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I must be behind the times.  I thought it was going to be a Display Port connector from the PCB to the back of the TI...

 

410103591_DisplayPort.jpg.697de8324f0e050a1c1825a63d7e4a7e.jpg

 

... using a Display Port to HDMI converter cable to the monitor...

 

1945564291_DisplayPortToHDMI.jpg.f54a4200ebb2acd27ece4efcf6fbdd56.jpg

 

Hmmm... decisions...

 

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Looking at the two you specified, they look like they were designed to support specific devices (or device families). The pin-out difference may be a function of that use case--one you could probably verify by testing two different vendor cables designed to support a single device family.

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37 minutes ago, --- Ω --- said:

I must be behind the times.  I thought it was going to be a Display Port connector from the PCB to the back of the TI...

 

See post #312:

 

@Ksarul

They are for specific devices, but that is how it is going to be for all of the FPC video adapters.  However, they are all designed to convert one type of HDMI connector to another, so the FPC signals have to carry all of (or most of) the 19 signals, power, and ground that are part of the physical connector specification.  There is nothing device-specific about the converters per-se, the only problem is that the different manufacturers of these adapters are using a different arrangement of the 19 signals.

 

This is not a problem for the video, since ultimately the correct input signals have to go the correct output signals, which they do.  The problem is, the MK2 is essentially replacing one of the header-boards at one end of the cable, so I have to be aware of how the HDMI to FPC mapping was done for that specific cable.  It would be nice if they just went HDMI pin-1 to FPC pin-1, pin-2 to pin-2, etc. but they do not.

 

The truly alternate solution that I proposed in my post #312 above, it to make my own DVI header and people will just have to use an adapter.  However, in this case at least it would be a passive cable (DVI to HDMI) since the signaling is backwards compatible.  Also, a lot of these FPC adapters do not have any kind of mounting flanges on the connectors, or holes in the PCB, which will make it hard for people to mount in their systems.  However, DVI headers tend to always have mounting flanges like VGA headers.

 

@GDMike

No worries, I understand what you are saying. 🙂

 

 

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@--- Ω ---

To add more context, DP was a consideration for a short time.  However, once I looked into it I quickly realized it is very different from anything else, and *very* complicated.  It also has a minimum requirement of at least one 1.3GHz channel (or something close IIRC), and an FPGA with the hardware serializers required to do that are more money and do not come in a package I need for the physical constraints of the MK2 (a DIP-40 board is not very big: 17mm x 52mm, and only 15mm between the PCB pins).

 

I also found out that DP is a licensed technology, and the connectors are hard to source, especially the small ones.  HDMI is currently winning the battle of being the ubiquitous connector, probably because most of the manufacturers involved in inventing it are making TVs and other media devices.

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15 hours ago, matthew180 said:

So I bought a few FPC adapters for reference:

 

1. https://www.amazon.com/gp/product/B07D9FJNR9

2. https://www.amazon.com/gp/product/B078J16HP9

 

Hi Matthew, 

 

I would prefer the second link for the "Short Flat Slim Thin HDMI FFC FPV HDMI Cable Standard HDMI Female Plug to Standard HDMI Male 90 Degree Compatible with RED blackmagic BMCC Sony FS7 Canon C300 Black 10cm" I already bought one a few weeks ago :) 

 

seeya

 

Joe

 

Edited by a2dconverter

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