MT9171APR datasheet, PDF - EEWORLD Datasheet

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MT9171APR: DescriptionDigital Transmission Interface, Basic, CMOS, PQCC28; CategoryWireless rf/communication Telecom circuit; File Size540KB，28 Pages; ManufacturerMicrosemi; Websitehttps://www.microsemi.com

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MT9171APR Overview

Digital Transmission Interface, Basic, CMOS, PQCC28

MT9171APR Parametric

Parameter Name	Attribute value
Is it lead-free?	Contains lead
Is it Rohs certified?	incompatible
Parts packaging code	LCC
Contacts	28
Reach Compliance Code	unknow
data rate	160 Mbps
ISDN access rate	BASIC
JESD-30 code	S-PQCC-J28
Number of terminals	28
Maximum operating temperature	85 °C
Minimum operating temperature	-40 °C
Minimum output high voltage	2.4 V
Maximum output low current	0.005 A
Maximum output low voltage	0.4 V
Package body material	PLASTIC/EPOXY
encapsulated code	QCCJ
Encapsulate equivalent code	LDCC28,.5SQ
Package shape	SQUARE
Package form	CHIP CARRIER
power supply	5 V
Certification status	Not Qualified
reference point	S
Nominal supply voltage	5 V
surface mount	YES
technology	CMOS
Temperature level	INDUSTRIAL
Terminal form	J BEND
Terminal pitch	1.27 mm
Terminal location	QUAD
Base Number Matches	1

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ISO

-CMOS ST-BUS FAMILY MT9171/72

Digital Subscriber Interface Circuit

Digital Network Interface Circuit

Data Sheet

Features

•

Full duplex transmission over a single twisted pair

Selectable 80 or 160 kbit/s line rate

Adaptive echo cancellation

Up to 3 km (9171) and 4 km (9172)

ISDN compatible (2B+D) data format

Transparent modem capability

Frame synchronization and clock extraction

Zarlink ST-BUS compatible

Low power (typically 50 mW), single 5 V supply

Ordering Information

MT9171/72AE

22 Pin PDIP

MT9171/72AN

24 Pin SSOP

MT9171/72AP

28 Pin PLCC

MT9171/72APR

28 Pin PLCC

MT9171/72ANR

24 Pin SSOP

MT9171/72AE1

22 Pin PDIP*

MT9171/72AP1

28 Pin PLCC*

MT9171/72AN1

24 Pin SSOP*

MT9171/72APR1 28 Pin PLCC*

MT9171/72ANR1 24 Pin SSOP*

*Pb Free Matte Tin

-40°C to +85°C

March 2006

Tubes

Tape &

Tubes

Tape &

Reel

Applications

•

Digital subscriber lines

High speed data transmission over twisted wires

Digital PABX line cards and telephone sets

80 or 160 kbit/s single chip modem

Description

The MT9171 (DSIC) and MT9172 (DNIC) are pin for

pin compatible replacements for the MT8971 and

MT8972, respectively. They are multi-function devices

capable of providing high speed, full duplex digital

transmission up to 160 kbit/s over a twisted wire pair.

They use adaptive echo-cancelling techniques and

transfer data in (2B+D) format compatible to the ISDN

basic rate. Several modes of operation allow an easy

interface to digital telecommunication networks

including use as a high speed limited distance modem

DSTi/Di

CDSTi/

CDi

Transmit

Interface

Prescrambler

Scrambler

Differentially

Encoded Biphase

Transmitter

Transmit

Filter &

Line Driver

OUT

F0/CLD

C4/TCK

F0o/RCK

MS0

MS1

MS2

RegC

Control

Transmit

Timing

Master Clock

Phase Locked

Bias

Address

Echo Canceller

Error

Signal

Echo Estimate

—

DPLL

MUX

OUT

DIS

Precan

Transmit/

Clock

Receive

Timing &

Control

Sync Detect

Status

Receive

∑

Receive

Filter

-1

OSC2

DSTo/Do

CDSTo/

CDo

Receive

Interface

De-

Prescrambler

Descrambler

Differentially

Encoded Biphase

Receiver

OSC1

Bias

Ref

Figure 1 - Functional Block Diagram

Zarlink Semiconductor Inc.

