STV2310 datasheet(62/112 Pages) STMICROELECTRONICS

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STV2310

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DDECCONT6

CRCBOVER_EN

RGB enables the CRCB overload algorithm

This bit enables the RGB CrCb overload mechanism. This mechanism is used to prevent clipping on YCrCb

(when the input RGB signals are too large). The CrCb overload mechanism performs chroma measurement

during the video line to compute the correcting scale factor.

0: CRCB overload algorithm not active

1: CRCB overload algorithm active

FBLANKMODE

[2:0]

Fast Blanking Mode Selection

The Fast Blanking mode is only operational when the STV2310 is not in Analog YCrCb mode. It also

depends on the programmed mode and the FB input value. See register

DDECCONT6.

00x: Normal mixing mode between CVBS and RGB (Default)

(FB active during active line; soft mixing between 0 and 1)

01x: Saturated mode (mixing mode between CVBS and RGB)

(FB active and soft mixing from 0 to MIXSLOPE[7:0])

100: Static Mixer or Alpha Blending Mode 1

(FB inactive) YOUT = alpha x YRGB + (1-alpha) x YCVBS

101: Static Mixer or Alpha Blending Mode 2

(FB inactive) YOUT = alpha x YCVBS + (1- alpha) x YRGB with alpha = MIXSLOPE[7:0]

(Same relationship for Cr and Cb)

110: Forced CVBS (FB inactive) YOUT = YCVBS (idem for Cb, Cr)

111: Forced RGB (FB inactive) YOUT = YRGB (idem for Cb,Cr)

YCRCB_MODE

YCrCb Mode Selection

When the STV2310 is in Analog YCrCb mode, Fast Blanking Mode is disabled.

0: YCrCb signals all either from CVBS or RGB. (Default)

1: YCrCb mode: Y from CVBS signal, Cr and Cb from RGB signal with priority over FB mode.

PHSHFT_DIS

Phase Shift Option Disabled in Output PLL

This bit disables the phase jumps mechanism in the output PLL. Phase jumps are allowed when a phase

shift in the video input is transmitted in the data flow to the output PLL.

0: Phase shifts are enabled. (Default)

1: Phase shifts are disabled.

Address (hex): 06h

Reset Value (bin): 0000 0001

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

MIX_SLOPE[7:0]

Bit Name

Function

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