CX23102 Broadcast USB Audio/Video Decoder

Features

USB 1.1/2.0 compliant bus

Support for the following audio

formats: Stereo, Mono, Dual

Language (Mono), Tri Language

(Trivox)

provided for a two-tuner design to

noise)

Macrovision 1.0 Detection Compliant

Support for the following video

formats: Composite, S-Video, 480i

YPrPb, RBG Packed, YCrCb Packed,

10-bit Packed, and YCrCb/YUY2

Format

Advanced consumer IR functionality

enables systems to receive, learn, and

blast IR signals

High-quality multi-tap horizontal and

vertical image scaler for decoded

video or 4:2:2 sources

Auxiliary Phase Locked Loop (PLL)

clock for general use

Integrated analog demodulator

compatible with direct IF tuners

Worldwide audio and video decoding

Automatic video and broadcast audio

standards detection and configuration

Flexible video input MUX supporting

composite, S-Video, and component

inputs with integrated anti-alias

filtering

Integrated sigma-delta stereo audio

ADCs with 4:2 MUX

Audio sample rate converters on all

inputs and outputs

Two MPEG transport stream ports:

Parallel and Serial

Two program stream inputs

accommodating serial or parallel

interfaces

Programmable VBI data slicer for data

services such s closed caption, WSS,

and program guides, such as

GEmstar 1x & 2x

ITU-R BT.656 output port

Demodulator low or high IF for direct

IF tuners

Overview

The CX23102 brings Conexant’s

long heritage of audio and video

capture solutions to systems that

enable universal serial bus

architectures. The CX23102

integrates all the functions

required to perform television and

external

A/V capture on personal

computers or consumer electronic

devices.

The CX23102 decoder enables

the capture of analog and digital

broadcast streams on personal

computers through an integrated Universal Serial Bus (USB) interface. The

device can capture a single analog stream, two simultaneous digital television

transport streams, or a combination of analog and digital programming. In

addition, analog, hybrid and combo configurations may be used in conjunction

with hardware MPEG encoders.

The CX23102 integrates anti-aliasing, noise rejection filters and automatic gain

control (AGC) and also includes an integrated analog IF demodulator

compatible with low IF tuners. Quality video is accomplished by using 10-bit

video ADCs, a full 10-bit video data path, and a horizontal and 5-tap vertical

scaling, hue, brightness, saturation, and contrast controls.

For high-quality audio, the CX23102 has analog to digital converters for stereo

audio capture and a minimum of 16-bit audio resolution through the entire audio

data path which ensures high fidelity audio, whether it comes from the

integrated broadcast audio decoder or the ADCs. The audio path includes an

automatic volume control function and two assignable stereo processing units

for control of volume, three-band equalization, and balance. The level of audio

and video integration provided by the CX23102 removes the need for additional

broadcast audio decoding and processing chips or external sound

demodulation chips. It also reduces the overall bill of materials (BOM) for the

system developer, without compromising audio and video performance.

Part Number CX23102

Description USB Broadcast Audio/

Video Decoder