Datasheet

TVP5154A

SLES214C–DECEMBER 2007–REVISED SEPTEMBER 2010

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7.2.13 Contrast Control Register

Address 0Ch

Default 80h

7 6 5 4 3 2 1 0

Contrast [7:0]

Contrast [7:0]: This register works for CVBS and S-Video luminance.

1111 1111 to 1101 Reserved

0000 =

1100 1111 = 207 (maximum contrast)

1000 0000 = 128 (default)

0000 0000 = 0 (minimum contrast)

The total luminance gain relative to the nominal luminance gain as a function of the Contrast [7:0] setting is as follows.

Luminance Gain = nominal_luminance_gain × (Contrast[7:0] / 128)

Note: Luminance peak processing (see bit 1 of subaddress: 02h) may limit the upper end of the contrast control range.

Note: Whenever the contrast control setting is modified, the brightness control setting must be modified immediately afterward to maintain

the proper output black level.

7.2.14 Outputs and Data Rates Select Register

Address 0Dh

Default 47h

7 6 5 4 3 2 1 0

Reserved YCbCr output code range CbCr code format YCbCr data path bypass YCbCr output format

YCbCr output code range:

0 = ITU-R BT.601 coding range (Y ranges from 16 to 235. U and V range from 16 to 240)

1 = Extended coding range (Y, U, and V range from 1 to 254) (default)

CbCr code format:

0 = Offset binary code (2s complement + 128) (default)

1 = Straight binary code (2s complement)

YCbCr data path bypass:

00 = Normal operation (default)

01 = Decimation filter output connects directly to the YCbCr output pins. This data is similar to the digitized composite data, but

the HBLANK area is replaced with ITU-R BT.656 digital blanking.

10 = Digitized composite (or digitized S-video luma). A/D output connects directly to the YCbCr output pins.

11 = Reserved

YCbCr output format:

000 = 8-bit 4:2:2 YCbCr with discrete sync output

001 = Reserved

010 = Reserved

011 = Reserved

100 = Reserved

101 = Reserved

110 = Reserved

111 = 8-bit ITU-R BT.656 interface with embedded sync output (default)

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