AK8857VQ Datasheet, PDF (66/105 Pages) Asahi Kasei Microsystems – Dual Channel Digital Video Decoder

[AK8857VQ]
Luminance bandwidth adjustment
Luminance bandwidth adjustment can be performed for MPEG compression etc. The band-limiting
filters for pre-compression limiting can be selected by the following register settings. Without these
filters, the frequency response of the luminance signal is determined by the decimation filter.
○LUMFIL[1:0]-bit : Settings for luminance bandwidth filter
LUMFIL [1:0]-bit
Filter characteristic
No filter.
[00]
No bandwidth limit.
[01]
Narrow
[10]
Mid
[11]
Wide
Notes
-3dB at 6.29MHz
-3dB at 2.94MHz
-3dB at 3.30MHz
-3dB at 4.00MHz
Luminance signal decimation filterç ç ç ç ç ç ç ç Luminance bandwidth filter
Sepia output
Sepia-colored output of the decoded signal can be obtained by the following register setting.
○SEPIA-bit : Settings for sepia output of decoded signal
(Sub-address 0x14_[6])
SEPIA –bit
Output
[0]
Normal
[1]
Sepia output
Notes
MS1189-E-01
-66-
2010/12