Motorola MC68328 Technical Information PDF herunterladen (Seite 12)

1-4

FLEX Alphanumeric Chip MC68175 Interface

Introduction

MC68175

1.5 MC68175

The FLEX one-way paging protocol is implemented in the form of the Motorola

MC68175 IC. This FLEX Alphanumeric Chip signal decoder enables developers to easily

incorporate wireless paging capabilities in a wide range of consumer products. It

simplifies FLEX Protocol implementation in end-user products by interfacing with

several off-the-shelf paging receivers and many off-the-shelf host

microcontrollers/microprocessors.

The FLEX Alphanumeric Chip MC68175 has the following primary functions:

• to process information received from a FLEX radio paging channel,

• to demodulate the audio signal,

• to select messages addressed to the paging device, and

• to communicate the message to the host MPU.

1.6 FLEX ONE-WAY STACK

Motorola FLEX One-Way Stack software runs on the host MPU and performs the

following functions:

• to initialize the FLEX Alphanumeric Chip at power-up,

• to perform the tasks of interpreting the message received from this chip in an

appropriate manner (numeric, alphanumeric, binary, etc.), and

• to provide the host software with the correct decoded message.

Frees

cale Semiconductor,

Freescale Semiconductor, Inc.

For More Information On This Product,

Go to: www.freescale.com

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Motorola MC68328 Technical Information Seite 12