B C M 4 2 0 1 U N I V E R S A L S AT E L L I T E R E C E I V E R
The Broadcom BCM4201 is a universal QPSK
receiver for DIRECTV
, DVB and DigicipherTM II
digital satellite reception
Integrated satellite receiver
2-85 Mbps variable rate BPSK/OQPSK/QPSK receiver
Dual integrated 8-bit A/D converters
Dual square-root Nyquist matched filters (
=0.2-0.35)
All digital clock and carrier recovery
Integrated PLLs
DVB/DIRECTV/Digicipher II-compliant FEC decoder
64-state Viterbi decoder supports rates = 5/11, 1/2, 3/5,
2/3, 3/4, 4/5, 5/6, 6/7, 7/8
Programmable convolutional deinterleaver, I=12 or 13
with internal RAM
Reed-Solomon decoder: (n,k) = (204,188) or
(146,130): t=8
Seamless interface to BCM3440 CMOS satellite tuner
or direct IF input
I
2
C and SPI compatible microcontroller interface
IEEE 1149.1 (JTAG) test interface
80-pin PQFP pin package
3.3 Volt operation
Satellite IRD Block Diagram
B C M 4 2 0 1 F E A T U R E S
S U M M A R Y O F B E N E F I T S
A universal digital transmission solution for DVB,
DSS and Digicipher II systems
An integrated solution enabling low complexity/low
cost digital satellite IRDs
Variable data rates support all satellite systems
worldwide
Integrated 8-bit A/D converters and PLL reduce
system manufacturing costs
Receives up to 85 Mbps for high-speed applications
Operates down to 1 MBaud with excellent adjacent
channel rejection characteristics due to 8-bit A/Ds
for low-speed applications such as SCPC
Specialized circuitry provided for cycle slip
minimization
On-chip BER tester to simplify system optimization
BCM7020
HDTV MPEG-2
Transport Demux,
Audio/ Video
Decoder and
Display Engine
BCM3440
SatelliteTuner
Memory
Conditional
Access
HD Video
Audio
L-band
Host CPU
BCM4201
DVB-S
Satellite Receiver
PRODUCT
Brief
B C M 42 01
The BCM4201 Universal Satellite Receiver is an integrated digital
transmission solution for satellite Integrated Receiver Decoders
(IRDs). Integrated features in the BCM4201 include a 2-85 Mbps
variable rate BPSK/QPSK/OQPSK receiver, dual 8-bit A/D
converters, a phase/frequency recovery block, variable rate digital
filters, square-root Nyquist matched filters, acquisition and
tracking loops, and a DVB/DIRECTV
/Digicipher
TM
II compliant
concatenated Viterbi/Reed-Solomon FEC decoder with
deinterleaver. The receiver accepts an analog baseband or IF
modulated (up to 480 MHz) signal, and transmits a demodulated
error corrected output data stream. The BCM4201 supports the
DVB digital transmission standard for satellite broadcasting, that
is in worldwide use today, the DIRECTV digital transmission
standard and Digicipher II ITU-R 217/11 digital transmission
standard.
Analog waveforms received by the BCM4201 are sampled by
the integrated A/D converters, digitally mixed to baseband,
resampled, and filtered by dual square-root Nyquist filters.
Optimized soft decisions are delivered to a programmable rate
64-state Viterbi decoder, frame synchronization block,
deinterleaver, t=8 Reed-Solomon FEC, and derandomizer. The
final error-corrected output is delivered in MPEG-2 or
DIRECTV transport stream format.
The BCM4201 is a very flexible, cost-effective solution. It is
compatable with DVB, DIRECTV and Digicipher II ITU-R
217/11 standards, enabling manufacturers to design the
BCM4201 into a single-standard IRD or a multi-standard IRD.
The receiver supports variable bit rates up to 85 Mbps, which
allows it to adapt to various satellite transponders in Europe,
North America, and Asia. The BCM4201 is capable of
supporting low rate applications, down to 1 MBaud, for
applications such as SCPC. The BCM4201 is optimized for
high-volume manufacturing. This level of integration in the
BCM4201 significantly reduces the cost and complexity of
manufacturing IRDs.
The BCM4201 contains an extremely accurate on-chip
BER tester to simplify laboratory set-up and system
optimization. Specialized circuitry has been implemented
to virtually eliminate cycle slips.
B C M 4 2 0 1 O V E R V I E W
Phase/
Frequency
Recovery
JTAG[3:0]
RA_I + / -
AGC_CTRL
S_DATA
S_VALID
S_CLK
S_SYNC
MICRO[3:0]
P_DATA[7:0]
LNB_CTRL
Variable
Rate
Demod/
Equalizer
8
8
Viterbi
Decoder
k=7
Synch &
Deinter-
leaver
I=12,13
RS
Decoder
t=8
&
Descram
Deinterleaver
RAM
M-Bus/SPI
Interface
JTAG
Interface
Acquisition/Tracking Loops
and Clock Generation
A/D
Down
Conversion
Pre-processing
A/D
Nyquist
= .20 - .35
Nyquist
= .20 - .35
Phone: 949-450-8700
FAX: 949-450-8710
Email: info@broadcom.com
Web: www.broadcom.com
Broadcom
, the pulse logo
and Connecting Everything
TM
are trademarks of
Broadcom Corporation and/or its subsidiaries in the United States and certain other countries.
Digicipher
TM
is a trademark of General Instrument (now Motorola).
DIRECTV
is a registered trademark of DIRECTV, INC., a unit of Hughes Electronics Corporation.
All other trademarks are the property of their respective owners.
BROADCOM CORPORATION
16215 Alton Parkway, P.O. Box 57013
Irvine, California 92619-7013
2002 by BROADCOM CORPORATION. All rights reserved.
4201.PB02-R-4.12.02
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