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

MT9171/72

Functional Description

Data Sheet

The MT9171/72 is a device which may be used in practically any application that requires high speed data

transmission over two wires, including smart telephone sets, workstations, data terminals and computers. The

device supports the 2B+D channel format (two 64 kbit/s B-channels and one 16 kbit/s D-channel) over two wires as

recommended by the CCITT. The line data is converted to and from the ST-BUS format on the system side of the

network to allow for easy interfacing with other components such as the S-interface device in an NT1 arrangement,

or to digital PABX components.

Smart telephone sets with data and voice capability can be easily implemented using the MT9171/72 as a line

interface. The device’s high bandwidth and long loop length capability allows its use in a wide variety of sets. This

can be extended to provide full data and voice capability to the private subscriber by the installation of equipment in

both the home and central office or remote concentration equipment. Within the subscriber equipment the

MT9171/72 would terminate the line and encode/ decode the data and voice for transmission while additional

electronics could provide interfaces for a standard telephone set and any number of data ports supporting standard

data rates for such things as computer communications and telemetry for remote meter reading. Digital

workstations with a high degree of networking capability can be designed using the DNIC for the line interface,

offering up to 160 kbit/s data transmission over existing telephone lines. The MT9171/72 could also be valuable

within existing computer networks for connecting a large number of terminals to a computer or for intercomputer

links. With the DNIC, this can be accomplished at up to 160 kbit/s at a very low cost per line for terminal to

computer links and in many cases this bandwidth would be sufficient for computer to computer links.

Figure 1 shows the block diagram of the MT9171/72. The DNIC provides a bidirectional interface between the DV

(data/voice) port and a full duplex line operating at 80 or 160 kbit/s over a single pair of twisted wires. The DNIC has

three serial ports. The DV port (DSTi/Di, DSTo/Do), the CD (control/data) port (CDSTi/CDi, CDSTo/CDo) and a line

port (L

, L

OUT

). The data on the line is made up of information from the DV and CD ports. The DNIC must combine

information received from both the DV and CD ports and put it onto the line. At the same time, the data received

from the line must be split into the various channels and directed to the proper ports. The usable data rates are 72

and 144 kbit/s as required for the basic rate interface in ISDN. Full duplex transmission is made possible through

on board adaptive echo cancellation.

The DNIC has various modes of operation which are selected through the mode select pins MS0-2. The two major

modes of operation are the MODEM (MOD) and DIGITAL NETWORK (DN) modes. MOD mode is a transparent 80

or 160 kbit/s modem. In DN mode the line carries the B and D channels formatted for the ISDN at either 80 or 160

kbit/s. In the DN mode the DV and CD ports are standard ST-BUS and in MOD mode they are transparent serial

data streams at 80 or 160 kbit/s. Other modes include: MASTER (MAS) or SLAVE (SLV) mode, where the timebase

and frame synchronization are provided externally or are extracted from the line and DUAL or SINGLE (SINGL)

port modes, where both the DV and CD ports are active or where the CD port is inactive and all information is

passed through the DV port. For a detailed description of the modes see “Operating Modes” section.

In DIGITAL NETWORK (DN) mode there are three channels transferred by the DV and CD ports. They are the B, C

and D channels. The B1 and B2 channels each have a bandwidth of 64 kbit/s and are used for carrying PCM

encoded voice or data. These channels are always transmitted and received through the DV port (Figures 3, 4, 5,

6). The C-channel, having a bandwidth of 64 kbit/s, provides a means for the system to control the DNIC and for the

DNIC to pass status information back to the system. The C-channel has a Housekeeping (HK) bit which is the only

bit of the C-channel transmitted and received on the line. The 2B+D channel bits and the HK bit are double-

buffered. The D-channel can be transmitted or received on the line with either an 8, 16 or 64 kbit/s bandwidth

depending on the DNIC’s mode of operation. Both the HK bit and the D-channel can be used for end-to-end

signalling or low speed data transfer. In DUAL port mode the C and D channels are accessed via the CD port

(Figure 7) while in SINGL port mode they are transferred through the DV port (Figures 5, 6) along with the B1 and

B2 channels.

