Sharp LC-40CT2E (serv.man2) Service Manual ▷ View online
7.3
Absolute Maximum Ratings
7.4
Pinning
8 DVB-T/T2 DEMODULATOR – SONY CXD2820R
8.1 General Description
The Sony CXD2820R is a combined DVB-T2, DVB-T and DVB-C demodulator that conforms to
the ETSI EN 302-755 (second generation Terrestrial) ETSI EN 300-744 (Terrestrial) and ETSI EN
300-429 (Cable) standards.
the ETSI EN 302-755 (second generation Terrestrial) ETSI EN 300-744 (Terrestrial) and ETSI EN
300-429 (Cable) standards.
The CXD2820R is a DVB-T2 demodulator offering class-leading performance, optimised BOM
requiring no external memory and low processor overhead. It includes a highly integrated dual-
core DVB-T and DVB-C demodulator which complies with all relevant European performance
standards.
requiring no external memory and low processor overhead. It includes a highly integrated dual-
core DVB-T and DVB-C demodulator which complies with all relevant European performance
standards.
Figure 8.1 Block Diagram of SONY CXD2820R
Applications
• Set Top Boxes
• IDTV with Digital only or Hybrid Tuner Support
• PC TV
• PVRs and recordable DVD players
• Test equipment
• IDTV with Digital only or Hybrid Tuner Support
• PC TV
• PVRs and recordable DVD players
• Test equipment
8.2 Features
General Features
• Single, 41MHz crystal (can be shared with CXD2813R analogue demod IC)
• High performance differential signal ADC
• RF power level monitor ADC
• Low IF and high IF (36MHz) mode input
• Fast 400kHz I2C compatible bus interface
• Quiet I2C interface for dedicated tuner control
• Automatic IF AGC and optional programmable RF AGC/GPIO functions
• Configurable parallel and serial MPEG-2 TS outputs with smoothing buffer
• 3.3V, 2.5V, 1.2V supplies
• Temperature range -20°C to +85°C
• 64 pin exposed-pad LQFP 10mm x 10mm package
• Supplied with full reference design, including software driver, PCB schematic/layouts, GUI and
documentation
• Single, 41MHz crystal (can be shared with CXD2813R analogue demod IC)
• High performance differential signal ADC
• RF power level monitor ADC
• Low IF and high IF (36MHz) mode input
• Fast 400kHz I2C compatible bus interface
• Quiet I2C interface for dedicated tuner control
• Automatic IF AGC and optional programmable RF AGC/GPIO functions
• Configurable parallel and serial MPEG-2 TS outputs with smoothing buffer
• 3.3V, 2.5V, 1.2V supplies
• Temperature range -20°C to +85°C
• 64 pin exposed-pad LQFP 10mm x 10mm package
• Supplied with full reference design, including software driver, PCB schematic/layouts, GUI and
documentation
Features DVB-T
• Complies with all European standards for static and portable equipment including NorDig
Unified 2.0, DTG 6.0, Ebook
• Smart Auto Acquisition controller with fast 2k/8k acquisition, low processor overhead and re-
acquisition mode
• Acquisition range ±600kHz
• Automatic spectral inversion
• Enhanced in the following areas
• SFN perf. with pre/post-cursive echoes inside/outside guard
• Impulse noise cancellation algorithm compliant with DTG & Ebook
• ACI protection and performance with CCI
• Advanced channel corrector for low multipath loss and enhanced Doppler performance
• Access to channel echo profile, channel and individual carrier SNR, constellation and TPS data
(inc cell identification) via I2C
• Complies with all European standards for static and portable equipment including NorDig
Unified 2.0, DTG 6.0, Ebook
• Smart Auto Acquisition controller with fast 2k/8k acquisition, low processor overhead and re-
acquisition mode
• Acquisition range ±600kHz
• Automatic spectral inversion
• Enhanced in the following areas
• SFN perf. with pre/post-cursive echoes inside/outside guard
• Impulse noise cancellation algorithm compliant with DTG & Ebook
• ACI protection and performance with CCI
• Advanced channel corrector for low multipath loss and enhanced Doppler performance
• Access to channel echo profile, channel and individual carrier SNR, constellation and TPS data
(inc cell identification) via I2C
Features DVB-T2
• Supports all DVB-T2 modes, including
• Single and multiple-PLPs
• SISO and MISO transmission
• Simple API
• Fully-automatic acquisition
• Fully-automatic L1-signalling decoding
• Automatic guard-interval detection
• Automatically-calculated constant-rate TS output (using L1 signalling and ISSY)
• Acquisition range ±600kHz
• Stream processor for automatic common- and data-PLP combination
• Null-packet insertion
• Access to channel echo profile and constellation via I2C
• Supports all DVB-T2 modes, including
• Single and multiple-PLPs
• SISO and MISO transmission
• Simple API
• Fully-automatic acquisition
• Fully-automatic L1-signalling decoding
• Automatic guard-interval detection
• Automatically-calculated constant-rate TS output (using L1 signalling and ISSY)
• Acquisition range ±600kHz
• Stream processor for automatic common- and data-PLP combination
• Null-packet insertion
• Access to channel echo profile and constellation via I2C
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