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 Post subject: AT91SAM9263 SUPPORT 15INCH TFT ???????????????????????????
PostPosted: Tue Jan 13, 2009 10:22 am 
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Joined: Wed Apr 18, 2007 6:35 am
Posts: 32
Location: coimbatore
HAI GUYS ,

GIVE ME CLEAR IDEA , AT91SAM9263 DRIVE 15 INCH TFT SCREEN

???????????????????????????????????????????????????\\

REGARDS
E.SHANKAR
9362025000


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 Post subject: Re: AT91SAM9263 SUPPORT 15INCH TFT ???????????????????????????
PostPosted: Thu Feb 05, 2009 9:21 pm 
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Joined: Tue Jan 08, 2008 11:15 pm
Posts: 61
Location: Russia
impossible! only if your screen has resolution 640x480 :)


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 Post subject: Re: AT91SAM9263 SUPPORT 15INCH TFT ???????????????????????????
PostPosted: Sat Feb 14, 2009 8:29 am 
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Joined: Sat Feb 14, 2009 2:52 am
Posts: 12
Hello,

you have to know the resolution and pixel clock, first ..
It's not relate to Panel Size..
There are many different LCD Panels, and different resolution,
even same size, and it's possible diffferent resolution ..

after know the resolution, you have to know the interface ,it's TTL or LVDS interface.
TTL is no problem , if it's LVDS then you have to put LVDS transmitter in you hw.
better connect with 9263EK is TTL and 18bit TTL interface.

then you have to Know the Panel pixel clock, for example 640x480@60Hz need ~25Mhz.
and 800x600@60Hz need ~45MHz , you can find it in Panel Spec.

the you have to calcuate MCK in 9263 , to divide suitable pixel clock to panel ..
then set correct front porch , and back porch...
then you can get correct timing ...

BR,Jones


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 Post subject: Re: AT91SAM9263 SUPPORT 15INCH TFT ???????????????????????????
PostPosted: Tue Mar 10, 2009 12:16 pm 
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Joined: Wed Apr 18, 2007 6:35 am
Posts: 32
Location: coimbatore
THANKS FOR YOUR INFORMATION


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 Post subject: Re: AT91SAM9263 SUPPORT 15INCH TFT ???????????????????????????
PostPosted: Tue Oct 12, 2010 10:27 am 
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Joined: Tue Feb 06, 2007 5:18 pm
Posts: 30
jones.hsu wrote:
....
after know the resolution, you have to know the interface ,it's TTL or LVDS interface.
TTL is no problem , if it's LVDS then you have to put LVDS transmitter in you hw.
better connect with 9263EK is TTL and 18bit TTL interface.
BR,Jones


Have you got any pointer for a LVDS transmitter?


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 Post subject: Re: AT91SAM9263 SUPPORT 15INCH TFT ???????????????????????????
PostPosted: Wed Jan 05, 2011 7:06 pm 
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Joined: Tue Apr 08, 2008 4:58 pm
Posts: 4
DS90C365A
+3.3V Programmable LVDS Transmitter 18-Bit Flat Panel
Display Link-87.5 MHz

it works fine with a 800x600 TFT
but be aware of the pixelclock
if pixelclock is 50 MHz and memory bus speed 100MHz, CPU will not have much time for the OS.


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 Post subject: Re: AT91SAM9263 SUPPORT 15INCH TFT ???????????????????????????
PostPosted: Sun Jan 09, 2011 8:53 am 
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Joined: Wed Feb 18, 2004 5:53 pm
Posts: 132
Location: Sweden
[quote="Karlous"]DS90C365A
+3.3V Programmable LVDS Transmitter 18-Bit Flat Panel
Display Link-87.5 MHz

it works fine with a 800x600 TFT
but be aware of the pixelclock
if pixelclock is 50 MHz and memory bus speed 100MHz, CPU will not have much time for the OS.[/quote]

Since the AT91SAM)263 has TWO buses, the CPU will have plenty of time if
the display is on the secondary bus.
Unfortunately, the SDRAM controller on the secondary bus
is multiplexed with the Ethernet, so you are either losing
the Ethernet, or you have to go to PSRAM which is only 40 MHz.
The SAM9G45 does not have this problem and is therefore a much
better solution for large resolution screens.
I believe people have been running 1024 x 768 with the SAM9G45

_________________
Best Regards
Ulf Samuelsson


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