bcm3142 Broadcom Corp., bcm3142 Datasheet
bcm3142
Manufacturer Part Number
bcm3142
Description
12-channel Universal Advanced Tdma/scdma Phy-layer Burst Receiver
Manufacturer
Broadcom Corp.
Datasheet
1.BCM3142.pdf
(2 pages)
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12-CHANNEL UNIVERSAL ADVANCED TDMA/SCDMA PHY-LAYER BURST RECEIVER
The BCM3142 is a universal headend advanced TDMA and SCDMA physical
layer QPSK/QAM burst receiver.
DOCSIS
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 up 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
Four onchip analog-to-digital converters and four external serial interface
options
Direct sampling for DOCSIS via digital input operating either at 164 MHz or
204 MHz to support up to 85 MHz reverse path
Powerful equalization to provide ingress, ACI and inter-symbol interference
(ISI) protection
Integrated Fast Fourier Transform (FFT) processor with variable FFT sizes and
programmable window options
Dual gigabit Ethernet ports independently configurable to use either GMII or
SerDes
Broadcom serial control (BSC) or SPI-compatible microcontroller interface
65 nanometer process and JTAG test interface with AC-JTAG support for the
GMII and external ADC SerDes
Operates over commercial temperature range (0°C to +70°C)
Supports up to four logical channels for each channel
Flexible association of RF ports and digital receiver channels using a digital
switch
Impulse noise time stamping on empty channel/idle slots
®
3.0-based, IEEE 802.14™, DAVIC, and DVB compliant
DOCSIS 3.0 Cable Modem Termination System (CMTS) Block Diagram
F E A T U R E S
®
60 Channels (each up to 5.12 Mbaud, Q256)
60 Channels (each up to 5.12 Mbaud, Q256)
DOCSIS 3.0 Upstream PHY Slice
DOCSIS 3.0 Upstream PHY Slice
12-Channel DOCSIS 3.0
12-Channel DOCSIS 3.0
BCM3142
BCM3142
Burst Receiver
Burst Receiver
BCM3142
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Presents a high-performance, integrated solution for upstream demodulation in
cable-over-data, video, and telephony applications.
12 independent burst receivers per package enable high-density equipment
designs, reducing equipment board space requirements.
Based on DOCSIS 3.0 standards for use in cable modem termination systems
(CMTS).
Seamless integration with BCM3216 advanced CMTS DOCSIS 3.0 media
access controller (MAC).
Applies to digital CATV reverse-channel receiver.
High bps/Hz modulation enables advanced digital services over narrow RF
channels.
Direct sampling using high-speed ADCs minimizes RF components.
Use of onchip ADCs minimizes external components.
Onchip equalizer enables operation of digital services under challenging plant
conditions.
Onchip FFT and impulse noise time-stamping enable spectrum analysis and
management of the entire upstream channel.
Small footprint enables high-density equipment.
DOCSIS 3.0 Upstream MAC
DOCSIS 3.0 Upstream MAC
Slice: 350,000 pkts/sec
Slice: 350,000 pkts/sec
DOCSIS 3.0 Upstream
Resequencing + MAC
DOCSIS 3.0 Upstream
Resequencing + MAC
BCM3216
BCM3216
128M x 16
128M x 16
SDRAM
INTF x 4
SDRAM
INTF x 4
DDR2
DDR2
S U M M A R Y O F B E N E F I T S
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bcm3142 Summary of contents
Page 1
... UNIVERSAL ADVANCED TDMA/SCDMA PHY-LAYER BURST RECEIVER • The BCM3142 is a universal headend advanced TDMA and SCDMA physical layer QPSK/QAM burst receiver. ® • DOCSIS 3.0-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 BCM3142 is a highly integrated, mixed-signal, and cost-effective device providing a worldwide solution for burst receiver applications. The 12-receiver design of the BCM3142 is packaged in a 31x31 FCBGA with 1mm pitch, enabling a significant increase in upstream channel density for headend-based CMTS equipment. The BCM3142, combined with the BCM3040 QAMLink Universal Modulator and the BCM3216 Advanced QAMLink CMTS DOCSIS 3 ...