标签:blog http ar 2014 line log ad on
/*
--VGA Timing
--Horizontal :
-- ______________ _____________
-- | | |
--_______________| VIDEO |_______________| VIDEO (next line)
--___________ _____________________ ______________________
-- |_| |_|
-- B <-C-><----D----><-E->
-- <------------A--------->
--The Unit used below are pixels;
-- B->Sync_cycle :H_sync_cycle
-- C->Back_porch :hori_back
-- D->Visable Area
-- E->Front porch :hori_front
-- A->horizontal line total length :hori_line
--Vertical :
-- ______________ _____________
-- | | |
--______________| VIDEO |_______________| VIDEO (next frame)
--
--__________ _____________________ ______________________
-- |_| |_|
-- P <-Q-><----R----><-S->
-- <-----------O---------->
--The Unit used below are horizontal lines;
-- P->Sync_cycle :V_sync_cycle
-- Q->Back_porch :vert_back
-- R->Visable Area
-- S->Front porch :vert_front
-- O->vertical line total length :vert_line
*////////////////////////////////////////////
////////////////////////
//parameter
parameter hori_line = 1800; //Hor Total Time
parameter hori_back = 312; //Hor Blank Time 312+0
parameter hori_front = 96; // 96+0
parameter vert_line = 1000; //Ver Total Time
parameter vert_back = 36; // 36+0
parameter vert_front = 1; // 1+0
parameter H_sync_cycle = 112;//Hor Sync Time
parameter V_sync_cycle = 3; //Ver Sync Time
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标签:blog http ar 2014 line log ad on
原文地址:http://www.cnblogs.com/TFH-FPGA/p/3911805.html