Renesas Emulator System SH7362 Manual de usuario descargar pdf (Pagina 25)

E1/E20 Emulator Setup

R20UT0398EJ0400 Rev.4.00 Page 25 of 39

May 16, 2014

2.5. Connecting System Ground

The emulator's signal ground is connected to the user system's signal ground.

In the emulator, the signal ground and frame ground are connected.

In the user system, connect the frame ground only; do not connect the signal ground to the frame ground (Figure

2.6).

If it is difficult to separate the frame ground from the signal ground in the user system, set the GND for DC power

input (AC adapter) of the host computer and the frame ground of the user system as the same potential. If the GND

potential is different between the host computer and the user system, an overcurrent will flow in the low-

impedance GND line and thin lines might be burned.

WARNING

Connecting System Ground :

Separate the frame ground from the signal ground at the user system. Failure to do so will result in

smoke, fire, or an electric shock due to the difference in ground potential.

USB

E1/E20 emulator

Logic

Power

supply

Host

computer

Signal ground

Signal

Frame ground

User system

Signal ground

Signal

Logic

Figure 2.6 Connecting System Ground

For a debugging environment where there is a GND gap between the user system and host PC, use the isolator

for the E1 emulator (R0E000010ACB10 / R0E000010ACB20

) or the isolator for the E20 emulator

(R0E000200ACB10) that are separately available from Renesas.

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Renesas Emulator System SH7362 Manual de usuario Pagina 25