Zarlink Semiconductor Inc.

MT9171APR Related Products

	MT9171APR	MT9172APR	MT9172ANR	MT9171ANR	MT9171AE1	MT9172AE1
Description	Digital Transmission Interface, Basic, CMOS, PQCC28	Digital Transmission Interface, Basic, CMOS, PQCC28	Digital Transmission Interface, Basic, CMOS, PDSO24	Digital Transmission Interface, Basic, CMOS, PDSO24	DATACOM, DIGITAL SLIC, PDIP22, LEAD FREE, PLASTIC, DIP-22	DATACOM, DIGITAL SLIC, PDIP22, LEAD FREE, PLASTIC, DIP-22
Is it lead-free?	Contains lead	Contains lead	Contains lead	Contains lead	Lead free	Lead free
Is it Rohs certified?	incompatible	incompatible	incompatible	incompatible	conform to	conform to
Parts packaging code	LCC	LCC	SSOP	SSOP	DIP	DIP
Contacts	28	28	24	24	22	22
Reach Compliance Code	unknow	unknow	unknow	unknow	compli	compli
data rate	160 Mbps	160 Mbps	160 Mbps	160 Mbps	160 Mbps	160 Mbps
ISDN access rate	BASIC	BASIC	BASIC	BASIC	BASIC	BASIC
JESD-30 code	S-PQCC-J28	S-PQCC-J28	R-PDSO-G24	R-PDSO-G24	R-PDIP-T22	R-PDIP-T22
Number of terminals	28	28	24	24	22	22
Maximum operating temperature	85 °C	85 °C	85 °C	85 °C	85 °C	85 °C
Minimum operating temperature	-40 °C	-40 °C	-40 °C	-40 °C	-40 °C	-40 °C
Minimum output high voltage	2.4 V	2.4 V	2.4 V	2.4 V	2.4 V	2.4 V
Maximum output low current	0.005 A	0.005 A	0.005 A	0.005 A	0.005 A	0.005 A
Maximum output low voltage	0.4 V	0.4 V	0.4 V	0.4 V	0.4 V	0.4 V
Package body material	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY
encapsulated code	QCCJ	QCCJ	SSOP	SSOP	DIP	DIP
Encapsulate equivalent code	LDCC28,.5SQ	LDCC28,.5SQ	SSOP24,.3	SSOP24,.3	DIP22,.4	DIP22,.4
Package shape	SQUARE	SQUARE	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR
Package form	CHIP CARRIER	CHIP CARRIER	SMALL OUTLINE, SHRINK PITCH	SMALL OUTLINE, SHRINK PITCH	IN-LINE	IN-LINE
power supply	5 V	5 V	5 V	5 V	5 V	5 V
Certification status	Not Qualified	Not Qualified	Not Qualified	Not Qualified	Not Qualified	Not Qualified
reference point	S	S	S	S	S	S
Nominal supply voltage	5 V	5 V	5 V	5 V	5 V	5 V
surface mount	YES	YES	YES	YES	NO	NO
technology	CMOS	CMOS	CMOS	CMOS	CMOS	CMOS
Temperature level	INDUSTRIAL	INDUSTRIAL	INDUSTRIAL	INDUSTRIAL	INDUSTRIAL	INDUSTRIAL
Terminal form	J BEND	J BEND	GULL WING	GULL WING	THROUGH-HOLE	THROUGH-HOLE
Terminal pitch	1.27 mm	1.27 mm	0.635 mm	0.635 mm	2.54 mm	2.54 mm
Terminal location	QUAD	QUAD	DUAL	DUAL	DUAL	DUAL
Base Number Matches	1	1	1	1	1	1

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