BCM3300
PRODUCT
Brief
®
BCM3300 QAMLink® SINGLE-CHIP DOCSIS CABLE MODEM
B C M 3 3 0 0
F E AT U R E S
S U M M A R Y
• Integrated QAMLink Receiver
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10-bit A/D converter with input AGC amplifier
Variable symbol rate 256 QAM receiver
Digital demodulator, Nyquist filters, tracking loops and
32-tap adaptive decision feedback equalizer
ITU-T J.83 Annex A/B/C compatible FEC
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Programmable FEC encoder
Pre-equalizer filter
QPSK/16 QAM burst modulator
10-bit D/A converter with output power control
• Integrated Upstream Transmitter
integrated circuit
• Reduces overall system cost
• Simplifies system, board and software design
• Reduces power consumption
• Single crystal design with direct IF sampling
• Complete Media Access Control (MAC) function for
MCNS-compliant cable modem
• Ensures interoperability in consumer-grade products.
• Baseline privacy encryption and decryption
• DOCSIS version 1.0 and 1.1 compliant
• Supports for fragmentation and concatenation
• Supports enhanced Quality of Service (QoS) for Voice
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B E N E F I T S
• Fully-integrated, DOCSIS-compliant PHY/ MAC
• Support for up to 16 SIDs and 16 56-bit DES
• Integrated DOCSIS Media Access Controller (MAC)
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O F
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encryption keys with initialization vectors
40-bit DES version available for export
• Hardware processing, enabling real-time
over IP (VoIP) applications
Support for 16 destination address and 256 multicast
address filters
Four simultaneous upstream SIDS multiplexed to 16
• Termination of MPEG-2 transmission convergence
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• CPU Interfaces
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Processor
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• Motorola MC68360, MPC850 PowerPC
• IDT79R3081 MIPS, BCM3310 Communications
• 3.3V Operation
• 256-pin BGA package
sublayer
Generation/verification of CRC and HCS
Extraction and processing of time stamps and system
timing
MAP message handling and upstream bandwidth
requests
MAC layer fragmentation in hardware
Extensive address filtering
DOCSIS-Compliant External Cable Modem
DRAM
5-42 MHz
FLASH
LPF
PA
Serial 1,2
BCM3310
Control
BCM3300
Diplex
Filter
SRAM
54-860 MHz
RF
Tuner
SAW
Single-Chip
MCNS/DOCSIS
Cable Modem
USB Ethernet
BCM5201
10/100BT
XCVR
USB
XCVR
RJ-45
USB