Text version of the page

RESETN pin Reset Internal Reset Figure 10: External Reset

IEEE802.15.4 / ZigBee Wireless MicrocontrollersR - 34237 6.3 Software Reset

A system reset can be triggered at any time by calling the Software Reset function, vAHI_SwReset() from the peripheral library. This function can be executed within a users application, upon detection of a system failure for example. The RESETN line can be driven low by the JN5121 to provide a reset to other devices in the system (e.g. external sensors). The reset output feature can be enabled or disabled for the software generated reset using the function vAHI_DriveResetOut() within the peripheral library (the default state is disabled). 14 JN-DS-JN5121 v1.8 © Jennic 2007 Preliminary The pin is an input for an external reset, an output during the power-on reset and may optionally be an output during a software reset. No devices should drive the RESETN pin high.