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 Posted: Apr 15, 2012 - 02:30 PM |
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Joined: Dec 22, 2005
Posts: 1261
Location: shiraz , iran
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Dear all
I want to know if you happen to know chips that can take a TFT as output and make them a normal PC monitor. Given me a VGA or DVI connection. |
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Posted: Apr 15, 2012 - 03:17 PM |
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Joined: Apr 20, 2007
Posts: 6061
Location: Long Island New York
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That makes no sense. Are you asking for an IC that controls a TFT display and use it's output to convert to VGA?
One simpler idea would be to go to the TFT controllers input and work from there.
You need to be more specific |
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Jim
I have decided that I am no longer going to plan anything in advance. In a court of law this is called Pre-Meditated, and does not look good for the defense.....
Timer function not working properly? Check CLKDIV8 Fuse first 
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Posted: Apr 15, 2012 - 07:40 PM |
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Joined: Apr 25, 2004
Posts: 3808
Location: Denmark
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Does TFT means LVDS ?
/Bingo |
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Posted: Apr 15, 2012 - 07:40 PM |
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Joined: Jul 18, 2005
Posts: 62203
Location: (using avr-gcc in) Finchingfield, Essex, England
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What kind of TFT signalling anyway? LVDS or something else?
But usually the display controller will have an internal split so it has two scanning outputs for one DRAM frame buffer. One with xVGA timing and one doing TFT driving over LVDS. If you think about most laptops that have both an internal LCD and an external 15 pin VGA connector their display controllers are doing this.
It would be very unusual (impossible?) to take the TFT scan signals and try to reconstitute them into xVGA. |
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Posted: Apr 16, 2012 - 03:10 AM |
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Joined: Jul 21, 2005
Posts: 1373
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| I know what he means, use frito lay and not ruffles. |
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Posted: Apr 16, 2012 - 08:51 AM |
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Joined: Dec 22, 2005
Posts: 1261
Location: shiraz , iran
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| I mean some ASIC. I have a board with a MST717C-LF chip, the chip takes VGA signal and convert it to a 800x480 RGB TFT, the chip is programmable and it has a 25X SPI eeprom. But I could not find the chip on digikey. I want a solution that can be found easily. |
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Posted: Apr 16, 2012 - 08:52 AM |
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Joined: Dec 22, 2005
Posts: 1261
Location: shiraz , iran
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Quote:
What kind of TFT signalling anyway? LVDS or something else?
I have some RGB TFT,it's desirable to be RGB, but if there is no other option I can use LVDS convertors. |
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Posted: Apr 16, 2012 - 09:39 AM |
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Joined: Jul 18, 2005
Posts: 62203
Location: (using avr-gcc in) Finchingfield, Essex, England
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| LVDS is RGB - it's a way of signalling that allows for high frequency signalling as RGB can be up at 110MHz or more. It uses differential signalling (like USB, MIDI and RS485). |
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Posted: Apr 16, 2012 - 10:34 AM |
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Joined: Nov 02, 2009
Posts: 3239
Location: Zelenograd, Russia
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MIDI?  |
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Warning: Grumpy Old Chuff. Reading this post may severely damage your mental health.
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Posted: Apr 16, 2012 - 10:36 AM |
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Joined: Jul 18, 2005
Posts: 62203
Location: (using avr-gcc in) Finchingfield, Essex, England
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Quote:
MIDI?
http://en.wikipedia.org/wiki/Differenti ... g#Examples
Wikipedia wrote:
Examples of differential signaling include LVDS, differential ECL, PECL, LVPECL, current loop interfaces such as Musical Instrument Digital Interface (MIDI) hardware, RS-422, RS-485, most Ethernet physical layers, USB, Serial ATA (SATA), TMDS, FireWire, and HDMI.
Of course Wikipedia is not always right. |
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Posted: Apr 16, 2012 - 11:24 AM |
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Joined: Dec 22, 2005
Posts: 1261
Location: shiraz , iran
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| Do you know any particular chip? |
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I love Digital
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Posted: Apr 16, 2012 - 11:38 AM |
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Joined: Nov 02, 2009
Posts: 3239
Location: Zelenograd, Russia
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clawson wrote:
Wikipedia wrote:
Wikipedia lied
clawson wrote:
Of course Wikipedia is not always right.
Because many of its authors are just writers but not readers |
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Posted: Apr 17, 2012 - 03:42 AM |
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Joined: Dec 30, 2004
Posts: 8721
Location: Melbourne,Australia
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| The chips I've seen are from obscure Chinese manufacturers. There's plenty of boards using such chips on Ebay. |
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