公开(公告)号：WO1997022937A1

公开(公告)日：1997-06-26

申请号：PCT/US1996020667

申请日：1996-12-19

Applicant: MOTOROLA INC.

Inventor： MOTOROLA INC. ,  SOMMERS, Daniel, Ray ,  LEE, Jin, Woo ,  MATHIS, James, Earl

IPC: G06F13/00

CPC classification number: G06F12/1433 ,  Y02D10/13

Abstract: A multi-circuit processor device, such as a personal digital assistant, having a processor (11). The processor (11) has a memory select output (19 or 14). A program memory (12) with a memory select input (18 or 14) is coupled to the memory select output of the processor for selecting the program memory for addressing by the processor. A peripheral circuit (20) such as a radio modem has a data memory (40) for storing secure data. A connection (16) couples the processor and the peripheral circuit for communicating data between the processor and the data memory. A gate element (17) is associated with the connection between the processor and the peripheral circuit. The gate element is coupled to the memory select output of the processor for opening the gate element, thus allowing for security of access to the critical data in the data memory (40).

Abstract translation: 一种具有处理器（11）的诸如个人数字助理的多电路处理器设备。 处理器（11）具有存储器选择输出（19或14）。 具有存储器选择输入（18或14）的程序存储器（12）耦合到处理器的存储器选择输出，用于选择用于由处理器寻址的程序存储器。 诸如无线电调制解调器的外围电路（20）具有用于存储安全数据的数据存储器（40）。 连接（16）耦合处理器和外围电路，用于在处理器和数据存储器之间传送数据。 门元件（17）与处理器和外围电路之间的连接相关联。 栅极元件耦合到处理器的存储器选择输出以打开栅极元件，从而允许访问数据存储器（40）中的关键数据的安全性。