DVB Development

1. Brief list of devices worked with:
Chipsets
 CONEXANT – CX2417x
MPEG-2/DIRECTV/DVB compliant, decoder IC solutions with embedded 32-bit
ARM920T RISC processor for high-definition digital TV systems with optional PVR
support. It is used in conjunction with CX2418x series (32-bit ARM926EJ-S CPU)
solution for MPEG4 AVC / H.264 decoding. It combines a flexible, multi-program
HDTV MPEG-2 video decoder, a dual program multi-format audio decoder, three
multi-standard dual stream transport processors, an advanced 2D graphics
processor, dual TV encoders, an HDMI transmitter, an RF modulator, a BTSC stereo
encoder, dual multi-plane display compositing engines, and a high performance, and
integrated peripheral I/O ports.
 Fujitsu - MB86H60
A highly integrated SoC with ARM1176JZF-S CPU @ 324 MHz. It decodes full HD
(1920dots x 1080 lines) video compressed in either MPEG-2 or H.264 and integrates
on a single chip the necessary processing functions for an HD broadcast receiver,
including processing of digital video, audio, and graphics. This makes the multi-
decoder product suitable for TVs, STB, and portable TV receivers.
 ST - STi5518
It integrates ST20C2+ 32-bit processor core, a dedicated block for DVB/DirecTV
transport demultiplexing and descrambling, modules for MPEG-2 video and audio
decoding with 3D-surround and MP3 support, advanced display and graphics
features, a digital video encoder and all of the system peripherals required in a
typical low-cost interactive receiver.
 XILINX SPARTAN FPGA
400K System gates, 8,064 logic cells, 4 DCM’s. To carry Transport streams to and
from other devices with similar interface.

2. Tuners
 MC44S803
Highly integrated third generation silicon tuner that receives 48 MHz to 861 MHz
radio frequency (RF) signals and converts them to a second intermediate frequency
(IF) of 30 MHz to 60 MHz. It provides two IF outputs to support systems with
multiple demodulators (e.g. one digital demodulator and one analog TV
demodulator).
 CX24118
Advanced Modulation Digital Satellite Tuner for DVB-S (QPSK), 8PSK and DVB-S2
applications offering excellent phase noise performance and very low
implementation loss.
Digital Demodulators
 CX24116
Advanced Modulation DVB-S2 Demodulator and FEC Decoder complying complies
with the open DVB-S2 standard for advanced modulation (8PSK modulation with
LDPC/BCH Forward Error Correction), as well as legacy DVB and DTV specifications.
 STV0362
Low power and ultra-compact DVB-T single chip receiver which is DVB-H broadcast
compliant as well. Provides various error-rate monitors like C/N estimator,
Constellation and frequency response display, BER estimator, PER estimator.
 STV0297
QAM demodulator IC capable of decding ITU-T J.83-Annexes A/B/C and DVB-C
bitstreams. It also provides Integrated signal quality monitors and lock indicator.
 MXD0325
A high performance demodulator IC fully compliant with China Digital Television
Terrestrial Broadcasting (GB 20600-2006) standard and satisfying the stringent
performance requirements of the General Specification for Terrestrial Digital
Television Receivers (nation standard draft by MII). It supports all 330 modes defined
in the standard, including both the single-carrier and multi-carrier modes.

3. Toolset
Firmware Tools
 CONEXANT – MultiICE with ADS / RVDS
 ST- ST20
 Fujitsu – MultiICE with Metaware and RVDS.
RTOS
 NUCLEUS
 ST-OS20
 Linux
 Fujitsu-FAMOS
Audio Codecs
MP3, MPEG4 AAC, AAC+, Dolby AC3, WMA etc.
Video Codecs
MPEG1/2/4 video decoders supporting various profiles & levels and resolutions (QCIF, CIF,
4CIF, QVGA, VGA) and supporting various output formats like NTSC and PAL, HD up to 1080i.
Hardware Design Tools
 Orcad
 PADS
 Hyperlinx
 Protel
 Cadstar

4. Interfaces
 HDMI – Audio & video output interface for external display devices.
 ASI – To transfer Transport streams to and from other devices.
 USB – For transport stream, channel plans and other data storage.
 SPI – For transport stream, channel plans and other data storage.
 I2C – To facilitate processor to communicate and configure other devices.
 I2S - For audio control.
 SPDIF - For audio output.
 PCMCIA – For data storage device like Compact flash.
 DVB-CI - For Conditional Access
 Ethernet – For configuring the equipment through PC.
 GPIO – General purpose I/O controls.
 LVDS – To transfer Transport streams to and from other devices with similar
interface.
 User Interfaces
o Touch screen – up to 4096 x 4096 resolution (Resistive)
o Keypad
o Rotary encoder
o Infrared remote controller
o LCD – up to 1280 x 720 over LVDS & RGB

