ZL38002 datasheet, PDF - EEWORLD Datasheet

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ZL38002: DescriptionSPECIALTY TELECOM CIRCUIT, PBGA81; CategoryTopical application Wireless rf/communication; File Size224KB，7 Pages; ManufacturerZarlink Semiconductor (Microsemi); Websitehttp://www.zarlink.com/

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ZL38002 Overview

SPECIALTY TELECOM CIRCUIT, PBGA81

ZL38002 Parametric

Parameter Name	Attribute value
Number of functions	1
Number of terminals	81
Maximum operating temperature	85 Cel
Minimum operating temperature	-40 Cel
Processing package description	10 X 10 MM, 1 MM PITCH, CBGA-81
state	ACTIVE
packaging shape	SQUARE
Package Size	GRID ARRAY, LOW PROFILE
surface mount	Yes
Terminal form	BALL
Terminal spacing	1 mm
terminal coating	TIN LEAD
Terminal location	BOTTOM
Packaging Materials	PLASTIC/EPOXY
Temperature level	INDUSTRIAL
Communication type	TELECOM CIRCUIT

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ZL38003

AEC with Noise Reduction & Codecs for

Digital Hands-Free Communication

Data Sheet

A full Design Manual is available to qualified

customers. To register, please send an email to

VoiceProcessing@Zarlink.com.

May 2006

Ordering Information

ZL38003GMG 81 Ball CBGA Trays, Bake & Drypack

ZL38003GMG2 81 Ball CBGA** Trays, Bake & Drypack

**Pb Free Tin/Silver/Copper

-40°C to +85°C

Features

•

Handles up to -6 dB acoustic echo return loss

127 ms acoustic echo canceller

Provides up to 12 dB of Noise Reduction

Operate in two modes, Dual Analog mode and

single Analog mode (other port is digital PCM)

PCM Data Formats in single Port mode- 16-bit

Linear, companded ITU-T A-law or U-law

Advanced NLP design - full duplex speech with

no switched loss on audio paths

Tracks changing echo environment quickly

Adaptation algorithm converges even during

Double-Talk

Designed for performance in high background

noise environments

Provides protection against narrow-band signal

divergence

•

Howling prevention eliminates uncontrolled

oscillation in high loop gain conditions

AGC on speaker path

Transparent data transfer and mute options

Boot loadable for future factory software upgrades

Serial micro-controller interface

Two 16 bit linear ACD and DAC that meet ITU-T

G.711/712 recommendations

Four Audio TX/RX Interfaces

Differential Microphone Inputs

Programmable Bias Voltage Output for Electret

microphones

Microphone Presence Detection, Microphone

Mute

SCLK

CS_CODEC

CS_AEC

DATA1

DATA2

FPi

C4i

Rin

EAR

Serial

Microport

Interface

G.712

Codec

Rout/Sout

AEC

Sin/Rin

Crosspoint

Audio Interface

G.712

Codec

EAR

MIC

Audio Interface

MIC

BIAS

MICDET

PCM

Timing

EAR

Audio Interface

MIC

BIAS

MICDET

Sout

MCLK

RESETB

AUXTONE

Audio Interface

EAR/SPEAKER

MIC

BIAS

Figure 1 - Block Diagram

Zarlink Semiconductor Inc.

Zarlink, ZL and the Zarlink Semiconductor logo are trademarks of Zarlink Semiconductor Inc.

ZL38003

2.1

•

Data Sheet

In addition to the echo cancellers, the following functions are supported:

12 dB of noise reduction

User gain control provided for speaker path (-24 dB to +21 dB in 3 dB steps)

Gain pads at the Sin and Sout ports plus one at the input of adaptive filter (XRAM)

Control of adaptive filter convergence speed during periods of double-talk, far end single-talk and near-end

echo path changes

Control of Non-Linear Processor thresholds for suppression of residual non-linear echo

Howling detector to identify when instability is starting to occur and to take action to prevent oscillation

Narrow-Band Detector for preventing adaptive filter divergence caused by narrow-band signals

Programmable high pass filters at Rin and Sin for removal of DC components in PCM channels

Limiters that introduce controlled saturation levels

Serial controller interface compatible with Motorola, National and Intel micro controllers

PCM encoder/decoder compatible with m/A-Law ITU-T G.711, m/A-Law Sign-Mag or linear 2’s complement

coding

Automatic gain control on the receive speaker path

Idle channel noise suppression

3.0

Dual Codec Description

The CODEC Dual Codec provides complete audio to PCM interfaces including filtering and optional data

companding as required by the ITU-T G.711 & G.712 recommendations. Programmable gain allows adjustment for

a wide range of transducer sensitivities - two microphone amplifiers and four ear piece amplifiers are provided to

allow connection to a handset, headset, auxiliary channel and microphone/speaker. A cross-point circuit allows

either codec to be connected to any of the four audio interfaces. Programmable voltage sources are available for

electret biasing on the Microphone channels.

PCM voice data is passed via a serial interface which operates in ST-BUS or GCI mode. ST-BUS mode allows

the Codecs to be allocated to any of the 32 available channels. Control and programming of the Codecs is carried

out over a flexible serial micro-controller interface.

Zarlink Semiconductor Inc.

ZL38002 Related Products

	ZL38002	ZL38003GMG	ZL38003GMG2	ZL38003_06
Description	SPECIALTY TELECOM CIRCUIT, PBGA81	SPECIALTY TELECOM CIRCUIT, PBGA81	SPECIALTY TELECOM CIRCUIT, PBGA81	SPECIALTY TELECOM CIRCUIT, PBGA81
Number of functions	1	1	1	1
Number of terminals	81	81	81	81
Maximum operating temperature	85 Cel	85 °C	85 °C	85 Cel
Minimum operating temperature	-40 Cel	-40 °C	-40 °C	-40 Cel
surface mount	Yes	YES	YES	Yes
Terminal form	BALL	BALL	BALL	BALL
Terminal location	BOTTOM	BOTTOM	BOTTOM	BOTTOM
Temperature level	INDUSTRIAL	INDUSTRIAL	INDUSTRIAL	INDUSTRIAL

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