AN2184 Freescale Semiconductor / Motorola, AN2184 Datasheet

Manufacturer Part Number

AN2184

Description

MCF5272 Interrupt Service Routine for the Physical Layer Interface Controller

Manufacturer

Freescale Semiconductor / Motorola

Datasheet

1.AN2184.pdf (60 pages)

Application Note

MCF5272 Interrupt Service Routine

for the Physical Layer Interface Controller

Jean Louis Dolmeta

Networking and Computing Systems Group

Part I Summary and Scope

1.1 Overview

The physical layer interface controller (PLIC) is a peripheral module of the ColdFire

to support ISDN applications such as CODECs, ISDN transceivers, and other peripherals. The PLIC

supports two modes of operation: IDL and GCI physical layer protocols. It also has four dedicated TDM

ports for connecting to external devices.

This document consists of four main parts:

The reader is strongly recommended to read the MCF5272 User’s Manual at www.mot.com/ColdFire

before going through this document. The register and bit explanations therein help the reader to better

understand the device’s internal architecture.

This document contains information on a new product under development by Motorola.

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

1. A brief description of the inter digital link (IDL) mode of operation

2. The general circuit interface (GCI) explanation

3. A description of the interrupt service routine used to handle the data transfer for both modes of

4. Some examples of ColdFire microprocessor assembly code to perform quick evaluation of the

Semiconductor Products Sector

operation

MCF5272. See Part VIII, “Appendix A.”

Freescale Semiconductor, Inc.

For More Information On This Product,

Go to: www.freescale.com

MCF5272 intended

Order Number: AN2184/D

Rev. 1.1, 10/2001