ETC BCM93345I

BCM93345i
PRODUCT
Brief
DOCSIS/EuroDOCSIS INTERNAL PCI CABLE MODEM
B C M 9 3 3 4 5 i
F E AT U R E S
BCM93345i represents the latest high• The
performance, lowest cost internal PCI DOCSIS/
•
•
•
•
EuroDOCSIS cable modem design.
The BCM93345i uses the BCM3415 Digital Cable
Tuner to provide a low-cost RF interface that supports
both DOCSIS and EuroDOCSIS with minimal BOM
changes.
100% software compatible with the BCM93345
External DOCSIS/EuroDOCSIS Reference Design.
The BCM93345i includes a complete software package,
including:
• Certifiable DOCSIS/EuroDOCSIS code
• Complete source code for easy modification
• Advanced QAMLink®‚ RF analysis software
• 100% code compatibility with external BCM93345
software
The BCM93345i includes a complete documentation
package, including:
• Schematics and Gerber files
• Bill of materials (BOM)
• Data sheets, application notes and user manual
• Software source code
• Applications support contact information
S U M M A R Y
O F
B E N E F I T S
• Reduced BOM improves assembly and results in
lowest overall system cost for DOCSIS/EuroDOCSIS
1.0/1.1 cable modems.
• Maximum use of BCM3415 minimizes BOM changes
for conversion between DOCSIS and EuroDOCSIS.
• Software compatibility with BCM93345 eliminates
separate code loads and minimizes development and
support costs.
• Advanced QAMLink modulator/demodulator
technology provides superior performance in noisy
plant environments.
• Provides Propane support for both
DOCSIS/EuroDOCSIS-based packet acceleration.
• Significantly reduces time to market with complete
production-ready design.
BCM93345i Internal PCI DOCSIS/EuroDOCSIS Cable Modem with CMOS Tuner
B C M 9 3 3 4 5 i
SDRAM
Diplexer
BCM3415
CMOS
Tuner
SAW
O V E R V I E W
FLASH
BCM3345
MII
High-Performance
Single-Chip
DOCSIS/EuroDOCSIS 1.0/1.1
Cable Modem
PCIEthernet
Bridge
Broadcom’s BCM93345i QAMLink Cable Modem Reference
Design is a complete implementation of a certifiable, low-cost
internal DOCSIS/EuroDOCSIS cable modem. The BCM93345i
design is based on the high-performance BCM3345 QAMLink
Single-Chip Cable Modem and BCM3415 Digital Cable Tuner.
The BCM93345i is 100 percent software-compatible with the
BCM93345. Duplicate software loads reduce software
development effort and promote certification. The BCM93345i
is delivered with certifiable DOCSIS/ EuroDOCSIS software.
The BCM93345i receives the downstream signal via a
DOCSIS/EuroDOCSIS diplexer. The modulated QAM signal is
then downconverted via the BCM3415 Digital Tuner. This signal
is then directly sampled via the ADC of the BCM3345. The
BCM3345 physical layer processing acquires the signal and
demodulates the information for further processing. The data is
output in a digital MPEG format for processing by the
DOCSIS/EuroDOCSIS 1.0/1.1 MAC of the BCM3345. All
DOCSIS/EuroDOCSIS management messages are processed by
the BCM3345 hardware based on programmed variables
established by the cable modem application software. User data
is passed along to the Ethernet MII to the PCI 2.2 bridge chip and
to the PC. User data from the PC is likewise processed for
forwarding to the CMTS based on the rules established by the
MAC management messaging. After data is processed for
upstream communications, it is modulated to the appropriate rate
and directly converted to the required frequency. The signal then
passes through the on-chip upstream amplifier and output
directly to the diplexer and onto the cable plant.
• User manual
The documentation package for BCM3345i includes:
• BCM3345 Data Sheet
• Hardware schematics
• Bill of materials
• Gerber files for the PC board
• Current object code
• Source code
• Application notes
The BCM93345i Reference Design uses Broadcom’s highperformance, single-chip BCM3345 cable modem. This costeffective design allows Broadcom’s customers to minimize their
time to market with a production-quality, internal PCI
DOCSIS/EuroDOCSIS modem.
Ordering information:
BCM93345i
DOCSIS version
BCM93345i-E
EuroDOCSIS version
Broadcom®, the pulse logo®, QAMLink® and Connecting EverythingTM are trademarks of
Broadcom Corporation and/or its subsidiaries in the United States and certain other countries.
All other trademarks are the property of their respective owners.
BROADCOM CORPORATION
16215 Alton Parkway, P.O. Box 57013
Irvine, California 92619-7013
© 2002 by BROADCOM CORPORATION. All rights reserved.
93345i-PB02-R-4.21.02
Phone: 949-450-8700
FAX: 949-450-8710
Email: [email protected]
Web: www.broadcom.com