have issues with gnd noise and return
> current. The famous example is early versions of TMX
> C6713 BGA package which had 256 pins. Soon TI
> introduced a new package -- same chip but with 272
> pins. What were the extra 16 pins? All Gnd pins
>
> -make sure boot mode and other config Rs are big ones
> easy to change, and easy to debug (top side of board).
> It happens often that you want to try different configs
> when one more or another on TMX chip is not working as
> expected
>
> -Jeff
> > --- In c... , "jigs_dsp"
> wrote:
> >>
> >> Hi,
> >>
> >> TMS320C6455 is based on C64x+ (advanced C64x) core. TMS320C6416 is
> >> based on C64x core. Price for both DSK is same and TMS320C6455 DSK
> > is
> >> introduced recently. Also C6455 DSK has on board 256MB DDR2. Does
> > it
> >> mean that I have to select TMS320C6455 DSK? If I want to buy it for
> >> video and imaging applications (mainly for codecs development),
> > then
> >> which one would be better? and Why? Can you please explain in
> > brief?
> >>
> >> Awaiting reply from experts of this forum at the earliest.
> >>
> >> Thanks and warm regards,
> >> Jigar.
>
>
>

--
-------------------------------
"I've missed more than 9000 shots in my career.
I've lost almost 300 games. 26 times I've been trusted to take the game
winning shot and missed.
I've failed over and over again in my life.
And that is why I succeed."
-- Michael Jordan
-------------------------------- Start a New Thread

Lakshman--
I think the discussion was not on software development. If it were so,
your advice is valid.. The discussion I believe was on
prototype/system design using C6455.

--Bhooshan

On 7/5/06, Lakshman wrote:
> Hi,
>
> If you are developing advanced video applications go
> for C6455(C64x+ core).You can reuse this code for
> OMAP2430/OMAP3430 platforms since the IVA2 is based on
> C64x+. C6416 DSK is obsolete now and it's not widely
> used for video applications.
>
> Thanks and regards,
> -Lakshman
>
> --- Bhooshan Iyer wrote:
>
> > Jeff/Gio/Jigar--
> >
> > Great thread.Thanks for all the valuable info.
> >
> > --Bhooshan
> >
> > On 7/5/06, Jeff Brower
> > wrote:
> > >
> > > Gio-
> > >
> > >
> > > > of sure C6455 is the best choice for video and
> > imaging applications
> > > > for many reasons: DSP Core match more powerful,
> > 2MB of internal
> > > > memory, DDR2 interface, RapidIO interconnection
> > and so on (you can
> > > > find more information on TI web site).
> > > > Unfortunately C6455 DSPs are an experimental
> > products (designated as
> > > > TMX) that are in the formative or design phase
> > of development. Then,
> > > > you can found unexpected problems when you use
> > it. For these reason I
> > > > had chosen C6414 DSP (TMS prefix: Fully
> > qualified production device)
> > > > for my project.
> > >
> > > This is excellent advice. For engineers
> > considering to design with 6455
