FX3 Programmers Manual, Doc. # 001-64707 Rev. *C 47
FX3 Overview
logic blocks are first saved to the System RAM. Following this, the System RAM itself is forced into
low power memory retention only mode. Warm boot setting is enabled in the global configuration
block. Finally the core is powered down. When FX3 comes out of standby, the CPU goes through a
reset; the boot-loader senses the warm boot mode and restores the system to its original state after
loading back the configuration values (including the firmware resume point) from the System RAM.
Optionally, FX3 could be powered down from its Standby mode (core power down). This involves an
additional process of removing power from the VDD pins. Contents of System SRAM are lost and IO
pins go undefined. When power is re-applied to the VDD pins, FX3 will go through the normal power
on reset sequence.
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