NXT 2006 DTV Cable Tranceiver and Terrestrial Receiver - Overview

The NXT2005 DTV Cable Transceiver and Terrestrial Receiver is configurable to work in either the ATSC compliant 8 VSB reception mode for terrestrial broadcasting or in the OpenCable™/ ITU-J.83B/SCTE DVS-031/ DOCSISTM compliant 64 QAM or 256 QAM and QPSK modes for Digital Cable Ready 1, 2, and 3 downstream reception and return path transmission. The NXT2005 is designed for a variety of applications including off-air and cable digital television receivers, set-top boxes, PCTV and datacast appliances where cost and industry leading performance are a must.

The NXT2005 is based on the same VSB and QAM demodulator technology available in the NXT2002. In addition, it incorporates the QPSK forward data channel receiver and the QPSK/QAM reverse data channel modulator all in one highly integrated solution. The FDC receiver and RDC transmitter provide a direct digital interface to OpenCable compliant Point of Deployment (POD) modules.

For 8 VSB and QAM, the sparsed equalizer provides better AWGN performance, exceptional dynamic multipath tracking, and less stochastic jitter than conventional equalizers. Advanced integrated adaptive control provides fast reliable acquisition and re-acquisition. These advancements in equalizer technology improve the overall demodulator performance resulting in reliable operation in environments where competing solutions may not acquire or maintain signal lock.

The NXT2005 is capable of reporting detailed statistical and signal quality information to the host processor. The RF Sense input, together with the signal quality information, enhance the end user’s ease of operation. The high level of on-chip integration further reduces the number and cost of external components.