> > > at this time, here are some prototype suggestions
> > you're not likely to
> > > read on TI website:
> > >
> > > -bring out all unused pins to test-point; TI may
> > make
> > > a change and need to use the pins in some
> > different
> > > way
> > >
> > > -allow for easy change to oscillator rate, in case
> > > TMX part is not operating correctly at specified
> > > frequencies
> > >
> > > -make sure power supply / switching regulator is
> > easily
> > > adjustable. TMX devices often have issues with Vcc
> > > level and ripple. For example, it may be necessary
> > to
> > > raise Vcc level somewhat over the spec. This has
> > > happened to me several times before with early
> > > versions of a DSP
> > >
> > > -be ultra careful with gnd planes near the device.
> > TMX
> > > devices often have issues with gnd noise and
> > return
> > > current. The famous example is early versions of
> > TMX
> > > C6713 BGA package which had 256 pins. Soon TI
> > > introduced a new package -- same chip but with 272
> > > pins. What were the extra 16 pins? All Gnd pins
> > >
> > > -make sure boot mode and other config Rs are big
> > ones
> > > easy to change, and easy to debug (top side of
> > board).
> > > It happens often that you want to try different
> > configs
> > > when one more or another on TMX chip is not
> > working as
> > > expected
> > >
> > > -Jeff
> > >
> > >
> > > > --- In c...
> > , "jigs_dsp"
> > > wrote:
> > > >>
> > > >> Hi,
> > > >>
> > > >> TMS320C6455 is based on C64x+ (advanced C64x)
> > core. TMS320C6416 is
> > > >> based on C64x core. Price for both DSK is same
> > and TMS320C6455 DSK
> > > > is
> > > >> introduced recently. Also C6455 DSK has on
> > board 256MB DDR2. Does
> > > > it
> > > >> mean that I have to select TMS320C6455 DSK? If
> > I want to buy it for
> > > >> video and imaging applications (mainly for
> > codecs development),
> > > > then
> > > >> which one would be better? and Why? Can you
> > please explain in
> > > > brief?
> > > >>
> > > >> Awaiting reply from experts of this forum at
> > the earliest.
> > > >>
> > > >> Thanks and warm regards,
> > > >> Jigar.
> > >
> > >
> > >
> >
> >
> >
> > --
> >
> -------------------------------
> > "I've missed more than 9000 shots in my career.
> > I've lost almost 300 games. 26 times I've been
> > trusted to take the game
> > winning shot and missed.
> > I've failed over and over again in my life.
> > And that is why I succeed."
> > -- Michael Jordan
> >
> --------------------------------
> >
> __________________________________________________
--
-------------------------------
"I've missed more than 9000 shots in my career.
I've lost almost 300 games. 26 times I've been trusted to take the
game winning shot and missed.
I've failed over and over again in my life.
And that is why I succeed."
-- Michael Jordan
-------------------------------- Start a New Thread

