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RDA5888

Fully Integrated, Low Power Analog TV On a Chip

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RDA Microelectronics, Inc. RDA5888-Fully Integrated SOC for ATV

DSP Functional Description

Figure 2. RDA5888 DSP Block Diagram

Radio Baseband

The radio basebasnd receive I/Q signal from

ADC,it includes sinc downsample,AGC(auto RF

gain and digital gain control) ,RSSI(receive signal

strength indicator) and channel filtering.

FM Demodulator

The FM demodulator includes channel selection,

FM demodulation,adaptive noise cancellation,

programmable de-emphasis(50/75 µs),bass boost,

volume control. Digital audio stream is converted into analog

througn DAC.

VSB Demodulator

The VSB demodulator is an AM Vestigial

Sideband demodulator for CVBS signal recovery.

format according to register-selected. It can be

divided into a luminance path and a chrominance

path. The luminance path first clamp the video

signal, then calibration to target level and through

a luma filter. The chrominance path has a color

subcarrier recovery unit to regenerate the color

subcarrier for any modulated chroma scheme and

then performs an AM demodulation for PAL and

NTSC and an FM demodulation for SECAM

according to w w w . D a t a S h e e t . c o . k r register-selected. YcbCr to ITU-601

interface is converted from YUV/YIQ/YRB .

.

ITU-601 Interface

The ITU-601 Interface is an ITU-601 compliant

8bit 4:2:2(YcbCr) parallel interface which include

dclk,hsync,vsync,data[7:0].dclk,hsync,vsync all

have polarity option. Below is the timing for the

bus:

PAL/NTSC/SECAM Decoder

The PAL/NTSC/SECAM decoder can handle

NTSC,PAL,SECAM, M,D,B,I,G,H,L,K in CVBS

The information contained herein is the exclusive property of RDA and shall not be distributed, reproduced, or disclosed in

whole or in part without prior written permission of RDA.

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Datasheet

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