bcm4501 Broadcom Corp., bcm4501 Datasheet - Page 2

• Manufacturer Part Number: bcm4501
• Description: Bcm4501 - Dual Dvb-s2 Advanced Modulation Satellite Receiver
• Manufacturer: Broadcom Corp.

The BCM4501 is a fully integrated dual satellite receiver single-chip
solution targeted at multituner advanced modulation satellite receiver
systems and ideally suited for new generation PVR-satellite receivers
and integrated multifunction Home Media Centers.
The BCM4501 integrates dual CMOS tuners and dual advanced
modulation decoders supporting DVB-S2 Broadcast and DVB-S
applications.
The highly integrated tuner sections are based on existing volume
production technologies in Broadcom and on a direct conversion
technology to reduce external components and increase performance.
It is designed to support the full 1–45 Msps DVB operating range with
support for 950-MHz to 2150-MHz input frequencies.
The BCM4501 contains four 8-bit A/D converters, all digital variable
rate QPSK/8PSK receivers, an advanced modulation LDPC/BCH FEC
decoder, and a DVB-S-compliant FEC decoder. All the required RAM is
integrated, and the required clocks are generated on-chip from a single
reference crystal. The baseband IQ analog waveforms from the tuner
sections are sampled by the integrated 8-bit A/D converters, then re-
sampled by the integrated interpolative digital filter banks.
Broadcom
the trademarks of Broadcom Corporation and/or its affiliates in the United States, certain other countries
and/or the EU. Any other trademarks or trade names mentioned are the property of their respective
owners.
BROADCOM CORPORATION
16215 Alton Parkway, P.O. Box 57013
Irvine, California 92619-7013
© 2006 by BROADCOM CORPORATION. All rights reserved.
4501-PB01-R
RF2
RF1
In
In
®
, the pulse logo, Connecting everything
08/11/06
DiSEqC
DiSEqC
FSK Transceiver
QPSK/8PSK
QPSK/8PSK
®
Tuner
Tuner
®
, and the Connecting everything logo are among
A/D
A/D
A/D
A/D
BCM4501 Block Diagram
O V E R V I E W
Variable Rate
Variable Rate
Demod
Demod
Optimized soft decisions are then fed into either a DVB-S-compliant
FEC decoder or an advanced modulation DVB-LDPC/BCH decoder.
The final error-corrected output is delivered in MPEG-2 transport
format. The output clock is generated by an on-chip PLL for low-jitter
operation and glueless integration with Broadcom’s high definition
audio video subsystems, such as the BCM7038 and BCM7401.
The communication link sections include an on-chip microcontroller for
all system configuration, acquisition, control, monitoring, and
diagnostics functions, plus dual integrated DiSEqC2.x controllers for
two-way communication with LNBs.
The BCM94501 reference design is available for easy system design and
testing using the BCM4501 device. Schematics, Gerber files, and
evaluation software are available.
Acquisition Processor
LDPC/BCH
LDPC/BCH
Decoder
Decoder
Decoder
Decoder
DVB-S
DVB-S
Phone: [phone]
Fax: [phone]
E-mail: [e-mail]
Web: www.broadcom.com
MPEG
TS1
MPEG
TS2
I
2
C/SPI