Datasheet

SLES084C − August 2007 TVP5146

2.11.8 Luminance Processing Control 2 Register

Subaddress 07h

Default 00h

7 6 5 4 3 2 1 0

Luma filter select [1:0] Reserved Peaking gain (sharpness) [1:0] Reserved

Luma filter selected [1:0]:

00 = Luminance adaptive comb enabled (default on CVBS)

01 = Luminance adaptive comb disabled (trap filter selected)

10 = Luma comb/trap filter bypassed (default on S-video, component mode, and SECAM)

11 = Reserved

Peaking gain (sharpness) [1:0]:

00 = 0 (default)

01 = 0.5

10 = 1

11 = 2

2.11.9 Luminance Processing Control 3 Register

Subaddress 08h

Default 02h

7 6 5 4 3 2 1 0

Reserved Trap filter select [1:0]

Trap filter select [1:0] selects one of the four trap filters to produce the luminance signal by

removing the chrominance signal from the composite video signal. The stopband of the chroma

trap filter is centered at the chroma subcarrier frequency with the stopband bandwidth controlled

by the two control bits.

Trap filter stopband bandwidth (MHz):

Filter select [1:0] NTSC ITU-R BT.601 NTSC Square pixel PAL ITU-R BT.601 PAL Square

pixel

00 = 1.2129 1.1026 1.2129 1.3252

01 = 0.8701 0.7910 0.8701 0.9507

10 = (default) 0.7183 0.6712 0.7383 0.8066

11 = 0.5010 0.4554 0.5010 0.5474

2.11.10 Luminance Brightness Register

Subaddress 09h

Default 80h

7 6 5 4 3 2 1 0

Brightness [7:0]

Brightness [7:0]: This register works for CVBS and S-video luminance.

1111 1111 = 255 (bright)

1000 0000 = 128 (default)

0000 0000 = 0 (dark)