MC145572EVK Просмотр технического описания (PDF) - Motorola => Freescale

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MC145572EVK

ISDN U-Interface Transceiver Evaluation Kit

Motorola => Freescale 

Freescale Semiconductor, Inc.

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INTRODUCTION

1.1 ORGANIZATION OF DATA SHEET

This document is composed of three major sections. Section 1 introduces the MC145572EVK U-Interface

Transceiver Evaluation Kit with a brief description of the evaluation board and a list of key features. Also

included at the end of Section 1 is ÒGetting Started,Ó a short tutorial to help begin working with the

MC145572EVK. Section 2 is a brief description of the hardware design. Section 3 contains the command

set descriptions and examples.

IMPORTANT NOTE

This UserÕs Manual Ñ MC145572EVK U-Interface Transceiver Evaluation Kit Revision 2

Ñ corresponds with MC145572EVK Printed Circuit Board Revision F with Þrmware version

2.01. If a discrepancy exists between this document and the MC145572 data sheet, the

MC145572 data sheet should take precedence.

1.2 INTRODUCTION

The MC145572EVK U-Interface Transceiver Evaluation Kit provides Motorola ISDN customers a

convenient and efÞcient vehicle for evaluation of the MC145572 ISDN U-Interface Transceiver. The

approach taken to demonstrate the MC145572 U-Interface Transceiver is to provide the user with a fully

functional NT1 (Network Termination Type 1) connected to an LT (Line Termination). An NT1 provides

transparent 2B+D data transfer between the U- and S/T-Interfaces. In addition, it provides for network

initiated maintenance procedures. The MC145572EVK does not terminate any ISDN call control

messages. It also does not terminate any maintenance messages received over the S/T-Interface.

The MC145572EVK U-Interface Transceiver Evaluation Kit can be used as an NT1 card or as an LT card.

The left half of the card is the NT1, while the right half of the card is the LT. Alternatively, it can be thought

of as having both ends of the two-wire U-Interface, extending from the customer premise (NT1) to the

switch line card (LT) on a single, stand-alone evaluation board. Figure 1-1 shows a typical ISDN application

using the MC145572 and the MC145574.

The kit provides the ability to interactively manipulate status registers in the MC145572 U-Interface

Transceiver as well as in the MC145574 S/T-Interface Transceiver with the aid of an external terminal. A

unique combination of hardware and software features allows for stand-alone or terminal activation of the

U-Interface and as such provide an excellent platform for NT1 and LT hardware/software development.

The NT1 function can be disabled by putting DIP switch S4-10 in the NT1 DIS position.

MC145572EVK

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For More Information On This Product,

Go to: www.freescale.com

MOTOROLA

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