Hi,

If you are developing advanced video applications go
for C6455(C64x+ core).You can reuse this code for
OMAP2430/OMAP3430 platforms since the IVA2 is based on
C64x+. C6416 DSK is obsolete now and it's not widely
used for video applications.

Thanks and regards,
-Lakshman

--- Bhooshan Iyer wrote:

> Jeff/Gio/Jigar--
>
> Great thread.Thanks for all the valuable info.
>
> --Bhooshan
>
> On 7/5/06, Jeff Brower
> wrote:
> >
> > Gio-
> >
> >
> > > of sure C6455 is the best choice for video and
> imaging applications
> > > for many reasons: DSP Core match more powerful,
> 2MB of internal
> > > memory, DDR2 interface, RapidIO interconnection
> and so on (you can
> > > find more information on TI web site).
> > > Unfortunately C6455 DSPs are an experimental
> products (designated as
> > > TMX) that are in the formative or design phase
> of development. Then,
> > > you can found unexpected problems when you use
> it. For these reason I
> > > had chosen C6414 DSP (TMS prefix: Fully
> qualified production device)
> > > for my project.
> >
> > This is excellent advice. For engineers
> considering to design with 6455
> > at this time, here are some prototype suggestions
> you're not likely to
> > read on TI website:
> >
> > -bring out all unused pins to test-point; TI may
> make
> > a change and need to use the pins in some
> different
> > way
> >
> > -allow for easy change to oscillator rate, in case
> > TMX part is not operating correctly at specified
> > frequencies
> >
> > -make sure power supply / switching regulator is
> easily
> > adjustable. TMX devices often have issues with Vcc
> > level and ripple. For example, it may be necessary
> to
> > raise Vcc level somewhat over the spec. This has
> > happened to me several times before with early
> > versions of a DSP
> >
> > -be ultra careful with gnd planes near the device.
> TMX
> > devices often have issues with gnd noise and
> return
> > current. The famous example is early versions of
> TMX
> > C6713 BGA package which had 256 pins. Soon TI
> > introduced a new package -- same chip but with 272
> > pins. What were the extra 16 pins? All Gnd pins
> >
> > -make sure boot mode and other config Rs are big
> ones
> > easy to change, and easy to debug (top side of
> board).
> > It happens often that you want to try different
> configs
> > when one more or another on TMX chip is not
> working as
> > expected
> >
> > -Jeff
> >
> >
> > > --- In c...
> , "jigs_dsp"
> > wrote:
> > >>
> > >> Hi,
> > >>
> > >> TMS320C6455 is based on C64x+ (advanced C64x)
> core. TMS320C6416 is
> > >> based on C64x core. Price for both DSK is same
> and TMS320C6455 DSK
> > > is
> > >> introduced recently. Also C6455 DSK has on
> board 256MB DDR2. Does
> > > it
> > >> mean that I have to select TMS320C6455 DSK? If
> I want to buy it for
> > >> video and imaging applications (mainly for
> codecs development),
> > > then
> > >> which one would be better? and Why? Can you
> please explain in
> > > brief?
> > >>
> > >> Awaiting reply from experts of this forum at
> the earliest.
> > >>
> > >> Thanks and warm regards,
> > >> Jigar.
> >
> >
> > --
>
-------------------------------
> "I've missed more than 9000 shots in my career.
> I've lost almost 300 games. 26 times I've been
> trusted to take the game
> winning shot and missed.
> I've failed over and over again in my life.
> And that is why I succeed."
> -- Michael Jordan
>
--------------------------------
>
__________________________________________________ Start a New Thread

