Cirrus Logic EP93xx - Manual (Page 211)

DS785UM1 7-29
Copyright 2007 Cirrus Logic
Raster Engine With Analog/LCD Integrated Timing and Interface
EP93xx User’s Guide
7
7
7
Figure 7-9. Progressive/Dual Scan Video Signals
Vertical Back Porch
Vertical Front
Porch
Vertical Active
Video
Horizontal Back
Porch
Horizontal Front
Porch
Horizontal Active
Video
LINECARRY (CLKS)
VLINESTOTAL
VACTIVESTRT
VACTIVESTOP
VSYNCn
VACTIVE
HSYNCn
HACTIVE
0h 0h 1h VLINESTOTAL VLINESTOTAL VLINESTOTAL -1
Vertical
down
counter
0h 0h 1h
HCLKSTOTAL HCLKSTOTAL
HCLKSTOTAL -1
Horizontal
down
counter
VSYNCSTART
VSYNCSTOP
SPCLK
DURING
Vertical
VCLKSTOP
VCLKSTART
Vertical Sync
Interval
HACTIVESTRT
HACTIVESTOP
HSYNCSTART
HSYNCSTOP
HCLKSTOP
HCLKSTART
SPCLK
DURING
Horizontal
VBLANKn
VBLANKSTRT
VBLANKSTOP
HBLANKn
HBLANKSTRT
HBLANKSTOP