BCM4500 Broadcom Corporation, BCM4500 Datasheet
BCM4500
Manufacturer Part Number
BCM4500
Description
Manufacturer
Broadcom Corporation
Datasheet
1.BCM4500.pdf
(2 pages)
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All-digital satellite receiver
- 256-kilobaud to 30-megabaud variable rate receiver
- Supports BPSK, QPSK, 8PSK, & 16QAM modulation
- Dual integrated 7-bit A/D converters
- Digital square-root Nyquist filters (a=0.2, 0.35)
- All-digital clock and carrier recovery
- 12-tap adaptive equalizer
Advanced modulation turbo FEC decoder
- High performance decoder approaches constrained capacity
- Supports QPSK rates 1/4, 1/2 and 3/4
- 8PSK flexible code rate support including 2/3, 3/4, 5/6 and 8/9
- Supports 16QAM rate 3/4
- No external RAM support required
- Reed-Solomon decoder; t=10
Complies with DVB/DIRECTV®/Digicipher IITM FEC decoder
MPEG-2 or DIRECTV® output interface with output clock PLL
On-chip microcontroller for acquisition and tracking
On-chip BERT for BER testing
Integrated DiSEqCTM (v2.0) transmitter and receiver
128-pin PQFP
3.3V I/O and analog operation
1.8V digital operation
theoretical limits
ADVANCED MODULATION SATELLITE RECEIVER
L-band
F E A T U R E S
Advanced Modulation Satellite Receiver Set-Top Box
SatelliteTuner
BCM3440
®
Advanced Modulation
BCM4500
Satellite Receiver
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BCM4500
Highly integrated solution provides universal frontend for
advanced modulation satellite systems and legacy QPSK
systems in a single package.
High-performance turbo code FEC enables 50% throughput
increase over existing satellite channels within current link
budgets within a single transponder.
Advanced design architecture requires no external RAM for
turbo FEC.
Advanced modulation receiver maintains robust performance
during low SNR operation.
Full variable rate operation from 256-kilobaud to 30-
megabaud provides multiple operating points for optimal
system deployment.
Integrated microcontroller controls receiver operations
including configuration, acquisition and performance
monitoring.
Host interface operates via high-level application program
interface (API) to reduce host software development time and
to simplify system integration.
MPEG-2 or DIRECTV® output interface with PLL-generated
data clock provides glueless integration with BCM7020 HD
graphics and video subsystem.
Highly integrated DiSEqCTM interface includes integrated
analog components.
S U M M A R Y O F B E N E F I T S
Transport DEMUX,
Memory
Display Engine
HDTV MPEG-2
Audio/ Video
Decoder and
BCM7020
Host CPU
Conditional
Access
HD Video
Audio
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BCM4500 Summary of contents
Page 1
... BCM7020 HD graphics and video subsystem. • Highly integrated DiSEqCTM interface includes integrated analog components. Conditional Memory BCM7020 HDTV MPEG-2 BCM4500 Transport DEMUX, Advanced Modulation Audio/ Video Satellite Receiver Decoder and Display Engine Host CPU Access ...
Page 2
... RA_Q AGC_CTRL DISEQC DiSEqC 2.0 The BCM4500 brings a new level of performance to the satellite television industry with the introduction of an integrated advanced modulation receiver and turbo FEC decoder. This breakthrough design provides 50% more throughput in the same satellite bandwidth at standard QPSK operating points while simultaneously improving BER performance beyond existing levels ...