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參數資料
| 型號： | TECO3264 |
| 廠商： | Lineage Power |
| 英文描述： | 32-Channel Echo Canceller(32通道回波清除器) |
| 中文描述： | 32通道回聲消除器（32通道回波清除器） |
| 文件頁數： | 1/128頁 |
| 文件大小： | 2328K |
| 代理商： | TECO3264 |
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Data Sheet
August 1999
TECO3264 32-Channel Echo Canceller
Features
Overall Device
I
Dual-convergence voiceband echo canceller (EC).
I
32 independent and individually controlled echo
canceller channels.
I
Stable performance across virtually all network
hybrid conditions.
I
Multiple-channel processing modes:
— Echo cancelling ON/OFF.
— μ-law to A-law and A-law to μ-law conversion.
— 64-clear.
I
Tail-end delay up to 64 ms.
I
Flexible integrated nonlinear processor.
I
Automatic echo path change detection.
I
PCM interface supporting μ-law, A-law, and linear
formats.
I
Two independent tone disablers.
I
Two-band tone detection.
I
Multiple-configuration options for tone disabling:
— 2100 Hz.
— 2100 Hz with phase reversal only.
— 2010 VPA.
— Dual band.
— None.
I
Integrated data storage in on-chip SRAM.
I
Integrated PLL for high-speed operations.
I
High-speed microprocessor interface configurable
to operate with most commercial microprocessors.
I
Built-in self-test and boundary scan.
I
IEEE*1149.1 boundary scan (JTAG).
I
ITU-T G.165, G.168 compliance.
I
Highly provisionable and highly observable.
I
Selectable 3.3 V or 5.0 V tolerant inputs.
I
0 °C to 85 °C temperature range.
I
Typical power dissipation: 700 mW—900 mW.
I
160-pin, plastic, metric quad flat pack with heat
spreader (MQFPH) package.
* IEEE is a registered trademark of The Institute of Electrical and
Electronics Engineers, Inc.
Applications
I
Digital terrestrial communication networks
I
Digital wireless communications networks
I
Digital personal communication networks
I
Voiceband telephony
— Voice calls
— Low-speed modem calls
— Voice over Internet
— Packetized voice (e.g., frame relay, ATM)
I
Centralized applications
— Local exchange (LEC) office
— Interexchange (IEC) office
— Mobile telephone switching office (MTSO)
— Base-station controllers
— Packetized voice equipment
Description
The TECO3264 32-channel echo canceller (EC)
device is a 3.3 V, CMOS, very large-scale integration
(VLSI) component offering 32 independent channels
of echo cancellation. Packaged in a 160-pin, plastic,
metric quad flat pack with heat speader (MQFPH)
and handling up to 64 ms of tail-end delay, this
device combines high performance, high channel
density, low power dissipation, high flexibility, excel-
lent maintenance capability, and low cost into a sin-
gle package.
The TECO3264 32-channel echo canceller provides
echo cancellation for both T1 and E1 systems. The
device operates from a single 3.3 V supply and
requires only an external 8.192 MHz clock and 8 kHz
frame sync.
Built-in self-test logic affords easy device verification
while integrated boundary-scan capability reduces
board verification time and cost.
A high-speed microprocessor interface and full user
provisionability on device pins provide maximum flex-
ibility.
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