ZL50234GD ETC, ZL50234GD Datasheet

no-image

ZL50234GD

Manufacturer Part Number

ZL50234GD

Description

8 Channel Voice Echo Canceller

Manufacturer

ETC

Datasheet

1.ZL50234GD.pdf (41 pages)

Current page: 1 of 41
Download datasheet (621Kb)

Features

•

•

•

•

•

•

•

•

•

•

•

•

•

Independent multiple channels of echo

cancellation; from 8 channels of 64ms to 4

channels of 128ms with the ability to mix

channels at 128ms or 64ms in any combination

Independent Power Down mode for each group of

2 channels for power management

Fully compliant to ITU-T G.165, G.168 (2000) and

(2002) specifications

Passed AT&T voice quality testing for carrier

grade echo cancellers.

Compatible to ST-BUS and GCI interfaces with

2Mb/s serial PCM data

PCM coding,

magnitude

Per channel Fax/Modem G.164 2100Hz or G.165

2100Hz phase reversal Tone Disable

Per channel echo canceller parameters control

Transparent data transfer and mute

Fast reconvergence on echo path changes

Fully programmable convergence speeds

Patented Advanced Non-Linear Processor with

high quality subjective performance

Protection against narrow band signal divergence

and instability in high echo environments

MCLK

Fsel

Rin

C4i

Sin

F0i

/A-Law ITU-T G.711 or sign

Parallel

Timing

Serial

PLL

Unit

to

V

DD1 (3.3V)

DS CS R/W A10-A0 DTA D7-D0

ECA/ECB

Group 0

Microprocessor Interface

Figure 1 - ZL50234 Device Overview

Echo Canceller Pool

ECA/ECB

Group 1

V

SS

ECA/ECB

Group 2

•

•

•

•

•

•

Applications

•

•

•

•

•

•

0 dB to -12 dB level adjusters (3 dB steps) at all

signal ports

Offset nulling of all PCM channels

10 MHz or 20 MHz master clock operation

3.3 V I/O pads and 1.8V Logic core operation with

5-Volt tolerant inputs

IEEE-1149.1 (JTAG) Test Access Port

ZL50232, ZL50233, ZL50234 and ZL50235 have

same pinouts in both LQFP and LBGA packages

Voice over IP network gateways

Voice over ATM, Frame Relay

T1/E1/J1 multichannel echo cancellation

Wireless base stations

Echo Canceller pools

DCME, satellite and multiplexer system

IRQ

8 Channel Voice Echo Canceller

V

DD2 (1.8V)

TMS

ECA/ECB

Group 3

ZL50234/GDC 208-Ball LBGA

ZL50234/QCC 100-Pin LQFP

TDI TDO TCK TRST

Test Port

Ordering Information

Note:

Refer to Figure 4

for Echo Canceller

block diagram

-40 C to +85 C

Parallel

Serial

ODE

to

Data Sheet

Rout

Sout

RESET

ZL50234

March 2003

1

Related parts for ZL50234GD

Related keywords

ZL50234GD datasheet
ZL50234GD data sheet
ZL50234GD pdf datasheet
ZL50234GD component
ZL50234GD part
ZL50234GD distributor
ZL50234GD RoHS
ZL50234GD datasheet download