STW8009B27R/LF View Datasheet(PDF) - STMicroelectronics

Part Name

Description

View to exact match

STW8009B27R/LF

Mobile video DENC

STMicroelectronics 

STw8009/STw8019

Figure 12. Luma filtering with 4.43 MHz trap

Functional description

Frequency (MHz)

4.8

Chrominance encoding

Chroma components are computed from demultiplexed Cb, Cr samples. Before modulating

the subcarrier, the chroma components are band-limited and interpolated at pixel clock rate.

A set of 4 different filters is available for chroma filtering to suit a wide variety of applications

in the different standards and filters recommended by ITU-R 624-4 and SMPTE170-M. The

available –3dB bandwidths are 1.1, 1.3, 1.6 and 1.9 MHz.

Narrow bandwidths are useful against cross-luminance artifacts while wide bandwidths

allow to keep higher chroma contents.

Figure 13. 1.1 MHz chroma filter

Frequency (MHz)

17/65

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