Datasheet > BCM3214

BCM3214

更新时间： 2024-01-07 07:36:53

品牌	Logo	应用领域
其他 - ETC		/
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中文翻译

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技术参数
数据手册

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BCM3214 技术参数

生命周期：	Active	包装说明：	,
Reach Compliance Code：	compliant	风险等级：	5.22
Base Number Matches：	1

BCM3214 数据手册

P ROD^BU^CC^{M 3}T^{2 1 4}

Brie f

B C M3 2 1 4 DO C S IS 2 . 0 ADVAN C E D C MT S MAC

B C M 3 2 1 4 F E A T U R E S

S U M M A R Y O F B E N E F I T S

Performs DOCSIS^TM2.0 MAC layer functions,

including:

• Fragment reassembly and deconcatenation

• Logical channels

Hardware support for MAC-layer per-packet

functions including fragmentation, concatenation, and

payload header suppression offloads system CPU,

giving higher overall system performance.

•

• Payload header suppression and expansion

• 56-bit DES encryption and decryption

• Generation and checking of HCS and CRC

• MPEG encapsulation of downstream traffic

• Timestamp and SYNC message generation

Extraction of bandwidth requests and DOCSIS MAC

management messages allows software to access these

messages without examining data packets.

•

Class-based queuing allows traffic prioritization:

• High, medium, and low priority downstream queues

• High priority, low priority, request, and MAC management

upstream queues

Supports one downstream and up to six upstream

channels simultaneously

• Many other downstream-to-upstream ratios can be achieved by

connecting multiple BCM3214s via the seamless MAP

master/slave interface

•

Support for carrier class redundancy via timestamp

synchronization across multiple BCM3214 devices.

•

Supports high packet rates for maximum utilization of

available cable plant bandwidth.

Processes up to 400,000 packets per second in the

aggregate over all upstream and downstream channels

•

Out-of-band (OOB) generator for messaging to

BCM3352-based cable modems.

Direct interface to:

• BCM3040 QAMLink^®DOCSIS^TM2.0 Advanced QAM

modulator (providing downstream data rates up to 100 Mbps)

• BCM3140 QAMLink^®dual-channel DOCSIS 2.0 burst receiver

(providing upstream data rates up to 40 Mbps per upstream

channel)

Can be remoted from external routing/classification

engine for distributed CMTS (mini fiber node)

applications.

SPI Master Port Controls register interface to

BCM3040 and BCM3140 devices.

•

Packet port provides a high-throughput data interface

to other network equipment via the standard IEEE

802.3z GMII Ethernet interface

•

Packaged in an 841-pin, thermally-enhanced plastic

ball grid array.

PCI interface to external host CPU supports either 32-

bit or 64-bit operation at either 33 MHz or 66 MHz

•

Operates over industrial temperature range (–40 to

+85 degrees C) PCI bus.

PROPANE^TMpacket acceleration and Smart

Spectrum^TMtechnologies for increased upstream

Typ ic a l Ap p lic a t io n Blo c k Dia g ra m

BCM3140

Dual Adv. TDMA

Receiver

Upstream

BCM3140

SDRAM

(PHS,

(keys and

output

queues)

BCM3140

reassembly)

Ethernet

Routing/

Classification

Engine

WAN

BCM3 2 1 4

Advanced CMTS MAC

System

CPU

Memory

Downstream

SDRAM

BCM3034

Downstream

Modulator

(PHS,

output

queues)

中文翻译

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与BCM3214相关器件

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BCM3225F2SF-75032-CT1-P	TAI-TECH	Wire Wound Type Balun	获取价格
BCM3225F3SF	TAI-TECH	Wire Wound Type Balun	获取价格
BCM3225F3SF-75011-CT1-P	TAI-TECH	Wire Wound Type Balun	获取价格
BCM3250	BOARDCOM	ADVANCED 3D SET-TOP BOX DEVELOPMENT PLATFORM	获取价格
BCM3252	BOARDCOM	DUAL-CHANNEL FRONT-END DOCSIS 2.0 STB IC WITH CHANNEL BONDING	获取价格
BCM3252KPBG	BOARDCOM	DUAL-CHANNEL FRONT-END DOCSIS 2.0 STB IC WITH CHANNEL BONDING	获取价格

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