參數(shù)資料
型號(hào)： PEF2445N
英文描述： ?Multipoint Switching and Conferencing Unit - Attenuation?
中文描述： ？多點(diǎn)交換和會(huì)議股-衰減？
文件頁數(shù)： 11/73頁
文件大?。?/td> 1618K
代理商： PEF2445N
PEB 2466
PEF 2466
Overview
Hardware Reference Manual
2
2001-02-20
1
Overview
The four-channel codec filter PEB 2466 SICOFI
4-μC is built around a central DSP-core
which provides independent filter structures for all channels. Its analog I/O pins are used
to connect to external subscriber line interface circuits (SLICs). Their signals are
internally routed to the analog-to-digital and digital-to-analog converters (ADC, DAC).
The signaling pins carry line status and control information to and from the SLICs. Two
programmable clock outputs are available. The SICOFI
4-μC connects to the digital
switching and transmission system through two PCM Highways. The digitized voice
band signals are available as A-Law or μ-Law codes within selectable 8-bit time slots.
The SICOFI
4-μC modes, features, and filter characteristics are programmed through a
serial interface to a microcontroller. The access mechanism is very simple, and can be
implemented with as few as three I/O ports. The PEB 2466 is available for standard
temperature range applications (0
°
C to +70
°
C); the PEF 2466 is available for extended
temperature range applications (-40
°
C to +85
°
C).
Figure 1
SICOFI
4-μC Architecture
SLIC 1
ADC - DAC
Signaling
SLIC 2
ADC - DAC
Signaling
SLIC 3
ADC - DAC
Signaling
SLIC 4
ADC - DAC
Signaling
Highway A
Highway B
Status and Control
Registers
CRAM
PLL,
Clocking
Serial Microcontroller Interface
t/r
t/r
t/r
t/r
PEB 2466
SICOFI4-μC
Digital Filters
Channel 1
Digital Filters
Channel 2
Digital Filters
Channel 3
Digital Filters
Channel 4
DSP Core
P
2466_201
相關(guān)PDF資料
PDF描述
PEF24622 ?SOCRATES-4?
PEF2466-H A-Law/u-Law CODEC
PEF24901 ISDN LINE INTERFACE|BASIC|CMOS|QFP|64PIN|PLASTIC
PEF24901H ?Quad ISDN Echocancellation Circuit Digital Front-End for 4B3T Line Code?
PEF24902 ISDN Line Interface
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
PEF24470HV1.3 制造商:Rochester Electronics LLC 功能描述:- Bulk
PEF24471EV1.3 制造商:Lantiq 功能描述: 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Infineon Technologies AG 功能描述:
PEF24471EV1.3-G 功能描述:網(wǎng)絡(luò)控制器與處理器 IC T/E RoHS:否 制造商:Micrel 產(chǎn)品:Controller Area Network (CAN) 收發(fā)器數(shù)量: 數(shù)據(jù)速率: 電源電流（最大值）:595 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray
PEF24471E-V12 制造商:Infineon Technologies AG 功能描述:
PEF24622 制造商:未知廠家 制造商全稱:未知廠家 功能描述:?SOCRATES-4?
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