BCM3138 datasheet(1/2 Pages) BOARDCOM

Il numero della parte	BCM3138

Spiegazioni elettronici	DUAL UNIVERSAL ADVANCED TDMA PHY-LAYER BURST RECEIVER

PDF	2 Pages

Scroll/Zoom	100%

Produttore elettronici	BOARDCOM [Broadcom Corporation.]

Homepage	http://www.broadcom.com

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BCM3138

®

DUAL UNIVERSAL ADVANCED TDMA PHY-LAYER BURST RECEIVER

• 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

• I

2C 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

FE A T UR E S

SU M M A RY O F BEN E FI TS

BCM3138

Dual Adv. TDMA

Receiver

BCM3138

Routing/

Classification

Engine

Ethernet

System

CPU

Memory

BCM3212

Advanced

CMTS MAC

Downstream

SDRAM

(PHS,

output

queues)

BCM3034

Advanced QAM

Modulator

LPF

PA

WAN

44 MHz IF

Cable Modem Termination System (CMTS) Block Diagram

Codice articolo simile - BCM3138

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BCM3138 Scheda tecnica(PDF) 1 Page - Broadcom Corporation.

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