Every advise is very accepts.
Anyway, I'm very curious to know if TMX320C6455 works well.
That is, TI speak about some benefit:
- 20% higher cycle performance improves overall system performance
- 20-30% smaller code size reduces system cost
- Better Debug
is it true?
More, is serial RapidIO Bus reliable interconnection?
And what about DDR2 memory controller?

Have someone some experience on this device?
This should be very important for my future prototype design.

Thanks all
Gio

--- In c..., "Bhooshan Iyer" wrote:
>
> Lakshman--
> I think the discussion was not on software development. If it were
so,
> your advice is valid.. The discussion I believe was on
> prototype/system design using C6455.
>
> --Bhooshan
>
> On 7/5/06, Lakshman wrote:
> > Hi,
> >
> > If you are developing advanced video applications go
> > for C6455(C64x+ core).You can reuse this code for
> > OMAP2430/OMAP3430 platforms since the IVA2 is based on
> > C64x+. C6416 DSK is obsolete now and it's not widely
> > used for video applications.
> >
> > Thanks and regards,
> > -Lakshman
> >
> > --- Bhooshan Iyer wrote:
> >
> > > Jeff/Gio/Jigar--
> > >
> > > Great thread.Thanks for all the valuable info.
> > >
> > > --Bhooshan
> > >
> > > On 7/5/06, Jeff Brower
> > > wrote:
> > > >
> > > > Gio-
> > > >
> > > >
> > > > > of sure C6455 is the best choice for video and
> > > imaging applications
> > > > > for many reasons: DSP Core match more powerful,
> > > 2MB of internal
> > > > > memory, DDR2 interface, RapidIO interconnection
> > > and so on (you can
> > > > > find more information on TI web site).
> > > > > Unfortunately C6455 DSPs are an experimental
> > > products (designated as
> > > > > TMX) that are in the formative or design phase
> > > of development. Then,
> > > > > you can found unexpected problems when you use
> > > it. For these reason I
> > > > > had chosen C6414 DSP (TMS prefix: Fully
> > > qualified production device)
> > > > > for my project.
> > > >
> > > > This is excellent advice. For engineers
> > > considering to design with 6455
> > > > at this time, here are some prototype suggestions
> > > you're not likely to
> > > > read on TI website:
> > > >
> > > > -bring out all unused pins to test-point; TI may
> > > make
> > > > a change and need to use the pins in some
> > > different
> > > > way
> > > >
> > > > -allow for easy change to oscillator rate, in case
> > > > TMX part is not operating correctly at specified
> > > > frequencies
> > > >
> > > > -make sure power supply / switching regulator is
> > > easily
> > > > adjustable. TMX devices often have issues with Vcc
> > > > level and ripple. For example, it may be necessary
> > > to
> > > > raise Vcc level somewhat over the spec. This has
> > > > happened to me several times before with early
> > > > versions of a DSP
> > > >
> > > > -be ultra careful with gnd planes near the device.
> > > TMX
> > > > devices often have issues with gnd noise and
> > > return
> > > > current. The famous example is early versions of
> > > TMX
> > > > C6713 BGA package which had 256 pins. Soon TI
> > > > introduced a new package -- same chip but with 272
> > > > pins. What were the extra 16 pins? All Gnd pins
> > > >
> > > > -make sure boot mode and other config Rs are big
> > > ones
> > > > easy to change, and easy to debug (top side of
> > > board).
> > > > It happens often that you want to try different
> > > configs
> > > > when one more or another on TMX chip is not
> > > working as
> > > > expected
> > > >
> > > > -Jeff
> > > >
> > > >
> > > > > --- In c...
> > > , "jigs_dsp"
> > > > wrote:
> > > > >>
> > > > >> Hi,
> > > > >>
> > > > >> TMS320C6455 is based on C64x+ (advanced C64x)
> > > core. TMS320C6416 is
> > > > >> based on C64x core. Price for both DSK is same
> > > and TMS320C6455 DSK
> > > > > is
> > > > >> introduced recently. Also C6455 DSK has on
> > > board 256MB DDR2. Does
> > > > > it
> > > > >> mean that I have to select TMS320C6455 DSK? If
> > > I want to buy it for
> > > > >> video and imaging applications (mainly for
> > > codecs development),
> > > > > then
> > > > >> which one would be better? and Why? Can you
> > > please explain in
> > > > > brief?
> > > > >>
> > > > >> Awaiting reply from experts of this forum at
> > > the earliest.
> > > > >>
> > > > >> Thanks and warm regards,
> > > > >> Jigar.
> > > >
> > > >
> > > >
> > >
> > >
> > >
> > > --
> > >
> > ------------------------------
-
> > > "I've missed more than 9000 shots in my career.
> > > I've lost almost 300 games. 26 times I've been
> > > trusted to take the game
> > > winning shot and missed.
> > > I've failed over and over again in my life.
> > > And that is why I succeed."
> > > -- Michael Jordan
> > >
> > ------------------------------
--
> > >
> >
> >
> > __________________________________________________
> >
> >
> --
> -------------------------------
> "I've missed more than 9000 shots in my career.
> I've lost almost 300 games. 26 times I've been trusted to take the
> game winning shot and missed.
> I've failed over and over again in my life.
> And that is why I succeed."
> -- Michael Jordan
> --------------------------------
> Start a New Thread

