Part Number: TFP410
Tool/software:
Hello, folks. I'm currently trying to get any output or signs of life from a TFP410, hooked up to an HDMI connector. Here's how it appears on my schematic:
All of those HDMI_ pins are hooked up to 3.3V IOs on an Artix 7 FPGA. So far I haven't been able to get anything to work. I'm currently trying:
assign HDMI_ISEL = 1'b0; // Use pin configuration mode, not I2C
assign HDMI_BSEL = 1'b1; // 24-bit single-edge mode
assign HDMI_DSEL = 1'b0; // Single-ended mode
assign HDMI_PD = 1'b1; // Normal operation (not powered down)
assign HDMI_DKEN = 1'b0; // De-skew disabled
assign HDMI_EDGE = 1'b0; // Latch on falling edge
And then I generate a signal on DE, HSYNC, VSYNC, and DATA[23:0] that should be 640x480 60Hz, by producing a 800x525 image, and appropriate blanking intervals (I have tried HSYNC/VSYNC active low and high), using a 25.17MHz pixel clock, and I can't get anything to work at all.
The monitor that's plugged in shows absolutely nothing, and just says "no signal". I've tried two different monitors from different manufacturers. I got so desperate that I even hooked up all of the above configuration lines to a counter that adjusts once per second, to brute-force all of the configuration settings, and I still see nothing.
What am I missing?
Thanks,
-Peter
