BCM4201 Broadcom Corporation, BCM4201 Datasheet - Page 2

• Manufacturer Part Number: BCM4201
• Description: Universal Satellite Receiver
• Manufacturer: Broadcom Corporation

www.DataSheet4U.com
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
concatenated
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,
Broadcom
Broadcom Corporation and/or its subsidiaries in the United States and certain other countries.
Digicipher
DIRECTV
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
AGC_CTRL
RA_I +/ -
®
TM
®
, the pulse logo
is a registered trademark of DIRECTV, INC., a unit of Hughes Electronics Corporation.
is a trademark of General Instrument (now Motorola).
Pre-processing
Conversion
Viterbi/Reed-Solomon
Down
®
and Connecting Everything
A/D
A/D
®
LNB_CTRL
8
8
/Digicipher
B C M 4 2 0 1
TM
Acquisition/Tracking Loops
Frequency
Recovery
FEC
are trademarks of
Phase/
and Clock Generation
decoder
TM
II compliant
Equalizer
Variable
Demod/
Rate
with
O V E R V I E W
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.
Nyquist
Nyquist
= .20 - .35
= .20 - .35
Decoder
Viterbi
Interface
k=7
JTAG[3:0]
JTAG
Deinterleaver
Synch &
Deinter-
I=12,13
leaver
RAM
M-Bus/SPI
Interface
Descram
Decoder
Email: [e-mail]
Web: www.broadcom.com
t=8
RS
&
Phone: [phone]
FAX: [phone]
S_DATA
S_VALID
P_DATA[7:0]
MICRO[3:0]
S_CLK
S_SYNC