PRODUCT
Brief
BCM6315
Microcontroller
POTS
Splitter 10Base-T To
RJ45
BCM6315
Analog
Front End
(AFE) HDLC
Framer
•Operates on telephone grade and CAT 1–5 twisted
pair cable
•Coexists with POTS
•HPNA- compatible spectral plans available
•Suitable for high-speed data transport through MDU
riser cable
•15 times greater reach than Ethernet
•Suitable for both DSLAM and remote units
•Small size and low power enables high port densities
•Simple spectrum control via register programming
BCM6315 V-thernet™ TRANSCEIVER
SUMMARY OF BENEFITS
The Broadcom® BCM6315 is a single-chip V-thernet™
transceiver optimized for low-cost Ethernet transport on
telephone grade wire.
•Supports most popular bit rates, including symmetric
10 and 13 Mbps
•Supports asymmetric up to 3 Mbps upstream and 52
Mbps downstream for typical VoD application
•Sub- 1-watt power consumption
•Programmable QAM constellations
•On-chip A/D and D/A converters
•Adjustable upstream and downstream center frequencies
•On-chip RAM interleaving
•Reed-Solomon FEC
•Packet scrambling
•Enhanced adaptive decision feedback equalizer
•Bit/byte synchronous interfaces
•Single 3.3V supply operation
•JTAG test interface
•Small 100-pin PQFP package
BCM6315 FEATURES
Microcontroller
POTS
Splitter
HDLC
Framer
Ethernet
Switch BCM6315
Analog
Front End
(AFE)
Remote CPE Block Diagram
DSLAM Block Diagram
BCM6315 OVERVIEW
The BCM6315 is a single-chip V-thernet™ transceiver design
based on many years experience of QAM technology and LAN
products. It is designed for low-cost, long-reach Ethernet
applications employing telephone-grade wiring. The BCM6315
offers switch, DSLAM and CPE vendors an unmatched
capability for the provision of high-speed data transmission
services such as Internet access and LAN extensions in MDU,
MTU, hospitality and campus environments.
The BCM6315 is easily configured to support many popular data
rates such as symmetric 10 and 13 Mbps. It also offers spectral
plans with asymmetric data rates up to 3 Mbps upstream and 52
Mbps downstream. Either plan can be configured to be spectrally
compatible with HomePNA. The chip’s FDD (Frequency
Division Duplex) scheme makes it an ideal solution to overcome
performance limitations due to crosstalk in the MDU riser wire
bundle. With its small footprint, the BCM6315 is ideal for use in
NIC, PC card, CPE modem switch and DSLAM designs.
Automatic link initialization software is available with the
BCM96315 V-thernet™ reference design package, supporting
symmetric and asymmetric profiles. The software has been
ported to the reference design and is also available in source code
format. The BCM6315 includes an equalizer, FEC, interleaver,
Mod, Demod, Packet Format Logic, A/D and D/A.
TRANSMITTER
RECEIVER
x
sin x D/A
A/D
Packet
Format
Logic
Packet
Format
Logic
Nyquist
Filter
Nyquist
Filter
Acquisition/Tracking
Loops
PLL / Clock
Generation
JTAG
M-Bus / SPI
Interface
Nyquist
Filter
Interpolation
Filter
Interpolation
Filter
Programmable
Rate
I/Q
Mod
Programmable
Rate
I/Q
Mod
Nyquist
Filter
Reed-
Solomon
FEC
Encoder/
Interleaver
Reed-
Solomon
FEC
Decoder/
De-Interleaver
Adaptive
Decision-
Feedback
Equalizer
Interleave
RAM
Interleave
RAM
For more information please contact us at:
Phone: 949-450-8700, FAX: 949-450-8710
Email: info@broadcom.com
Visit our web site at: www.broadcom.com
© 2000 BROADCOM CORPORATION
6315.PB00-R-9.14.00
Broadcom®and the pulse logo are registered trade marks of Broadcom Corporation and/or its
subsidiaries in the United States and certain other countries.
BROADCOM CORPORATION
16215 Alton Parkway, P.O. Box 57013
Ir vine, California 92619-7013
