Honored ContributorHello all:
I am currently getting started to drive a DVI output on the Stratix II Audio Video Development Board and I am very new to it all. I have no prior experience with DVI signals, much less writing a controller for them. I am looking for some educational material to get me started. Any ideas? Thank you so much.
Honored ContributorI've done quite a bit with that board.
Well as far as driving the DVI chip, the datasheet is your best bet: http://www.siliconimage.com/docs/sii-ds-0081.pdf Basically all you're doing is driving RGB color values to the chip along with vertical and horizontal blanking signals. It's pretty straightforward. The kit includes a test example "s2gx_sdi_dvi_1pixel_per_clk.qar" in the "Examples\ManufacturingTestDesigns" folder of the kit install directory. JakeHonored ContributorThank you sir! I have done some work with VGA in the past and have driven those sync signals. I'm hoping the learning curve from here to there isn't too steep!
Honored ContributorAfter attempting to run the DVI loopback test many times, without successful result, I am wondering what I must be doing wrong.
I followed the configuration steps given in the .v file in the project, downloading via USB blaster to the FPGA, with a working DVI-D cable in a loop, and I get no output on the LEDs. Am I missing an obvious configuration step? I am under the impression that when configuring via JTAG there is no need to alter the configuration DIP switches. I have all power levels enabled. I am at a loss. Any help is appreciated.Honored ContributorThis may sound silly but it's worth asking. When the SIIGX A/V kit was first produced they couldn't get any of the Silicon Image DVI IC's (RX or TX). I have two boards; one of them does not have the ICs and the other does. Look at the board near the DVI connectors. Are the IC's even populated?
JakeHonored ContributorThe ICs are there. I got the loopback test running early this morning. I had not loaded the one-wire interface onto the Max device before working with the FPGA. Embarrassing, I know. Ha.
Thanks for your help.Honored ContributorIs there any literature on driving a DVI signal outside of the loopback test and the 1162 Data sheet?
