MS140131KTPP - Motorola / Freescale Semiconductor

This document contains information on a product under development. Motorola

reserves the right to change or discontinue this product without notice.

Semiconductor Products Sector

MOTOROLA Order Number: MS140131KTPP/D

Rev. 1, 8/11/00

SCALE 1:1

ORDERING INFORMATION

MC1420232 44-Pin TQFP Package

MC1430132 28-Pin SOIC Package

FU SUFFIX

TQFP PACKAGE

CASE 824

DW SUFFIX

SOIC PACKAGE

CASE 751F

Product Preview

SH-POTS Chipset

MC1420232 CODSP

MC1430132 SHLIC

The MS140131 KT chipset provides al l the funct ions nec essary to

connect analog telephone sets or other analog terminals (telefax,

answering machines, modems, etc.) into digital communication

systems. It provides an economical solution for the traditional

BORS(C)HT [Bat te ry, Overvolt age , Ri ngi ng, Supervis ion, (C ode c),

Hybrid, Test] functions found in central-office exchanges, but is

optimized for short-range communication [e.g., up to 500 m with

four R ENs (R inger Equ ivalence N umber ) attached]. Vi rtually all

system-dependent parameters can be set under software control,

giving a unprecedente d flexibilit y to the syst em integrator, as well a s

optimizing the system cost. The digital interface to the SH-POTS

(Short Haul, Plain Old Telephone System) chipset uses the industry-

standard GCI interface. The system architecture has been designed

to offer the most cos t-effective solution for shor t haul syste ms, yet

offers the full flexibility required to meet worldwide analog

telephony standards. The MS140131KT chipset is also suitable for

Q.552 applications.

The MS140131 KT chi pset comprises thr ee d evi ces (see t he Blo ck Dia gram): a pai r of hi gh-v olt age device s, t he

Short Haul Line Interface Circuit (SHLIC) which provides the signal and power interface to the analog lines (one

per line) and a low-voltage CMOS, DSP-based dual codec/control device (CODSP) which provides all signal

processing and control functions for up to two lines.

Key Features

• Digital ly Programmed T ransmiss ion and Signalli ng Characterist ics Meet Worldwide Specifi cation Require ments

• Integrated Ringing: Sine or Trapezoid

• Metering Injection

• Battery Reversal

• Tone Generators for Signalling and Testing

• Minimal External Components

• Codec and SLIC Functions for Two Lines

• Low-Cost POTS Interfa ce for Sh ort R ange

• Standard GCI Inter face

Applications

• Advanced ISDN NT (NTplus)

• Analog/Digital PABX

• Cable Telephone Systems (Set-Top Box)

• Remote Telephone Access Syst ems

— Fiber to the Curb

— Radio in the Loop

• Internet Telephones

MS140131KT

PIN ASSIGNMENTS

PWRS

SPIDO

SPICK

SPICS

SPDI

PU[0]

RNG[0]

BR[0]

TST[0]

TEST

Zout

AD2

AD1

AD0

GCIM

TST[1]

BR[1]

RNG[1]

PU[1]

SCLK

PLLCK

CPLL

3435363738394041424344

2221201918171615141312

PIN 1

INDICATOR

Rx[0]

Tx[0]

DCC[0]

DCO[0]

DCC[1]

DCO[1]

VSSA

VAG

VDD3A

Tx[1]

Rx[1]

JTDO

JTCK

JTMS

JTDI

JTRS

VDD3D

Dout

Din

DCL

FSC

VSSD

SSB

DCO

DCI

DCC

DCLF1

DCLF2

VDD3

VSSB

BAT

BATS

BATR

RNG

TST

VAG

VDD5A

VSSA

MC1420232

44-LEAD TQFP

MC1430132

28-LEAD SOIC

BLOCK DIAGRAM

GCI SERIAL BUS

SH-POTS

MC1420232

MC1430132 MC1430132

TIP TIP

RING RING

VDD | –5 V

POWE R SUPPLY

VBAT | 22 V

Vring | –68 V

0 V

APPLICATION

DEPENDENT

PROTECTION

APPLICATION

DEPENDENT

PROTECTION

MS140131KT

OPERATING CONDITIONS

Operating ran ges define the limits for functio nal operation and pa rametric charact eristics of the d evice.

FUNCTIONAL CHARACTERISTICS OF THE SH-POTS SYSTEM

For reference, Figure 1 shows the typical voltages on both wires during various stages of operation.

ON-HOOK CONDITIONS

When a line is not in use (on-hook), the designer may select either the speech battery or the ringing battery as the

supply to the line drivers. In this mode, most of the internal circuits are put into a low-power operating mode to

minimize supply cur ren ts. The A and B wir e outputs ar e ef fective ly con nected to the suppl y vol t age, th us a ppl yin g

this vol tage to t he line. The out put is cur rent-li mited in this mode, thus protecting a gainst sh ort circ uits and l imiting

any inrush current when a set goes off-hook. If the SHLIC detects a current in excess of a (programmable) limit,

the off-hook condition will be detected (an on-chip debouncer with selectable delay avoids accidental hookswitch

detection), an d the circuit will be p ut int o active spe ech mo de.