Thanks all for valuable inputs.

My further analysis is as follows:
Datasheet and Product web page of TMS320C6455 DSP refers TMS version
and silicon revision 2.0. Is TMS version of TMS320C6455 DSP
available?
http://focus.ti.com/docs/prod/folders/print/tms320c6455.html

Thanks and Regards,
Jigar.
--- In c..., "presciutti_dgl2k"
wrote:
>
> Every advise is very accepts.
> Anyway, I'm very curious to know if TMX320C6455 works well.
> That is, TI speak about some benefit:
> - 20% higher cycle performance improves overall system performance
> - 20-30% smaller code size reduces system cost
> - Better Debug
> is it true?
> More, is serial RapidIO Bus reliable interconnection?
> And what about DDR2 memory controller?
>
> Have someone some experience on this device?
> This should be very important for my future prototype design.
>
> Thanks all
> Gio
>
> --- In c..., "Bhooshan Iyer" wrote:
> >
> > Lakshman--
> > I think the discussion was not on software development. If it
were
> so,
> > your advice is valid.. The discussion I believe was on
> > prototype/system design using C6455.
> >
> > --Bhooshan
> >
> > On 7/5/06, Lakshman wrote:
> > > Hi,
> > >
> > > If you are developing advanced video applications go
> > > for C6455(C64x+ core).You can reuse this code for
> > > OMAP2430/OMAP3430 platforms since the IVA2 is based on
> > > C64x+. C6416 DSK is obsolete now and it's not widely
> > > used for video applications.
> > >
> > > Thanks and regards,
> > > -Lakshman
> > >
> > > --- Bhooshan Iyer wrote:
> > >
> > > > Jeff/Gio/Jigar--
> > > >
> > > > Great thread.Thanks for all the valuable info.
> > > >
> > > > --Bhooshan
> > > >
> > > > On 7/5/06, Jeff Brower
> > > > wrote:
> > > > >
> > > > > Gio-
> > > > >
> > > > >
> > > > > > of sure C6455 is the best choice for video and
> > > > imaging applications
> > > > > > for many reasons: DSP Core match more powerful,
> > > > 2MB of internal
> > > > > > memory, DDR2 interface, RapidIO interconnection
> > > > and so on (you can
> > > > > > find more information on TI web site).
> > > > > > Unfortunately C6455 DSPs are an experimental
> > > > products (designated as
> > > > > > TMX) that are in the formative or design phase
> > > > of development. Then,
> > > > > > you can found unexpected problems when you use
> > > > it. For these reason I
> > > > > > had chosen C6414 DSP (TMS prefix: Fully
> > > > qualified production device)
> > > > > > for my project.
> > > > >
> > > > > This is excellent advice. For engineers
> > > > considering to design with 6455
> > > > > at this time, here are some prototype suggestions
> > > > you're not likely to
> > > > > read on TI website:
> > > > >
> > > > > -bring out all unused pins to test-point; TI may
> > > > make
> > > > > a change and need to use the pins in some
> > > > different
> > > > > way
> > > > >
> > > > > -allow for easy change to oscillator rate, in case
> > > > > TMX part is not operating correctly at specified
> > > > > frequencies
> > > > >
> > > > > -make sure power supply / switching regulator is
> > > > easily
> > > > > adjustable. TMX devices often have issues with Vcc
> > > > > level and ripple. For example, it may be necessary
> > > > to
> > > > > raise Vcc level somewhat over the spec. This has
> > > > > happened to me several times before with early
> > > > > versions of a DSP
> > > > >
> > > > > -be ultra careful with gnd planes near the device.
> > > > TMX
> > > > > devices often have issues with gnd noise and
> > > > return
> > > > > current. The famous example is early versions of
> > > > TMX
> > > > > C6713 BGA package which had 256 pins. Soon TI
> > > > > introduced a new package -- same chip but with 272
> > > > > pins. What were the extra 16 pins? All Gnd pins
> > > > >
> > > > > -make sure boot mode and other config Rs are big
> > > > ones
> > > > > easy to change, and easy to debug (top side of
> > > > board).
> > > > > It happens often that you want to try different
> > > > configs
> > > > > when one more or another on TMX chip is not
> > > > working as
> > > > > expected
> > > > >
> > > > > -Jeff
> > > > >
> > > > >
> > > > > > --- In c...
> > > > , "jigs_dsp"
> > > > > wrote:
> > > > > >>
> > > > > >> Hi,
> > > > > >>
> > > > > >> TMS320C6455 is based on C64x+ (advanced C64x)
> > > > core. TMS320C6416 is
> > > > > >> based on C64x core. Price for both DSK is same
> > > > and TMS320C6455 DSK
> > > > > > is
> > > > > >> introduced recently. Also C6455 DSK has on
> > > > board 256MB DDR2. Does
> > > > > > it
> > > > > >> mean that I have to select TMS320C6455 DSK? If
> > > > I want to buy it for
> > > > > >> video and imaging applications (mainly for
> > > > codecs development),
> > > > > > then
> > > > > >> which one would be better? and Why? Can you
> > > > please explain in
> > > > > > brief?
> > > > > >>
> > > > > >> Awaiting reply from experts of this forum at
> > > > the earliest.
> > > > > >>
> > > > > >> Thanks and warm regards,
> > > > > >> Jigar.
> > > > >
> > > > > Start a New Thread

Hi Jigar,
Unfortunately NO, this is the problem.
As you can see on this webpage
http://focus.ti.com/docs/prod/folders/print/tms320c6455.html
in the section "Pricing/Packaging" you can see that only TMX device
are available.
I don't know when TMS devices will be available!

