low cost CRT controller for ARM9

Started by October 13, 2005
Hi,

We are looking around for cheap CRT controller which to add to our new
ARM9 development board.
So far Seiko-Epson S1D13506 and Asiliant 65550 took our attention.
Any experience with the above two?
Is there better options which we missed?

Thanks
Tsvetan
---
PCB prototypes for $26 at http://run.to/pcb (http://www.olimex.com/pcb)
PCB any volume assembly (http://www.olimex.com/pcb/protoa.html)
Development boards for ARM, AVR, PIC, MAXQ2000 and MSP430
(http://www.olimex.com/dev)

> ARM9 development board. > So far Seiko-Epson S1D13506 and Asiliant 65550 took our attention. > Any experience with the above two?
Does your part have PCI on it? If not, Epson is the easier choice.
Hi,

no, this board have no PCI, actually both CRT controllers above are
over featured for what we intend to build and the graphics will be
extremly slow I guess, something like 640x480 4 bit color will be
enough for our application as our bus is 66Mhz x 32 bit - Cirrus
EP9301, but all chips with these specs I see are either obsolete either
discontinued products :)

Tsvetan

> no, this board have no PCI, actually both CRT controllers above are > over featured for what we intend to build and the graphics will be
If you don't have a PCI bridge already, then forget about the C&T part. Anyway, it's a VERY old part based on ancient technology, it's all 5V and hot and nasty. The Epson parts have the complementary pleasure of being expensive and poorly documented. For low resolution stuff I'd look seriously at the possibility of using an ARM7 SoC as a slave for display control, e.g. Sharp LH79520 (or, if you like Cirrus Logic, maybe EP7312, but the resolution is very limited). Run the part in TFT mode and use a DAC or even just R-2R ladder to turn the LCD color data into an analog voltage.
larwe wrote:
> > no, this board have no PCI, actually both CRT controllers above are > > over featured for what we intend to build and the graphics will be > > If you don't have a PCI bridge already, then forget about the C&T part. > Anyway, it's a VERY old part based on ancient technology, it's all 5V > and hot and nasty. The Epson parts have the complementary pleasure of > being expensive and poorly documented. > > For low resolution stuff I'd look seriously at the possibility of using > an ARM7 SoC as a slave for display control, e.g. Sharp LH79520 (or, if > you like Cirrus Logic, maybe EP7312, but the resolution is very > limited). Run the part in TFT mode and use a DAC or even just R-2R > ladder to turn the LCD color data into an analog voltage.
For such low resolutions (640x480x4), you can probably do it in an FPGA driving some Rs. Alternatively, some high end ARMs have build-in CRT or LCD controllers. It might be cheaper than having two separate chips.
> For such low resolutions (640x480x4), you can probably do it in an FPGA > driving some Rs. Alternatively, some high end ARMs have build-in CRT > or LCD controllers. It might be cheaper than having two separate chips. >
Just open the cheapest PDA and you will see what you need - Samsung S3C2410.
tusunov@my-deja.com wrote:

> Hi, > > We are looking around for cheap CRT controller which to add to our new > ARM9 development board. > So far Seiko-Epson S1D13506 and Asiliant 65550 took our attention. > Any experience with the above two? > Is there better options which we missed? > > Thanks > Tsvetan
Hi Tsvetan, there may be some ideas that interest you at: http://www.dontronics.com/micro-vga.html http://www.dontronics.com/micro-lcd.html Don... -- Don McKenzie E-Mail Contact Page: http://www.e-dotcom.com/ecp.php?un=Dontronics Micro,TTL,USB to 1.5" color LCD http://www.dontronics.com/micro-lcd.html USB,RS232 or TTL to VGA Monitor http://www.dontronics.com/micro-vga.html World's smallest USB 2 TTL Conv http://www.dontronics.com/micro-usb.html