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Poor man's SDI - Page 20  

post #571 of 744
I never opened it , but I`ll take a look and see.
post #572 of 744
post #573 of 744
Ok, One chip says Conexant RC224ATL

On the same chip it says, R6781-11 Mexico.

another chip reads VLSI N62037E1.

Let me know what you find.
post #574 of 744
Wrong chip info! I found it. it`s a Phillips SAA7120H.
post #575 of 744
The pdf. says it excepts ccir656. I saw no reference to bt601 anywhere in the pdfb But someone one this forum a year or so ago sdi modded this puppy and said he had the input the code into the 656 stream. Iremember very clearly....bUt I wish I was wrong.
post #576 of 744
I bet it's a bt601 stream (they never make it easy on us)... look at the PDF and read about the "Synchronization" (7.4)... it uses the RCV1 & RCV2 for its timing. My Pioneer chip was the same... you can use it with a bt601 or bt656 stream.

This would be a good candidate for the Ultimate SDI mod. I've been slammed with work and haven't had a chance to dedicate a lot of time to finish testing it.

post #577 of 744
Yeah, It`s a bt 601.

It reads, the 8-bit multiplex cb-y-cr formats are "ccir 656" (D1format)
compatible, but the SAV and EVA codes can be decoded optionally when the device is used in slave mode.

It then show how it uses the RCV1 and RCV2 synchroniation timming in slave mode.

It then goes on to explain alot timings or the 7bit slave mode ccir 601.
odd and even color timings nd things of that nature.
post #578 of 744
Following on from Joaquin Pradas post of a SDI mod to a Uk SKY+ system, I took a few screen grabs of my modded system outputting SDI and Svideo. I've stored them on my web site as uncompressed BMPs so there shouldnt be any MPEG compression system interfering, the downsise is the download size is large for these images.

You can find the pics at www.aqpb21.dsl.pipex.com
post #579 of 744
I just completed my DirecTV TiVo SDI mod which required EAV/SAV insertion. I first tried using an old Sony CXB1001G chip which is a mux and TRS inserter chip. It turned out the glue logic to make this chip work with a premuxed stream was approaching the complexity of a basic TRS inserter. So I went the FPGA route and built it from the ground up.

I did run into a few things I would like to caution the "Ultimite SDI Mod Group" on. Perhaps they have accounted for this but in any case here are a few things I found with the TiVo.

1) The TiVo does not supply simple H&V sync to the NTSC encoder. It has composite sync and field ID. You must extract V sync inside the FPGA from the field ID edges. However the field ID being supplied by the TiVo means you can omit all the field ID generation issues.

2) The comp sync does not contain equalizing pulses in the vertical interval. So you lose your horizontal reference during that period. Not really a problem unless you try to extract V sync from the comp sync. Now you have to deal with the lack or inclusion of the equalizing pulses. If they are present, they would trip the Vsync counter prematurely. Absent means you can't count lines through the vertical interval - you now need to count pixels / 1716. I just used the field ID edges as it was more fool proof.

3) The Field ID is inverted or F1=0 and F2= 1. This is opposite from most designs although no rule says it must be either way.

4) I did use a scope and logic analyzer to debug this. The logic analyzer was a luxery but I can't see how anyone could resolve these problems without at least a dual trace scope.

All these things can be dealt with. I just wanted to point out it's a lot more than H/V phasing issues when looking at different 601 buss implementations.
post #580 of 744

Managed to one picture small enough, now I jist need to get the
pdf diagram picture smaller.

Thanks in advance.
post #581 of 744
I have not read all this topic but this is my homemade SDI output
for my DVB Humax 5400 Sat Receiver and my DVD Pioneer 757:


If you want download .pdf scheme, link here (you have to register):

post #582 of 744
Linomatz... looks good!
post #583 of 744

Linomatz I can not read the language in your link:confused:
But would love to see some pictures of how you attached
the sdi module to the Humax.

Thanks in advance
post #584 of 744
Originally posted by kempf
Linomatz I can not read the language in your link:confused:
But would love to see some pictures of how you attached
the sdi module to the Humax.
Thanks in advance

This is sheme, sorry but for other info you have to learn italian! :D
post #585 of 744

My reciever uses the Lsi L64105 a/v decoder.

I found the pinoutfor the chip here


Now the pms need´s the D2-D9 but on the lsi the pins are called PD-0,
PD01,PD02 untill PD7. And I can not find any pin called pixelclock but one called sysclck.

Any help would be very apreciated.

Thanks in advance!
post #586 of 744
Any news on the Ultimate SDI Mod? I've gotten a H3DII card, and look forwards to SDI input. When the SDI mod is available, is there a list of known DVD players that can be used with it? Thanks for your hard work everyone on this!!!

post #587 of 744
Roberto has made some progress... I'll let him comment on it... I've been swamped with another project and look forward to finishing this one up... maybe I'll have some time during the holidays to wrap it up.

We do have the SDI mod with FPGA that we successfully modded a few different models, but it's doesn't give you the same control like the ultimate will, since it requires changes to the verilog for timing tweaks.

post #588 of 744
I have connected the ultimate board but the picture is not good yet. As soon i connect the scope probe on the clk signal between the fpga and the clc021 the picture becomes much better. First i will improve the powersupply by creating a simple dedicated 5v powersupply and not tapping the power from the dvd-player. I will let you know the progress.
post #589 of 744
Does anyone know if the Denon DVM 4800 is SDI modable? Thanks.
post #590 of 744
Just received the player,I would like to mod it.
Any suggestion?
Pinout of MPEG or D/A chip or better picture of the mod?
post #591 of 744
Please refer to that link......


look in the last page, You can see the pin diagram of a chip used in DVB T (Digital Terrestrial Television).

PIN number 15 it´s called SDI..........Could this mean we don´t need nothing than a 75 Omh cable and we get the SDI signal?

I want a DVB T receiver SDI modifiable, or better, SDI ready.

Do you think it´s possible?

post #592 of 744
Today I made the SDI mod.
It was not trivial but it was worth the time spent.
The player has two Video DAC onboard:
2970 and 7300 by Analog Devices.
The parallel digital stream arrives to the 2970 (pins 1-7),the 27Mhz
clock is on pin 27.
There are holes on the tracks,that helps the connections.
Utilizing the PMSvideo SDI module I had a durty signal clock,
it was necessary to put an 100ohm resistor (series)and a 27pf cap
to ground on the clock signal and everything was OK.
Boys what a picture!
post #593 of 744

Very cool!!! Good work.

post #594 of 744
Pioneer 747 DVD player is added to the SDI mod. database.

Thanks for Berti's contribution.
post #595 of 744
Just finish the SDI mod on 733A (Hong Kong Version of 747A).

However, there are some problem in the SDI Output.

In Dscaler, the own and even field of the video "offset" by a few lines as shown in the attached photo.

Any Idea?
post #596 of 744
Sorry! Here is the photo!
post #597 of 744
It is very strange.

After I re-soldered all the data line to the connector to SDI board, It work perfectly now.
post #598 of 744
Pioneer 733A DVD player is added to the SDI mod. database.

Thanks for Mwpmo's contribution.

post #599 of 744
What kind of tape do you use for holding the wires securely against the circuit board?

Greg Stitt
post #600 of 744
Just some kind of removable paper tape.

It is removable, so it will not damage the circuit board with surface mount component when you want to remove it later.
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