TW2837 datasheet(86/232 Pages) RENESAS

Part #	TW2837

Description	4-Channel Video and Audio Controller for Security Applications

PDF	232 Pages

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Manufacturer	RENESAS [Renesas Technology Corp]

Direct Link	http://www.renesas.com

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86 / 232 page

TW2837

FN7742 Rev. 1.00

Page 86 of 232

August 28, 2012

FIGURE 62 CHARACTERISTICS OF LUMINANCE FILTER

Chrominance Filter

The bandwidth of chrominance signal can be selected via the CBW (1xAA) register as shown in the following Figure

63.

FIGURE 63 CHARACTERISTICS OF CHROMINANCE FILTER

Digital-to-Analog Converter

The digital video data from video encoder is converted to analog video signal by DAC (Digital to Analog Converter). The

analog video signal format can be selected for each DAC independently via the DAC_OUT (1xA1, 1xA2) register like

the following Error! Reference source not found.. Each DAC can be disabled independently to save power by the

AC_PD (1xA1, 1xA2) register. The video output gain can also be controlled via the VOGAIN (0x41, 0x42) register.

x 10

-45

-40

-35

-30

-25

-20

-15

-10

-5

Frequency (Hertz)

0.5

1.5

2.5

x 10

-25

-20

-15

-10

-5

Frequency (Hertz)

TW2837 Datasheet(PDF) 86 Page - Renesas Technology Corp