Regards
Gio
--- In c..., "jigs_dsp" wrote:
>
> Thanks all for valuable inputs.
>
> My further analysis is as follows:
> Datasheet and Product web page of TMS320C6455 DSP refers TMS version
> and silicon revision 2.0. Is TMS version of TMS320C6455 DSP
> available?
> http://focus.ti.com/docs/prod/folders/print/tms320c6455.html
>
> Thanks and Regards,
> Jigar.
> --- In c..., "presciutti_dgl2k"
> wrote:
> >
> > Every advise is very accepts.
> > Anyway, I'm very curious to know if TMX320C6455 works well.
> > That is, TI speak about some benefit:
> > - 20% higher cycle performance improves overall system performance
> > - 20-30% smaller code size reduces system cost
> > - Better Debug
> > is it true?
> > More, is serial RapidIO Bus reliable interconnection?
> > And what about DDR2 memory controller?
> >
> > Have someone some experience on this device?
> > This should be very important for my future prototype design.
> >
> > Thanks all
> > Gio
> >
> >
> >
> > --- In c..., "Bhooshan Iyer" wrote:
> > >
> > > Lakshman--
> > > I think the discussion was not on software development. If it
> were
> > so,
> > > your advice is valid.. The discussion I believe was on
> > > prototype/system design using C6455.
> > >
> > > --Bhooshan
> > >
> > > On 7/5/06, Lakshman wrote:
> > > > Hi,
> > > >
> > > > If you are developing advanced video applications go
> > > > for C6455(C64x+ core).You can reuse this code for
> > > > OMAP2430/OMAP3430 platforms since the IVA2 is based on
> > > > C64x+. C6416 DSK is obsolete now and it's not widely
> > > > used for video applications.
> > > >
> > > > Thanks and regards,
> > > > -Lakshman
> > > >
> > > > --- Bhooshan Iyer wrote:
> > > >
> > > > > Jeff/Gio/Jigar--
> > > > >
> > > > > Great thread.Thanks for all the valuable info.
> > > > >
> > > > > --Bhooshan
> > > > >
> > > > > On 7/5/06, Jeff Brower
> > > > > wrote:
> > > > > >
> > > > > > Gio-
> > > > > >
> > > > > >
> > > > > > > of sure C6455 is the best choice for video and
> > > > > imaging applications
> > > > > > > for many reasons: DSP Core match more powerful,
> > > > > 2MB of internal
> > > > > > > memory, DDR2 interface, RapidIO interconnection
> > > > > and so on (you can
> > > > > > > find more information on TI web site).
> > > > > > > Unfortunately C6455 DSPs are an experimental
> > > > > products (designated as
> > > > > > > TMX) that are in the formative or design phase
> > > > > of development. Then,
> > > > > > > you can found unexpected problems when you use
> > > > > it. For these reason I
> > > > > > > had chosen C6414 DSP (TMS prefix: Fully
> > > > > qualified production device)
> > > > > > > for my project.
> > > > > >
> > > > > > This is excellent advice. For engineers
> > > > > considering to design with 6455
> > > > > > at this time, here are some prototype suggestions
> > > > > you're not likely to
> > > > > > read on TI website:
> > > > > >
> > > > > > -bring out all unused pins to test-point; TI may
> > > > > make
> > > > > > a change and need to use the pins in some
> > > > > different
> > > > > > way
> > > > > >
> > > > > > -allow for easy change to oscillator rate, in case
> > > > > > TMX part is not operating correctly at specified
> > > > > > frequencies
> > > > > >
> > > > > > -make sure power supply / switching regulator is
> > > > > easily
> > > > > > adjustable. TMX devices often have issues with Vcc
> > > > > > level and ripple. For example, it may be necessary
> > > > > to
> > > > > > raise Vcc level somewhat over the spec. This has
> > > > > > happened to me several times before with early
> > > > > > versions of a DSP
> > > > > >
> > > > > > -be ultra careful with gnd planes near the device.
> > > > > TMX
> > > > > > devices often have issues with gnd noise and
> > > > > return
> > > > > > current. The famous example is early versions of
> > > > > TMX
> > > > > > C6713 BGA package which had 256 pins. Soon TI
> > > > > > introduced a new package -- same chip but with 272
> > > > > > pins. What were the extra 16 pins? All Gnd pins
> > > > > >
> > > > > > -make sure boot mode and other config Rs are big
> > > > > ones
> > > > > > easy to change, and easy to debug (top side of
> > > > > board).
> > > > > > It happens often that you want to try different
> > > > > configs
> > > > > > when one more or another on TMX chip is not
> > > > > working as
> > > > > > expected
> > > > > >
> > > > > > -Jeff
> > > > > >
> > > > > >
> > > > > > > --- In c...
> > > > > , "jigs_dsp"
> > > > > > wrote:
> > > > > > >>
> > > > > > >> Hi,
> > > > > > >>
> > > > > > >> TMS320C6455 is based on C64x+ (advanced C64x)
> > > > > core. TMS320C6416 is
> > > > > > >> based on C64x core. Price for both DSK is same
> > > > > and TMS320C6455 DSK
> > > > > > > is
> > > > > > >> introduced recently. Also C6455 DSK has on
> > > > > board 256MB DDR2. Does
> > > > > > > it
> > > > > > >> mean that I have to select TMS320C6455 DSK? If
> > > > > I want to buy it for
> > > > > > >> video and imaging applications (mainly for
> > > > > codecs development),
> > > > > > > then
> > > > > > >> which one would be better? and Why? Can you
> > > > > please explain in
> > > > > > > brief?
> > > > > > >>
> > > > > > >> Awaiting reply from experts of this forum at
> > > > > the earliest.
> > > > > > >>
> > > > > > >> Thanks and warm regards,
> > > > > > >> Jigar.
> > > > > >
> > > > > Start a New Thread

