Epson ARM720T Manuel D’Utilisation

The major blocks of the ARM720T processor are:

ARM CPU core

This has hardware support for debug.

EmbeddedICE-RT macrocell 

A set of registers and comparators that you use to generate debug 

exceptions (such as breakpoints). This unit is described in 

 TAP controller 

Controls the action of the scan chains using a JTAG serial 

interface. For more details, see 

These blocks are shown in Figure 9-2.

Figure 9-2  ARM720T processor block diagram

ARM720T

processor

System control

processor

ARM720T

EmbeddedICE-RT

Scan chain 2

Scan chain 15

ARM720T TAP controller

(also provides scan chain 0

control signals)

S

c

an

c

hain

1