LPC2210FBD144 データシートの表示（PDF） - Philips Electronics

部品番号

コンポーネント説明

メーカー

LPC2210FBD144

16/32-bit ARM microcontrollers; flashless with 64 kB, with 10-bit ADC and external memory interface

Philips Electronics 

Philips Semiconductors

LPC2210/2220

16/32-bit ARM microcontrollers with external memory interface

6.21.2 Embedded trace

Since the LPC2210/2220 has significant amounts of on-chip memory, it is not possible to

determine how the processor core is operating simply by observing the external pins. The

Embedded Trace Macrocell (ETM) provides real-time trace capability for deeply

embedded processor cores. It outputs information about processor execution to the trace

port.

The ETM is connected directly to the ARM core and not to the main AMBA system bus. It

compresses the trace information and exports it through a narrow trace port. An external

trace port analyzer must capture the trace information under software debugger control.

Instruction trace (or PC trace) shows the flow of execution of the processor and provides a

list of all the instructions that were executed. Instruction trace is significantly compressed

by only broadcasting branch addresses as well as a set of status signals that indicate the

pipeline status on a cycle by cycle basis. Trace information generation can be controlled

by selecting the trigger resource. Trigger resources include address comparators,

counters and sequencers. Since trace information is compressed the software debugger

requires a static image of the code being executed. Self-modifying code cannot be traced

because of this restriction.

6.21.3 RealMonitor

RealMonitor is a configurable software module, developed by ARM Inc., which enables

real time debug. It is a lightweight debug monitor that runs in the background while users

debug their foreground application. It communicates with the host using the Debug

Communications Channel (DCC), which is present in the EmbeddedICE logic. The

LPC2210/2220 contains a specific configuration of RealMonitor software programmed into

the on-chip memory.

9397 750 14061

Product data sheet

Rev. 02— 30 May 2005

© Koninklijke Philips Electronics N.V. 2005. All rights reserved.

30 of 49

Share Link: