Manual

Chapter 2 Functional Description VM62(A) / VM42(A) User’s Manual

2.6.9 Reset Sources

Reset Source Identification

Push button No

SYSRES* VME No

Watchdog WDG bit on-board (Board Control/Status Register)

Power monitor (4.65V) Inside the 68EN360

2.7 Front Panel Functions

Figure 2.7.0.1: LED Port and Button Location

Watchdog LED

Yellow

RST AB

General Purpose

Green

CPU HALT or RESET

Red

RESET Switch ABORT Switch

2.7.1 RESET Button

A RESET button is fitted to the front panel to avoid false operation. The RESET button triggers the on-board system reset

generator, as well as the VME if jumper J2 is set.

2.7.2 ABORT Button

Together with the RESET button, an ABORT button is also fitted to the front panel. The ABORT button generates a level

7 IRQ (non-maskable interrupt) which is used for debugging purposes. In this case, bit 1 of the Board Control/Status

2.7.3 LED Port

The front panel LED port consists of three LEDs with the following functions:

Red LED CPU in HALT or RESET status

Yellow LED Watchdog timer running status

Green LED General purpose, set via board control/status register

The green LED is free to be used by the customer. It is set by the software during startup when the 68EN360 is initialized.