Introduction

1.4Test points

The core module provides two ground and five signal test points as an aid to debug.

These are illustrated in Figure 1-4.

TP6

TP7

Voltage

TP1

 

regulator

 

 

TP3

TP5

TP4

 

 

 

TP2

 

 

 

Figure 1-4 Test points

 

The functions of the test points are summarized in Table 1-2.

 

 

 

Table 1-2 Test point functions

 

 

 

 

 

Test point

Name

Function

 

 

 

 

 

TP1

GND

Ground

 

 

 

 

 

TP2

GND

Ground

 

 

 

 

 

TP3

FCLKOUT

Clock output from the ARM940T microprocessor core

 

 

 

 

 

TP4

LBCLK

Local memory bus clock

 

 

 

 

 

TP5

Core clock

Clock supplied to the ARM940T microprocessor core

 

 

 

 

 

TP6

VDD940T

Output from voltage regulator

 

 

 

 

 

TP7

ADJ

ADJ pin of voltage regulator

 

 

 

 

 

 

 

 

1-10

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ARM DUI 0125A