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→Integration guide
==Integration guide==
This section provides useful information and resources that allow the system designer to integrate DUL module in his/her application very quickly.
===Typical scenarios===
====Microcontroller-based application===
The following pictures shows conceptual block diagram of microcontroller-based application.
[[File:Dul-uc-scenario.png|center]]
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
* VIN_AUX is connected to an optional energy storage device as described in [[#Reliability]] section.
===Mechanical information===
[[File:Dul-mech.png|thumbnail|center|Mechanical dimensions]]
===Backup power supply circuits===
Please refer to [[Backup power supply circuits (SSD modules)]].
==Qualification tests==
===Data integrity===