Cirrus-logic AN269 Manual do Utilizador descarregar pdf (Página 38)

38 AN269REV1

AN269

that the timing is met by making the quantity larger than it needs to be. The time from the last SPCLK until

the VCSYNC signal becomes inactive (on the second line) is CPLoadVidClks.

HSYNC

SPCLK

HSYNCH

Single Horizontal Line

DATA

One SPCLK per Horizontal Pixel

VCSYNC

(Horizontal

Line 2 ONLY)

HSYNCSPCLK

SPCLKHSYNC

VCHHSYNC

VCLHSYNC

Count = HClkTotal

Count = 0

Horizontal Line

Counter Value

HSyncStart

HActiveStart

HActiveStop

Count = HClkTotal - 1

Count = HClkTotal

Count = 0

HSyncStop

LoadHighVidClks

FrameHoldVidClks

LoadCPVidClks

ActiveVidClks

CPLoadVidClks

Figure 20. Frame Type 2 Display with Colored Regions

1 2 ... 33 34 35 36 37 38 39 40 41 42 43 ... 64 65

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Cirrus-logic AN269 Manual do Utilizador Página 38