Thanks.

I have following three options with respect to C64x DSK purchase:
(1) Buy C6416 DSK which has TMS version of C6416 (c64x core).
(price $495).
(2) Buy C6455 DSK which has TMX version of C6455 (c64x+ core).
(price $495).
(3) Wait for release of TMS version of C6455. But don't know when it
will be available? and will C6455 DSK price increase if DSK
incorporates TMS version of C6455 in future?

Which option would be better?

Thanks and Regards,
Jigar.

--- In c..., "presciutti_dgl2k"
wrote:
>
> Hi Jigar,
> Unfortunately NO, this is the problem.
> As you can see on this webpage
> http://focus.ti.com/docs/prod/folders/print/tms320c6455.html
> in the section "Pricing/Packaging" you can see that only TMX device
> are available.
> I don't know when TMS devices will be available!
>
> Regards
> Gio
> --- In c..., "jigs_dsp" wrote:
> >
> > Thanks all for valuable inputs.
> >
> > My further analysis is as follows:
> > Datasheet and Product web page of TMS320C6455 DSP refers TMS
version
> > and silicon revision 2.0. Is TMS version of TMS320C6455 DSP
> > available?
> > http://focus.ti.com/docs/prod/folders/print/tms320c6455.html
> >
> > Thanks and Regards,
> > Jigar.
> >
> >
> > --- In c..., "presciutti_dgl2k"
> > wrote:
> > >
> > > Every advise is very accepts.
> > > Anyway, I'm very curious to know if TMX320C6455 works well.
> > > That is, TI speak about some benefit:
> > > - 20% higher cycle performance improves overall system
performance
> > > - 20-30% smaller code size reduces system cost
> > > - Better Debug
> > > is it true?
> > > More, is serial RapidIO Bus reliable interconnection?
> > > And what about DDR2 memory controller?
> > >
> > > Have someone some experience on this device?
> > > This should be very important for my future prototype design.
> > >
> > > Thanks all
> > > Gio
> > >
> > >
> > >
> > > --- In c..., "Bhooshan Iyer"
wrote:
> > > >
> > > > Lakshman--
> > > > I think the discussion was not on software development. If it
> > were
> > > so,
> > > > your advice is valid.. The discussion I believe was on
> > > > prototype/system design using C6455.
> > > >
> > > > --Bhooshan
> > > >
> > > > On 7/5/06, Lakshman wrote:
> > > > > Hi,
> > > > >
> > > > > If you are developing advanced video applications go
> > > > > for C6455(C64x+ core).You can reuse this code for
> > > > > OMAP2430/OMAP3430 platforms since the IVA2 is based on
> > > > > C64x+. C6416 DSK is obsolete now and it's not widely
> > > > > used for video applications.
> > > > >
> > > > > Thanks and regards,
> > > > > -Lakshman
> > > > >
> > > > > --- Bhooshan Iyer wrote:
> > > > >
> > > > > > Jeff/Gio/Jigar--
> > > > > >
> > > > > > Great thread.Thanks for all the valuable info.
> > > > > >
> > > > > > --Bhooshan
> > > > > >
> > > > > > On 7/5/06, Jeff Brower
> > > > > > wrote:
> > > > > > >
> > > > > > > Gio-
> > > > > > >
> > > > > > >
> > > > > > > > of sure C6455 is the best choice for video and
> > > > > > imaging applications
> > > > > > > > for many reasons: DSP Core match more powerful,
> > > > > > 2MB of internal
> > > > > > > > memory, DDR2 interface, RapidIO interconnection
> > > > > > and so on (you can
> > > > > > > > find more information on TI web site).
> > > > > > > > Unfortunately C6455 DSPs are an experimental
