Datasheet > BCM3120

BCM3120

更新时间： 2022-01-20 20:50:00

品牌	Logo	应用领域
其他 - ETC		/
页数	文件大小	规格书
2页	43K
描述

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数据手册

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BCM3120 数据手册

P ROD^BU^CC^{M 3}T^{1 2 0}

Brie f

B C M 3 1 2 0

S E T - T O P

B O X

T R A N S C E I V E R

B C M 3 1 2 0 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

Integrated QAMLink^®In-Band Receiver

Universal set-top front-end supports the ITU-T J.83

Annex A/B/C standards.

•

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 decoder

MPEG packet filter

•

Represents a complete solution for dual downstream

channels (in-band and out-of-band) and the

upstream channel.

•

Integrated analog front-end for the dual downstream

and upstream blocks reduces board complexity and

system costs.

•

Integrated QPSK Out-of-Band Receiver

100-200 MHz LO with AGC and 6-bit A/D Converter

Variable symbol rate QPSK receiver

Digital demodulator, Nyquist filters, tracking loops, and

4-tap adaptive decision feedback equalizer

DigiCipher II^®/DVB/DAVIC FEC decoder

Message packet processor and DMA interface

•

Integrated peripheral control unit supports required

set-top box peripherals without additional devices.

•

Interfaces seamlessly to Broadcom’s

BCM7020/BCM7030 set-top box decoder for a two-

chip set-top box solution.

•

Integrated Upstream Transmitter

Programmable Starvue II/DOCSIS/EuroDOCSIS/DVB/

DAVIC FEC encoder

•

Pre equalization filter

•

Up to 6MBaud variable rate QPSK/16-QAM modulator

10-bit D/A converter with output power control

interfaces

Peripheral Control Unit

Keypad, LED, IR, UART, RF and generic control

MC-68331 and SH7707 microcontroller interfaces

I²C/SPI compatible interface is available for modem

only applications

•

S e t -t o p Bo x Blo c k Dia g ra m

In-Band Channel

BCM3 1 2 0

Audio

Video

Out-of-Band Channel

Universal

Set-top

Tuner

BCM7 0 2 0 /BCM7 0 3 0

S e t -t o p Bo x De c o d e r

Upstream Channel

Transceiver

CPU

I/O

Memory

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