Sharp LC-39LE650E Service Manual page 56

LC-39/50LE650
LC-39/50LE651
LC-39/50LE652
MAJOR ICs INFORMATION ( continued )
Best-in-class real-world reception.
Exceeds discrete MOPLL-based tuners.
o
Industry-leading phase noise performance.
o
High immunity to Wi-Fi and LTE interference.
o
Low power consumption.
3.3 V and 1.8 V power supplies.
o
Single-supply option for 3.3 V-only operations.
o
Integrated power-on reset circuit.
Flexible output interface.
Combined ALIF/DLIF output to SoC.
o
Optional DLIF output to external demodulator.
o
IC1102: DVB-T/C Demodulator.
Part number: Si2165-D-GMR (SILICON LABS)
Sharp code: RH-IXD519WJZZY
http://www.silabs.com/Support%20Documents/TechnicalDocs/Si2165-short.pdf
The Si2165 is a compact standalone DVB-T/C digital TV. The analog front-end consists of two ADCs with wide dynamic range
(12-bit) to allow operation with standard IF (~36 MHz), Low-IF, or Zero-IF inputs. This enables the use of the Si2165 with any
TV tuner, either metal can or silicon tuner based.
The multi-standard demodulator supports all modes of DVB-T (EN 300 744), including hierarchical modes. The Si2165 also
supports ITU J.83 annex A/C and DVB-C (EN 300 429), including a user-configurable 31-tap equalizer. In addition to DVB-T's
legacy modes, the Si2165 also complies with DVB-H (EN 300 744 Annex F) specificities: 4K FFT, extended TPS, "native" and
"in-depth" de-interleavers. The Si2165 is able to receive DVB-H programs in fixed receiver applications (without decoding the
additional MPE FEC layer).
An embedded 32-bit DSP controls device operation. Sophisticated on-chip algorithms ensure optimum reception even under
difficult channel conditions, such as echoes outside the guard interval, pre-echoes, or strong impulse noise. For ease-of-use, DSP
firmware is preloaded into ROM (device is immediately active at power-up). Nevertheless, there is a possibility of downloading
additional patch code via the I2C interface (e.g., to adjust the demodulator to unexpected conditions or reception impairments).
Thanks to proprietary features, the Si2165 supports ultra-fast channel scanning for VHF/UHF terrestrial and cable DTV
channels. For supported tuners, the Quickscan algorithm for blindscan is running onto the embedded DSP (in order to limit the
host CPU load) and is provided as a downloadable patch file.
Serial or parallel master MPEG TS output modes are supported. Furthermore, a TS slave parallel mode is available via a GPIF
port and provides a glueless interface to Silicon Labs' MCU devices with embedded USB interface. The user can optionally
program a 32-PID hardware filter to reduce the output TS bit rate.
An internal I2C pass-through logic switch acts as an I2C repeater. This provides a "quiet" I2C bus to the RF front end.
A maximum of six general-purpose inputs/outputs are available; three GPIOs also feature Δ/Σ and interrupt output capabilities.
Best-in-class demodulation performance is achieved while still maintaining very low-power operation.
The Si2165 guarantees a low-cost system implementation due to its minimal BOM and very small package footprint.
Features:
DVB-T (ETSI EN 300 744) demodulator & FEC decoder.
ITU J.83 Annex A/C and DVB-C (EN 300 429) compliant demodulator & FEC decoder.
NorDig Unified 2.0, D-Book & C-Book 4.0 compliant.
56