====Microcontroller-based application===

The following pictures shows conceptual block diagram of microcontroller-based application.

Microcontroller integrates USB host controller with PHY that interfaces DUL D+/D- differential pair. STAT1#, STAT2# and WARN# signals are monitored by microntroller software. Microcontroller is also able to drive SET_WP# to enable read-only mode. EXT_WP# is connected to an optional watchdog timer than, when triggers, inhibits any write operation on NAND flash, no matter what instructions microcontroller is executing. LCC_RESET# signal is driver by an optional voltage monitor. Last but not least, both primary (VIN) and secondary (VIN_AUX) power inputs are used:

* VIN is connected to main power supply (3.3V) that is used to power microcontroller too