NXP Semiconductors LPC2917 Bedienungsanleitung PDF herunterladen

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1. Introduction

1.1 About this document

This document lists detailed information about the LPC2917/19 device. It focuses on

factual information like pinning, characteristics etc. Short descriptions are used to outline

the concept of the features and functions. More details and background on developing

applications for this device are given in the LPC2917/19 User Manual (see Ref. 1

). No

explicit references are made to the User Manual.

1.2 Intended audience

This document is written for engineers evaluating and/or developing systems, hard-

and/or software for the LPC2917/19. Some basic knowledge of ARM processors and

architecture and ARM968E-S in particular is assumed (see Ref. 2

).

2. General description

2.1 Architectural overview

The LPC2917/19 consists of:

• An ARM968E-S processor with real-time emulation support

• An AMBA multi-layer Advanced High-performance Bus (AHB) for interfacing to the

on-chip memory controllers

• Two DTL buses (a universal NXP interface) for interfacing to the interrupt controller

and the Power, Clock and Reset Control cluster (also called subsystem)

• Three VLSI Peripheral Buses (VPB - a compatible superset of ARM's AMBA

advanced peripheral bus) for connection to on-chip peripherals clustered in

subsystems.

The LPC2917/19 configures the ARM968E-S processor in little-endian byte order. All

peripherals run at their own clock frequency to optimize the total system power

consumption. The AHB2VPB bridge used in the subsystems contains a write-ahead buffer

one transaction deep. This implies that when the ARM968E-S issues a buffered write

action to a register located on the VPB side of the bridge, it continues even though the

actual write may not yet have taken place. Completion of a second write to the same

subsystem will not be executed until the first write is finished.

LPC2917/19

ARM9 microcontroller with CAN and LIN

Rev. 1.01 — 15 November 2007 Preliminary data sheet

1 2 3 4 5 6 ... 67 68

LPC2917/19 1

Inhaltsverzeichnis

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