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PDF CE6353 Data sheet ( Hoja de datos )

Número de pieza CE6353
Descripción Nordig Unified DVB-T COFDM Terrestrial Demodulator
Fabricantes Intel Corporation 
Logotipo Intel Corporation Logotipo



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No Preview Available ! CE6353 Hoja de datos, Descripción, Manual

CE6353
Nordig Unified DVB-T COFDM Terrestrial
Demodulator for
PC-TV and Hand-held Digital TV (DTV)
Data Sheet
Features
www.DataSheet4U.com
Compliant with ETSI 300 744 DVB-T, Unified
Nordig and DTG performance specifications
High performance with fast fully blind acquisition
and tracking capability
Low power consumption: less than 0.32 W, and
eco-friendly standby and sleep modes
Digital filtering of adjacent channels
Single 8 MHz SAW filter for 6, 7 & 8 MHz OFDM
Superior single frequency network performance
Fast AGC to track out signal fades
Good Doppler tracking capability
Enhanced frequency capture range to include
triple offsets
External 4 MHz clock or single low-cost
20.48 MHz crystal, tolerance up to +/-200 ppm
Automatic mode (2 K/8 K), guard and spectral
inversion detection
Very low driver software overhead due to on-chip
state-machine control
Novel RF level detect facility via a separate ADC
February 2006
Ordering Information
DJCE6353 882077
WJCE6353 882206
DJCE6353 S L9EN 882128
WJCE6353 S L9G5 882170
64 Pin LQFP Trays
64 Pin LQFP* Trays
64 Pin LQFP Tape and Reel
64 Pin LQFP* Tape and Reel
*Pb Free Matte Tin
• Pre and post Viterbi-decoder bit error rates, and
uncorrectable block count
Figure 1 - Block Diagram
1
Intel Corporation
D55752-001
Intel and the Intel logo are registered trademarks of Intel Corporation or its subsidiaries in the United States and other countries.
*Other names and brands may be claimed as the property of others. Copyright © 2006 Intel Corporation. All rights reserved.

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CE6353 pdf
CE6353
Data Sheet
List of Tables
Table 1 - Pin Names - numeric. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Table 2 - Pin Names - alphabetical order . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Table 3 - Timing of 2-Wire Bus. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
5
Intel Corporation

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CE6353 arduino
CE6353
Data Sheet
Figure 4 - FEC Block Diagram
The FSM controller shown in Figure 3 controls both the demodulator and the FEC. It also drives the 2-wire bus to
the tuner. The controller facilitates the automated search of all parameters or any sub-set of parameters of the
received signal. It can also be used to scan any defined frequency range searching for OFDM channels. This
mechanism provides the fast channel scan and acquisition performance, whilst requiring minimal software
overhead in the host driver.
The algorithms and architectures used in the CE6353 have been optimized to minimize power consumption.
2.1 Analog-to-Digital Converter
The CE6353 has a high performance 10-bit analog-to-digital converter (ADC) which can sample a 6, 7 or 8 MHz
bandwidth OFDM signal, with its spectrum centred at:
• 36.17 MHz IF
• 43.75 MHz IF
• 5 - 10 MHz near-zero IF
An on-chip programmable phase locked loop (PLL) is used to generate the ADC sampling clock. The PLL is highly
programmable allowing a wide choice of sampling frequencies to suit any IF frequency, and all signal bandwidths.
2.2 Automatic Gain Control
An AGC module compares the absolute value of the digitized signal with a programmable reference. The error
signal is filtered and is used to control the gain of the amplifier. A sigma-delta modulated output is provided, which
has to be RC low-pass filtered to obtain the voltage to control the amplifier.
The programmable AGC reference has been optimized. A large value for the reference leads to excessive ADC
clipping and a small value results in excessive quantization noise. Hence the optimum value has been determined
assuming the input signal amplitude to be Gaussian distributed. The latter is justified by applying the central limit
theorem in statistics to the OFDM signal, which consists of a large number of randomly modulated carriers. This
reference or target value may have to be lowered slightly for some applications. Slope control bits have been
provided for the AGCs and these have to be set correctly depending on the gain-versus-voltage slope of the gain
control amplifiers.
11
Intel Corporation

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