DMD Flex Cable tech info

Second paragraph in my post above should be:
From reference designs
(e.g. www.ti.com/.../dlpa028.pdf )
one can see that there is no straightforward pin-to-pin connection in this cable.

Andrzej

Hello Andrzej,

First, welcome to the DLP Advanced Light Control section of the TI-E2E community.

You are correct that if you employ the flex extension that the system will no longer obey the TI rules for maximum path length and path length differences.  This is clearly stated in the disclaimer of the Application Report that you reference [http://www.ti.com/lit/an/dlpa028/dlpa028.pdf].

Are you wanting to build your own cable?  I am unclear what you are asking for.  If you are asking for path lengths inside the cable and other cable specifications, you will need to contact Amphenol.  The cables are designed to be low inductance and well shielded.

Let us know what your goal is so that we can get your project going.

Fizix

Hi Fizix,

Thank you for warm welcome.

I had some problems with sending my first post so it can be a bit inconsistent.
I referenced to dlpa028 just because it contains PCB drawings for both ends of the cable in one dlpa028.zip package.

In fact my main goal is to create custom application of DLP7000 chipset. Reference design uses the same flex cable, but there is no documentation of this element included.
From reference designs I can see that connections inside flex cable are made in quite a strange way.
From this data I can reconstruct information which pins are connected, but I am afraid that connections can be not of the same length. Since rules for routing signals in Discovery 4100 DMD say that differential signals should be matched to at least +/- 5 mil to each other it is essential to know differences in length between connections inside flex cable.

UPDATE/ANSWER:
I just get answer from Amphenol with detailed data about pinout. From this I can say that it is a good idea to follow pinout from referenced dlpa028 or ask for datasheet - there are dedicated pins for each and every signal for DMD application in this cable - data, clk, mbrst, power and gnd.
I can not see any information about differences in electric length of the connections in the datasheet I received from Amphenol.

With regards,
Andrzej