5. Case Studies
DVB Analyzer
It is a complete test instrument for digital TV signals according the DVB-T, DVB-C and DVB-
S/S2 standards, for standard definition (SD) TV and high definition (HD) TV with following
User Interface options.
a) Touch screen
b) Keypad
c) Rotary encoder
It supports following Audio-Video formats like MPEG-2, MPEG4 AVC H.264, AAC-PLUS.
It provides following types for basic measurement presentations
 Single frequency measurements: It allows presentation of demodulated signal (video
and audio) and all measurements (like MER, CBER, VBER, LBER, C/N, Power etc.)
available according to the kind of signal input and is displayed as a graph bar.
 Multiple frequency measurement in graphic mode: It provides a graphic presentation
(like a bar graph diagram) for one or two selected parameters for each frequency in a
frequency list.
 Multiple frequency measurement in batch mode (data logger): from a frequency list
provided, the instrument will perform a single scan by selecting each frequency in the
list and performing a complete measurement for the point selected. These results can
be stored into a file linked to the frequency list used and retrieved later.
 Antenna alignment presentation: This mode provides fastest possible graphic
presentation of input level for all frequencies in the band of interest (satellite or
terrestrial).
 Special constellation presentation: for each kind of modulation (DVB-T, DVB-C, DVB-
S/S2), including carrier-specific constellation in case of DVB-T.
Ensoft scope of work:
 Analysis and Design
 Firmware development
 Hardware design
 PCB design
 Prototyping
 Testing with modulators
 Testing with real-signals (unavailable signals tested on-site)
Customer’s scope:
 Enclosure design & Prototyping
 Testing with real-signals.

6. Transport
Streams
CX2417x MPEG-2 Decoder Controller
with MPEG-4 Coprocessor
I2C
Single
tuner for
Terrestrial
as well as
Cable
RF
Input
DVB-T
Demodulator
COFDM
Demodulator
FEC
High
performance
Viterbi/ Solomon
decoder
RF Level
Indicator
AGC
Differential
IF Output
I2C
ASI TS
In and
Out
Interface
Wide
Screen
LCD for
SD as
well as
HD Video
Ethernet Hard
Disk /
Flash
IDE
User
Interface
Push
Buttons /
Touch
Screen
MPEG 2/4 Video
and Audio
storage
File ManagementStream
Management
(Playback,
recording, Live
Data)
Control Application Software
Speaker
CONEXANT Conditional
Access Stack
DVB-C
Demodulator
QAM
Demodulator
FEC
High
performance RS
decoder
RF Level
Indicator
AGC
Differential
IF Output
I2C
I2C
I2C
DVB-CI
Slot
(PCMCIA)
USB 2.0
SPI
Interface
Input
Selection
unit
I2C
Control
from
CX2417x
HDMI
Interface
TS
Switch
TS
Switch
TS
Switch
Input
attenuator
DVB-S/
DVB-S2/
DSS Tuner
DVB-S / S2 / DSS
Demodulator
QPSK/8PSK
Demodulator
FEC
High performance
Viterbi/ Solomon
/LDPC/BCH
decoder
I,Q CLK
I2C
RF Level
Indicator
AGC

7. DTMB Analyzer
A project developed in a collaborative way including customer’s intervention at certain
stages with DTMB, DVB-C and DVB-S/S2 front-ends.
It supports following Audio-Video formats like MPEG-2, MPEG4 AVC H.264, AAC-PLUS.
Ensoft scope of work:
 Analysis and Design
 Firmware development
o DTMB demodulator driver integration.
o Measurement of parameters (MER, LDPC-BER etc.) and Presentation in a Bar
graph display.
o Constellation diagram.
o Echoes identification and presentation on a bar graph display.
 Testing with modulators
 Testing with real-signals (unavailable signals tested on-site)
Customer’s scope:
 Hardware design & Prototyping
 Basic application design
 Enclosure design & Prototyping
 Testing with real-signals.

8. Transport
Streams
I2C
RF
Input
DTMB Demodulator
ADC, Channel
Estimation, Auto-
mode detection,
FFT, De-interleaver
FEC
Descramble
BCH
LDPC
RF Level
Indicator
I2C
ASI TS
In and
Out
Interface
Wide Screen LCD
for SD as well as
HD Video
Ethernet
Hard
Disk /
Flash
IDE
User Interface Push
Buttons / Rotary
Encoder
Speaker
DVB-C
Demodulator
QAM
Demodulator
FEC
High
performance RS
decoder
RF Level
Indicator
AGC
Differential
IF Output
I2C
I2C
I2C
DVB-CI
Slot
USB 2.0
Input
Selection
unit
I2C Control
from
Processor
HDMI
Interface
TS
Switch
TS
Switch
TS
Switch
Input
attenuator
DVB-S/
DVB-S2/
DSS Tuner
DVB-S / S2 / DSS
Demodulator
QPSK/8PSK
Demodulator
FEC
High performance
Viterbi/ Solomon
/LDPC/BCH
decoder
I,Q CLK
I2C
RF Level
Indicator
AGC
Single
tuner for
Terrestrial
as well as
Cable
AGC
Differential
IF Output