  |
 |
       |
 |
 |
 |
| Badland |
| Compulogic |
| Connect One |
| Eazix |
| Emtac |
| EnOcean |
| GPS Source |
| |
| Ezurio |
Search TDC TDC is part of the  |
|
Set
Top Boxes
 |
||
|
A universal
component of the Conexant Set Top Box platform is the MPEG video
processor. These MPEG devices serve as the basis of our Digital
cable, Terrestrial and Direct Broadcast Satellite |
||
| Product | Manufacturer | |
|
||
| Digital
Cable |
||
| CX24420 Universal Digital Cable Transceiver | Conexant | |
| CX24430/35 Interactive Cable TV Decoder | Conexant | |
| Digital Terrestrial | ||
| Brady: DVB-T Converter Box Design | Conexant | |
| CX22702 DTV Demodulator/Decoder | Conexant | |
| Free-to-Air Products | ||
| DBS
Satellite Solutions |
||
| CX24108 Satellite Tuner | Conexant | |
| CX24109/121 Digital Satellite Tuner & QPSK/FEC Demodulator | Conexant | |
| CX24110 Demodulator IC | Conexant | |
| CX24130 Dual QPSK/BPSK Demodulator IC | Conexant | |
| CX24121 BPSK/QPSK Demodulator FEC/IC | Conexant | |
| CX24123 Digital Satellite Demodulator DVB/DDS/DCII | Conexant | |
| CX24152/3/4/5/6 Satellite System IC | Conexant | |
| MPEG Video Processors | ||
| CX22490/CX22496 Interactive TV Decoders | Conexant | |
| CX22492/CX22493 Interactive TV Decoder IC | Conexant | |
| CX23415 MPEG Codec | Conexant | |
| CX23416 MPEG Encoder | Conexant | |
|
||
| Digital
Cable
|
||
CX24420 Universal Digital Cable Transceiver
|
||
CX24430/CX24431 Interactive Cable TV Decoder
Conexant's
highly integrated, single IC, MPEG-2/DVB-compliant, decoder/transceiver
solution for digital cable television receivers.
Conexant's broadband
communications portfolio includes a comprehensive suite of semiconductor
solutions that enable the digital home and information network.
Adding to this impressive line up are the CX24430 and CX24431
Interactive
Cable TV Decoder ICs. This highly-integrated product combines a
high-speed broadband cable modem and an interactive TV broadcast
service decoder
onto a single chip. It is a breakthrough in IC integration that
will allow set-top box manufacturers to offer advanced, fully-interactive
broadband home gateways or other set-top appliances for the price
of an entry-level product that only receives TV broadcasts. The
CX24431
IC version supports NDS Videoguard ® condition access technology. |
||
| Digital
Terrestrial
|
||
|
Brady: DVB-T Converter Box Design
|
||
| CX22702
Single-Chip DTV Demodulator/Decoder for DVB-T Systems Conexant’s CX22702 is a single-chip coded orthogonal frequency division multiplex (COFDM) demodulator/decoder solution for both 2K and 8K digital video broadcast-terrestrial (DVB-T) systems. Providing exceptional echo performance, the device is ideally suited to receiving the broadcast signal in countries deploying single frequency network (SFN) implementations of the DVB-T system. The cost-effective CX22702 also offers a high level of integration, along with the ability to sample the incoming signal at a high or low intermediate frequency (IF). Along with COFDM demodulators, Conexant also offers interactive TV decoder products — the CX2249x family — to provide low-cost solutions for the core electronics of platforms deployed in digital terrestrial TV networks. Input Signal The CX22702 can accept an input signal centered at a high IF of either approximately 36.167 MHz (typical for 7 MHz or 8 MHz channels) or 44.1 MHz (for a 6 MHz channel). Alternatively, the input signal could be at a low IF of approximately 4.57 MHz. The input is an analogue signal, which is sampled using the internal 10-bit analogue-to-digital converter (ADC). The device can meet European requirements for adjacent-channel performance with a single SAW filter. The CX22702 uses digital filters to remove adjacent channel signals (e.g., NICAM). The tuner’s automatic gain control (AGC) is controlled via a single or dual sigma-delta feedback. Only a simple RC filter is required to generate the analogue control voltage. From IF Input to MPEG Output The CX22702 performs all the functions required to produce an MPEG transport stream output from the IF input. First, it detects impulse interference by performing a proprietary analysis of the OFDM waveform and a detector in the AGC. Then the time domain adaptor enables the chip to address 6, 7, and 8 MHz bandwidth channels as well as adapt to different IFs, sample timing and frequency offsets. In addition, the time domain adaptor removes adjacent channel interference and removes the cyclic prefix prior to the fast fourier transform (FFT). During channel acquisition, the time domain adaptor uses a set of algorithms that allow frequency, sample timing, and guard interval lock to be achieved quickly and reliably before switching to a different set of algorithms, which provide good tracking performance. For optimal performance in an SFN, the position of the FFT window is dynamically located to the strongest signal present in the guard interval. The CX22702 can interface directly to all Conexant TV decoder devices and other commonly available MPEG transport demultiplexer chips, as well as directly to a DVB common interface. The data rate is smoothed to remove gaps introduced by the COFDM guard interval and variation in processing time within the forward-error correction (FEC) circuitry. This allows a stable clock reference to be extracted from the transport stream more quickly, further reducing the overall time before the viewer sees a picture. Features Implements complete DVB-T (ETS 300 744) standard DTG, EACEM and NorDig compliant 2K and 8K transmission modes Optimised for SFN environments Dynamic FFT window positioning Active impulse noise filtering Input signal can be sampled at high or low IF Meets European requirements using single SAW filter AWGN performance <18.0dB (64 QAM, 2/3 code rate) Excellent CCI PAL performance Differential or single-ended integrated 10-bit ADC Single or DualAGC feedback to tuner Four GPIO/ DAC pins Internal digital AFC loop (no feedback to tuner) Internal digital clock recovery loop (fixed frequency input, no need for VCXO) Channel estimation and correction Common phase-error correction Fast automatic channel-acquisition time Maintains and uses channel state information (CSI) Serial (I2C compatible) host interface Can achieve automatic lock from initial frequency offsets of up to 200 kHz 6, 7 and 8 MHz channel support Serial or parallel MPEG transport stream output suitable for direct connection to transport demux chips (CX22490TV decoder range) Minimal host software required JTAG boundary scan Low power consumption: < 1.0W 100-pin MQFP |
||
| CX22707
Single-Chip DTV Demodulator/Decoder for DVB-T Systems The CX22707 is a highly integrated digital TV demodulator/ decoder solution optimised for the 2K modes of the DVB-T terrestrial digital video broadcast system. The device provides significant BOM savings for the OEM. In addition, the CX22707 is fully self-configurable, requiring no external host software and provides industry-leading performance. Features Implements entire DVB-T standard High-IF sampling leading to low BOM Fast channel acquisition No real-time software requirement Field-proven high performance 2K transmission mode |
||
 |
||
|
Registered in UK No. 1065925 VAT No. 200 6983 82
TDC is a trading name of Abacus Electronic Holdings Ltd. Registered Office: Abacus House, Bone Lane, Newbury, Berkshire, RG14 5SF, UK. |