11.10 System Reset

Helios contains a reset controller to reset the system under defined conditions. Reset occurs when any of the following occurs.

• User causes reset with a ground contact on the Reset- input pin (connector J14 pin 2).

• Input voltage drops below 4.75V.

A system reset will also cause a reset on the ISA bus to reset any installed PC/104 modules. The ISA Reset signal is an active high pulse with a 200ms duration.