TMDXLCDK6748 not available and not found on TI.com

Hi Peter,
TI does not expect to have LCDK inventory in the PDC for at least a few months. Our contract manufacturer has communicated to TI that there a few non-TI components that are now end of life which is causing a layout change (board redesign) and there are some long lead-time components. We expect to have new boards available by August 2015. We will ship boards sooner if at all possible.

Apologize for the inconvenience.

Thanks for your reply, Titus.

Is the OMAP-L137/TMS320C6747 Floating Point Starter Kit, TMDSOSKL137 a reasonable stand in for development work on the C674x DSPs?

The website seems to suggest that this is the case. We are not looking for any of the OMAP functionality and are interested in just the TMS320C674x DSPs.

What are your thoughts.

Thanks and regards
Peter

Thanks Titus.

Will go ahead with the TMDSOSKL137 kit.

cheers!
Peter

I've used the TMDSOSKL137 and TMDXLCDK6748. Some of my observations over the years. Things might have changed.

---------
TMDSOSKL137
- CCSv3.3 locked to the XDS on the TMDSOSKL137. Upgrade is to newest CCS is not free.
- DSP/BIOS aka BIOS5 - Operating System
- PSP/BIOS 1 - Device Drivers for BIOS5
- StarterWare - No version exists for the C6747. Some effort is required to port the C6748 version.
- Update to BIOS6 might be possible

Optional HW:
XDS100 JTAG - required to upgrade to newest CCS free license. Otherwise not needed.

--------
TMDXLCDK6748
- CCSv6? has free license with the XDS100 JTAG (not included).
- SYS/BIOS aka BIOS6
- PSP/BIOS 3 - Device Drivers for BIOS6
- StarterWare - Bare metal examples and drivers.

Extra HW required :
XDS100 JTAG
---------
OMAP-L137/C6747/AM1705 family
- Has limited pinmux possibilities. There are many peripherals but you may find you can only use one.
- Minimal power saving modes.
- Simpler clock architecture.
- Less EMIF options.
- Earlier AISGEN, possible less options.

OMAP-L138/C6748/AM1808 family
- Better pinmux possibilities. More likely you can use two peripherals at the same time.
- Deep sleep power saving mode.
- More complicated clock architecture.
- More EMIF options.
- Later AISGEN, possible more options.

If you can use the OMAP-L137 for prototyping, be aware that the moving to C6748 will require some porting effort. The HW archtecture is sufficiently different that a small amount of code will have to be changed.

Hi Norman,

Thanks for your insights.

Really trying to get my head around the difference between the 2 families, 674x where 'x' is 3,5 and 7 being 1 family and the 674x where 'x' is 2,6 and 8.

The first diff I can see is the Muliti Channel Audio Serial Port on the odd numbered parts vs the more general Multichannel Buffered Serial Port (McBSP) and McASP on the even numbered parts.

Video port interface is an option on the even numbered parts. More memory interface options on the even numbered parts.

Being new to DSPs (have worked fairly extensively with microcontrollers) the differences are bewildering.

Does anyone know if there is a roadmap that explains the different targetting of the parts?

Norman, did you find any significant differences in math functionality supported by the 2 different types of devices. Our application is pretty heavy audio processing with lots of FFT operations.

Thanks and regards,
Peter

As far as I know, the core processor is the same between the two families. I believe the DSPLIB math library is the same for both families. Can say for sure, I did not use it.

The OMAP-L137/6747 came first then the OMAP-L138/C6748 came second. Derivatives seem to mostly remove peripherals, reduced L3 ram and reduced pin count packages. I get the feeling that the C6747 is for simpler systems for one peripheral and the C6748 is for more complex systems with many peripherals.

Personally, I've found TI's firmware support for the C6748 better than the C6747. Both families do not have a good USB firmware solution outside of Linux (ie. ARM). The StarterWare bare metal USB support is minimal and buggy. I can't say about the audio drivers.

Hi Sam,

If you are super keen, I was able to track down some units of TMDXLCDK6748 from RS here in Australia.  Paid more than I should for a unit but it is cheaper than taking the wrong path.

au.rs-online.com/.../7983716;relevancy-data=636F3D3126696E3D4931384E525353746F636B4E756D6265724D504E266C753D656E266D6D3D6D61746368616C6C26706D3D5E5C647B337D5B5C732D2F255C2E2C5D5C647B332C347D2426706F3D313426736E3D592673743D52535F53544F434B5F4E554D4245522677633D4E4F4E45267573743D3739382D3337313626

cheers

Peter

Let me correct myself... August is the right month when we are expecting to have boards.

TMDSLCDK138 is available now