BCM3520_06 Datasheet, PDF (1/2 Pages) Broadcom Corporation. – ATSC/NTSC/QAM DIGITAL CABLE READY DTV RECEIVER

BCM3520
®
ATSC/NTSC/QAM DIGITAL CABLE READY DTV RECEIVER
FEATURES
SUMMARY OF BENEFITS
• Integrated VSB/QAM QAMLink^® receiver
- 12-bit A/D converter with internal AGC amplifier
- Full equalizer architecture spans up to –35 to 49 µs delays
- Direct IF sampled architecture reduces system cost
- Single IF signal path for QAM/VSB/NTSC to reduce system
costs
- ITU-T J.83 Annex A/B/C FEC modes
- MPEG-2 transport output (serial/parallel)
- All-digital clock and carrier recovery
- Integrated PLLs to minimize external components
- All acquisition times typically less than 50 ms
• QPSK out-of-band receiver
- 100–200-MHz receiver LO with input AGC and 6-bit A/D
- Variable symbol rate QPSK receiver
- Digital demodulator, Nyquist filters, tracking loops, and
four-tap adaptive equalizer
- DVS-167 (Davic™)/DVS-178 (DigiCipherII™) FEC decoder
• NTSC/PAL IF Demodulator
- Adjacent channel rejection filters
- Programmable digital audio trap filter
- Programmable group delay compensation filter
- Analog Composite Video Baseband Signal (CVBS) output
- FM demod output supports internal BTSC stereo decoder,
external BTSC stereo decoder (baseband or IF input), or
external Zweiton M decoder
• Integrated acquisition controller
• EIA/CEA-909 antenna interface
• 144-pin LQFP package
• Complete DTV single chip receiver solution
• FCC VSB and Digital Cable Ready
• Superior performance under both static and dynamic multi-
path channel conditions
• Integrated NTSC demodulator
• BTSC decoder on chip
• Direct interface to CMOS and discrete DTV tuners
• Reduces system costs through direct IF sampling
• Single IF path for QAM/VSB/NTSC simplifies board design
• Smart antenna support
• Automatic NTSC co-channel interference and RFI rejection
filters
• Integrated de-interleaver RAM for VSB FEC, and QAM for
modes up to J=4 reduces system costs
• Analog stereo, mono, or SAP outputs
• I²S or baseband multiplexed audio output
• On-chip stereo audio DACs
• BSC master to control peripherals
Plug and Play DTV System Solution
Cable
ATSC
BCM3431
LNA
BCM3418
Tuner
Out-of-Band
BCM3520
VSB/QAM
OOB/CableCard™
MPEG Transport Serial/Parallel
Composite Video
Audio: I2S, L/R, Multiplex Baseband, IF Audio
Out-of-band Transport
EIA/CEA-909
Smart Antenna Interface