AM79C202JC datasheet, PDF - EEWORLD Datasheet

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AM79C202JC: DescriptionAdvanced Subscriber Line Interface Circuit; File Size445KB，48 Pages; ManufacturerETC

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AM79C202JC Overview

Advanced Subscriber Line Interface Circuit

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Am79213/Am79C203/031

Advanced Subscriber Line Interface Circuit (ASLIC™) Device

Advanced Subscriber Line Audio-Processing Circuit

(ASLAC™) Device

DISTINCTIVE CHARACTERISTICS

Performs all of the functions of a codec-filter

Single channel architecture

Performs Battery-feed, Ring-trip, Signaling,

Coding, Hybrid and Test (BORSCHT) functions

Single hardware design meets multiple country

requirements through software programming

Industry standard PCM interface with full-time

slot assignment

Monitor of two-wire interface voltage and current

for subscriber line diagnostics

Low idle power per line

On-hook transmission

Only battery and +5 V supplies needed

Exceeds LSSGR and CCITT central office

requirements

Off-hook and ground-key detectors with

programmable thresholds

Programmable line feed characteristics

independent of battery voltage

Built-in voice path test modes

Analog and digital hybrid balance capability

Adaptive hybrid balance capability

Linear power feed with power management and

thermal shutdown features

Abrupt and smooth polarity reversal

Power-cross detection in Ringing and Non-

ringing states

Software programmable

—

DC loop feed characteristics and current limit

Loop supervision detection thresholds

Off-hook detect debounce interval

Two-wire AC impedance

Transhybrid balance

Transmit and receive gains

Equalization

— Digital I/O pins

— A-law/µ-law selection

Linear data available on PCM ports for custom

compression and expansion

Compatible with inexpensive protection

networks. Accommodates low tolerance fuse

resistors while maintaining longitudinal balance

to Bellcore specifications.

Power/Service Denial state

Small physical size

Integrated ring trip function

Four relay drivers with built-in energy

absorption zener diodes

Synchronized ring relay operation: zero volts ac

on, zero current off

Software enabled Normal or Automatic Ring-Trip

state

On-chip 12 kHz and 16 kHz metering generation

with on and off meter pulse shaping

Supports loop-start and ground-start signaling

0°C to +70°C commercial operation guaranteed

by production testing

–40°C to +85°C temperature range operation

available

Standard microprocessor interface

Publication#

080160

Rev:

Amendment:

Issue Date:

April 2000

TABLE OF CONTENTS

Distinctive Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Linecard Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Ordering Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

ASLIC Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

ASLAC Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Connection Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

32-Pin PLCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

44-Pin PLCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Pin Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

ASLIC Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

ASLAC Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

ASLIC/ASLAC Devices Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Electrical Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Power Dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Absolute Maximum Electrical and Thermal Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

ASLIC Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

ASLAC Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Operating ranges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Environmental . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Performance Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

ASLIC Device Relay Driver Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Switching Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Microprocessor Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Switching Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Input and Output Waveforms for AC Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Master Clock Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Microprocessor Interface (Input Mode) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Microprocessor Interface (Output Mode) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

PCM Highway Timing for XE = 0 (Transmit on Negative PCLK Edge) . . . . . . . . . . . . . . . . . 36

PCM Highway Timing for XE = 1 (Transmit on Positive PCLK Edge) . . . . . . . . . . . . . . . . . 37

ASLIC/ASLAC Devices Linecard Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Programmable Filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

General Description of CSD Coefficients . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

Physical Dimension . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

PL032 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

PL044 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

Revision Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

Am79213/Am79C203/031 Data Sheet

LIST OF FIGURES

Figure 1.

Figure 2.

Figure 3.

Figure 4.

Figure 5.

Figure 6.

Figure 7.

Transmit and Receive Path Attenuation vs. Frequency . . . . . . . . . . . . . . . . . . . 26

Group Delay Distortion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

A-law Gain Linearity with Tone Input (Both Paths) . . . . . . . . . . . . . . . . . . . . . . . 28

µ-law Gain Linearity with Tone Input (Both Paths) . . . . . . . . . . . . . . . . . . . . . . . 28

Total Distortion with Tone Input (Both Paths) . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

A/A Overload Compression. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

ASLIC/ASLAC Typical Linecard Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

LIST OF TABLES

Table 1.

Table 2.

Table 3.

Table 4.

Table 5.

Table 6.

Table 7.

Table 8.

Table 9.

Table 10.

Table 11.

Power Dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

ASLIC Device DC Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

ASLIC Device Relay Driver Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

ASLIC Device Transmission Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

ASLAC Device DC Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

ASLAC Device Transmission and Signaling Specifications . . . . . . . . . . . . . . . . 22

Microprocessor Interface. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

PCM Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Master Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

User-Programmable Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

ASLIC/ASLAC Devices Linecard Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

ASLIC/ASLAC Products

AM79C202JC Related Products

	AM79C202JC	AM79212	AM79212JC	AM79C202
Description	Advanced Subscriber Line Interface Circuit	Advanced Subscriber Line Interface Circuit	Advanced Subscriber Line Interface Circuit	Advanced Subscriber Line Interface Circuit

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