BCM3138 Datasheet, PDF (1/2 Pages) Broadcom Corporation. – DUAL UNIVERSAL ADVANCED TDMA PHY-LAYER BURST RECEIVER

BCM3138
®
DUAL UNIVERSAL ADVANCED TDMA PHY-LAYER BURST RECEIVER
FEATURES
SUMMARY OF BENEFITS
• ^{The BCM3138 is a universal headend advanced TDMA physical layer}
QPSK/QAM burst receiver
• ^{DOCSIS/EuroDOCSIS-based, IEEE 802.14, DAVIC and DVB}
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 10-bit analog-to-digital converters for each channel}
• ^{Direct sampling option for DOCSIS and EuroDOCSIS 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
• ^{I2C or SPI-compatible microcontroller interface}
• ^{JTAG test interface}
• ^{208-pin PQFP package}
• ^{Operates over industrial temperature range (-40 to +85 degrees C)}
• ^{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 floor space requirements.
• ^{Based on DOCSIS/EuroDOCSIS standards for use in Cable Modem}
Termination Systems (CMTS).
• ^{Seamless integration with BCM3212 Advanced CMTS 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
BCM3138
Dual Adv. TDMA
Receiver
BCM3138
BCM3138
BCM3212
Ethernet
Routing/
Classification
Engine
WAN
Advanced
CMTS MAC
System
CPU
44 MHz IF
PA
Downstream
SDRAM
BCM3034
(PHS,
LPF
Advanced QAM
output
Modulator
queues)
Memory
Cable Modem Termination System (CMTS) Block Diagram