> > > > > > products (designated as
> > > > > > > > TMX) that are in the formative or design phase
> > > > > > of development. Then,
> > > > > > > > you can found unexpected problems when you use
> > > > > > it. For these reason I
> > > > > > > > had chosen C6414 DSP (TMS prefix: Fully
> > > > > > qualified production device)
> > > > > > > > for my project.
> > > > > > >
> > > > > > > This is excellent advice. For engineers
> > > > > > considering to design with 6455
> > > > > > > at this time, here are some prototype suggestions
> > > > > > you're not likely to
> > > > > > > read on TI website:
> > > > > > >
> > > > > > > -bring out all unused pins to test-point; TI may
> > > > > > make
> > > > > > > a change and need to use the pins in some
> > > > > > different
> > > > > > > way
> > > > > > >
> > > > > > > -allow for easy change to oscillator rate, in case
> > > > > > > TMX part is not operating correctly at specified
> > > > > > > frequencies
> > > > > > >
> > > > > > > -make sure power supply / switching regulator is
> > > > > > easily
> > > > > > > adjustable. TMX devices often have issues with Vcc
> > > > > > > level and ripple. For example, it may be necessary
> > > > > > to
> > > > > > > raise Vcc level somewhat over the spec. This has
> > > > > > > happened to me several times before with early
> > > > > > > versions of a DSP
> > > > > > >
> > > > > > > -be ultra careful with gnd planes near the device.
> > > > > > TMX
> > > > > > > devices often have issues with gnd noise and
> > > > > > return
> > > > > > > current. The famous example is early versions of
> > > > > > TMX
> > > > > > > C6713 BGA package which had 256 pins. Soon TI
> > > > > > > introduced a new package -- same chip but with 272
> > > > > > > pins. What were the extra 16 pins? All Gnd pins
> > > > > > >
> > > > > > > -make sure boot mode and other config Rs are big
> > > > > > ones
> > > > > > > easy to change, and easy to debug (top side of
> > > > > > board).
> > > > > > > It happens often that you want to try different
> > > > > > configs
> > > > > > > when one more or another on TMX chip is not
> > > > > > working as
> > > > > > > expected
> > > > > > >
> > > > > > > -Jeff
> > > > > > >
> > > > > > >
> > > > > > > > --- In c...
> > > > > > , "jigs_dsp"
> > > > > > > wrote:
> > > > > > > >>
> > > > > > > >> Hi,
> > > > > > > >>
> > > > > > > >> TMS320C6455 is based on C64x+ (advanced C64x)
> > > > > > core. TMS320C6416 is
> > > > > > > >> based on C64x core. Price for both DSK is same
> > > > > > and TMS320C6455 DSK
> > > > > > > > is
> > > > > > > >> introduced recently. Also C6455 DSK has on
> > > > > > board 256MB DDR2. Does
> > > > > > > > it
> > > > > > > >> mean that I have to select TMS320C6455 DSK? If
> > > > > > I want to buy it for
> > > > > > > >> video and imaging applications (mainly for
> > > > > > codecs development),
> > > > > > > > then
> > > > > > > >> which one would be better? and Why? Can you
> > > > > > please explain in
> > > > > > > > brief?
> > > > > > > >>
> > > > > > > >> Awaiting reply from experts of this forum at
> > > > > > the earliest.
> > > > > > > >>
> > > > > > > >> Thanks and warm regards,
> > > > > > > >> Jigar.
> > > > > > >
> > > > > > >
> Start a New Thread