RINGING INJECTION

The SH-POTS ch ipset is cap able of directly injec ting a ringing signal of up t o 50 Vrms (sine wave) witho ut the

need for addi tional ex ternal compon ents. The technique of “ba lanced rin ging” is used, whic h allows this large

voltage swing to remain within the technology limits of the SHLIC device. The SH-POTS chipset allows the user

to pro gram a DC of fset duri ng ring ing as well as a reduc ed ampl itude ringin g signal , shou ld the app licat ion re qui re

this. Ringing waveform, frequency, amplitude, and cadence, as well as ring-trip thresholds, are controlled by the

CODSP device and are all programmable. Ringing cadence can be automatic, with independently programmable

ring and pause times, or ringing can be controlled directly via the GCI bus. In automatic cadence mode, ringing

bursts on both channels can optionally be interleaved if simultaneously active, to avoid peaks in current from the

ringing battery supply.

SOURCE IMPEDANCE (ZCO)

The central-office impedance, ZCO, is synthesized using digital signal processing techniques. This renders it very

stable , and, moreov er, progra mmab le by the us er by means of co eff ic ien ts whi ch are loade d vi a the GCI. The ZCO

setting is common for both lines. Both real and complex ZCOs can be programmed to address the local

requirements of specifications world-wide, and cover the range.

OPERATING CONDITIONS (All Voltages Referenced to VSSA = VSSB or VSS = VSSA, as Appropriate)

Symbol Parameter Limits UnitMin Typ Max

BATR Ringing Battery Voltage –72 –65 – 18 V

BATS Speech Battery Voltage –35 –32 – 18 V

DBAT Difference Between the Batteries BATR and BATS,

BATR-BATS –40 –35 0 V

VDD5A Supply Vo ltage SHLIC 4.75 5 5.5 V

Trange Ope rati ng Tem pe ratu r e Range –40 — 85 °C

VDD3D

VDD3A VDD of CODSP (3.3 V ±8%) 3.036 3.3 3.564 V

MS140131KT

BALANCE IMPEDANCE (ECHO CANCELLER)

The balance impedance (model of the line + set impedance used to separate the receive and transmit signals in the

“hybrid”) is independently programmable (though is the same for both channels). Default values offer echo return

loss of better than 20 dB, though optimization to specific line and set characteristics may yield further

improvement.

METERING INJECTION

Metering pulses of selectable frequency (12 or 16 kHz) and programmable amplitude can be injected into either

analog channel independently. The width of the injected pulse is determined by the user (“on/off mode”), or by an

internal timer (“burst mode”) which can be set by the user from 2 ms to 510 ms in steps of 2 ms. The metering

signal is always a multiple of half metering periods.

TONE GENERATION

The SH-POTS system allows the injection of user programmable tones, independently per channel, for signalling

or user test purposes. Per channel, a tone comprising two programmable (sine-wave) frequencies and

programmable amplitudes can be generated (in this way, the most common call-progress and information tones,

melody notes, or DTMF tones can be synthesized). The tone signal is added to the speech signal, or the speech

signal can also be muted during a tone burst.

GCI INTERFACE

The SH-POTS syst em uses the GCI st and ard int er fa ce to excha nge B channel dat a ( PCM coded voic e) and cont ro l

informat ion wit h the c ontrolli ng syst em. GCI data is excha nged in both directions (downstr eam, toward s the a nalog

line, and upstream, from the analog line) in 4-byte frames at a rate of 8000 frames per second (the standard PCM

sampling rate).

Figure 1. SH-POTS Line Voltages — Example

0 V

VBATS

VBATR

ON-HOOK

(SATURATION, <0.5 V)

(e.g., –24 V)

(e.g., –64 V)

(BIAS, 3 V + DROP

OF BAT SWITCH)

(BIAS, 3 V + DROP OF BAT SWITCH)

ON-HOOK ADSI RING BURST OFF-HOOK

(BIAS, 3 V)(BIAS, 3 V)

(AVG. DC = VBATR/2)

Motorola reserve s the right to mak e change s with out further no tice to any pr oducts he rein. Motorola make s no warra nty, represen tation or

guarante e regarding the suitabil ity of its products fo r any particular purpos e, nor does Motorola ass ume any liability arising out of the

applicat ion or use of any product or c ircuit, and specifica lly disclaims any and all liability, including without limitation c onsequential or

incidental damages. “Typical” parameters can and do vary in different applications and actual performance may vary over time. All operating

parameter s, including “Typica ls”, must be validate d for each cu stomer application by cus tomer ’s technical exp erts. Motorola does not

convey an y license un der its patent rights nor the rig hts of others. Motor ola products are not designed , intended, or autho rized for use as

components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other

application in which the failure of the Motorola product could create a situation where personal injury or death may occur. Should Buyer

purcha se or use Motorola products for any such un intend ed or unau thorized applicatio n, Buyer shall indemn ify and hold Motorola and its

officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable

attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use,

even if such claim alleges that Motorola was negligent regarding the design or manufacture of the part. Motorola and are registered

trademarks of Motorola, Inc. Motorola, Inc. is an Equal Opportunity/Affirmative Action Employer.

How to reach us:

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1-303-675-2140 or 1-800-441-2447

JAPAN: Motorola Japan Ltd.; SPS, Technical Information Center, 3-20-1 Minami-Azabu. Minato-ku, Tokyo 106-8573 Japan.

81-3-3440-3569

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Hong Kong. 852-26668334

TECHNICAL INFORMATION CENTER: 1-800-521-6274

HOME PAGE: http://motorola.com/semiconductors/

MS140131KTPP/D

MS140131KT

Digital DNA is a trademark of Motorola, Inc.

The General Circuit Interface (GCI) is an interface specification developed jointly by Alcatel, Italtel, GPT, and Siemens; March 1989; Issue 1.0.