bcm3140 Broadcom Corp., bcm3140 Datasheet

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bcm3140

Manufacturer Part Number
bcm3140
Description
Bcm3140 - Dual Universal Docsis /eurodocsis 2.0 Burst Receiver
Manufacturer
Broadcom Corp.
Datasheet

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DUAL UNIVERSAL ADVANCED TDMA/SCDMA PHY-LAYER BURST RECEIVER
The BCM3140 is a universal headend advanced TDMA and
SCDMA physical layer QPSK/QAM burst receiver.
DOCSIS
compliant
Programmable demodulation including BPSK, QPSK, 8, 16,
32, 64, 128, and 256 QAM formats
Variable symbol rates from 160 Kbaud to 5.12 Mbaud
providing 320 Kbps to 40 Mbps operation
Powerful Reed-Solomon FEC decoder with byte deinterleave
options for impulse/burst noise mitigation
Burst acquisition as fast as 16 preamble symbols
On-board 12-bit analog-to-digital converters for each channel
Direct sampling option for DOCSIS via 12-bit digital input
operating at 160 MHz with LVDS or TTL level interface
options
Powerful on-board equalizer provides ingress and adjacent
channel overlap protection
Integrated Fast Fourier Transform (FFT) processor with
variable FFT sizes and programmable window options
B r o a dc o m s e r i a l c o nt r o l ( B SC ) o r S PI - c o m pa ti b le
microcontroller interface
JTAG test interface
208-pin PQFP package
Operates over industrial temperature range (–40°C to +85°C)
®
2.0-based, IEEE 802.14, DAVIC, and DVB
F E A T U R E S
Cable Modem Termination System (CMTS) Block Diagram
®
44-MHz IF
PA
LPF
BCM3140
Advanced QAM
BCM3040
Modulator
BCM3140
Dual Adv. TDMA/
SCDMA Receiver
BCM3140
DOCSIS ® 2.0
CMTS MAC
BCM3214
BCM3140
Downstream
SDRAM
queues)
output
(PHS,
Ethernet
Presents a high-performance, integrated solution for
upstream demodulation in cable over data, video, and
telephony applications
Two independent burst receivers per package enable high-
density equipment designs, reducing equipment board space
requirements
Based on DOCSIS 2.0 standards for use in cable modem
termination systems (CMTS)
Seamless integration with BCM3214 advanced CMTS
DOCSIS 2.0 media access controller (MAC)
Applies to digital CATV reverse-channel receiver
High bps/Hz modulation enables advanced digital services
over narrow RF channels
Includes flexible analog front end options
Use of on-board ADCs minimizes external components
Direct sampling option via external 12-bit ADC minimizes RF
components
On-board equalizer enables operation of digital services
under challenging plant conditions
On-chip FFT enables spectrum analysis and management of
the entire upstream channel
Small footprint enables high-density equipment
Deploys advanced functions in harsh environments
Distributed CMTS in hybrid fiber coaxial fiber node
S U M M A R Y O F B E N E F I T S
Classification
Memory
Routing/
System
Engine
CPU

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bcm3140 Summary of contents

Page 1

... DUAL UNIVERSAL ADVANCED TDMA/SCDMA PHY-LAYER BURST RECEIVER • The BCM3140 is a universal headend advanced TDMA and SCDMA physical layer QPSK/QAM burst receiver. ® • DOCSIS 2.0-based, IEEE 802.14, DAVIC, and DVB compliant • Programmable demodulation including BPSK, QPSK, 8, 16, 32, 64, 128, and 256 QAM formats • ...

Page 2

... The BCM3140 is a highly integrated, mixed-signal, and cost-effective device providing a worldwide solution for burst receiver applications. The dual receiver design of the BCM3140 is packaged in a 208-pin PQFP, enabling a significant increase in upstream channel density for headend-based CMTS equipment. The BCM3140, combined with the ...

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