Forum Discussion

Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
13 years ago

Advanced Synthesis Cookbook - VGA example question

Hello, I've been looking at the Advanced Synthesis Cookbook at: http://www.altera.com/literature/manual/stx_cookbook.pdf There's an output named "request" what is this and what pin is it co...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
13 years ago

It wouldn't be used for the interface out to the display, it looks like a debug/hint signal to me. It's been a really long time since I worked with VGA but I think that signal asserts after the last pixel on the screen is sent and remains asserted until the next frame starts (I could be wrong). The only signals you need to connect to the display interface are these (some displays don't need all of those):

output [9:0] vga_r, vga_g, vga_b;

output vga_hs, vga_vs, vga_blank, vga_clock;