PRODUCT BRIEF NXT2000 VSB/QAM Receiver * ATSC Compliant 8/16 VSB The NXT2000 Multimode IC can be configured to work in either the 8 VSB mode for terrestrial broadcasting or in one of 64 QAM, 256 QAM or 16 VSB mode for cable TV. * SCTE DVS-031, ITU-J.83B, and MCNS DOCSIS compliant 64/256 QAM demodulation and error correction The 8/16 VSB is ATSC compliant, and the 64/256 QAM is ITU-J.83B/SCTE DVS-031/ MCNS DOCSIS compliant. The IC includes both demodulation and forward-errorcorrection capabilities for all modes. * Superior, dynamic and static multipath performance The chip's 8 VSB mode demonstrates performance significantly better than what was shown for the Grand Alliance system at the ATTC for a multitude of impairments such * Equalization Range: -4.0 sec to 44.6 sec as static and dynamic multipath, phase noise, and acquisition time. The equalization * Superior interference cancellation (adjacent, co-channel ATSC, CSO/CTB) chip is also robust in the presence of impairments such as adjacent and co-channel range for the IC covers all known multipath conditions found in North America. The NTSC interference, impulse noise, etc. The chip's cable mode (especially 256 QAM and 16 VSB) demonstrates superior performance in the presence of multipath, phase * High phase noise tolerance noise, impulse noise, signal ingress - all impairments known to be significant problems in the cable environment. Its performance in the presence of CTB/CSO is exceptional. * Fast acquisition < 50 msec The chip includes a high performance internal A/D converter that is capable of direct * High Performance Internal 10 Bit A/D converter with internal reference IF input or near baseband analog input. The symbol rate can be programmed for different VSB/QAM modes without requiring a VCXO to drive the A/D converter. I2C * All Digital baud and carrier recovery, No external VCO or VCXO required is used for control. * Supports both low IF sampling and direct IF sampling at 43.75 or 44 MHz Demodulator/ Interface Cancellation * Parallel and Serial MPEG Data Output Matched Filter/ Interpolator Forward Equalizer Adaptation Controller Synchronization and Control Carrier Tracking Loop Decision Feedback Equalizer * Integrated Deinterleaver RAM * FEC error statistics are available to host From I/F * Integrated signal quality indicator 2 * I C control interface * 2.5/3.3 Volt power / 3.3 Volt compatible interface * Low Power: 1.25W 10 BIT A/D AGC To Transport/MAC Layer To Tuner I/F Trellis Decoder VSB Framing Control Frame Sync DeinterRS MPEG leaver Decoder Formatter I'C Control * Available in a 100 Pin TQFP Package NxtWave Communications 6 Venture, Suite 350, Irvine, CA 92618 * Phone 949-585-1800 * Fax 949-585-1818 www.nxtwavecomm.com * marketing@nxtwavecomm.com