Copyright © 2013 Future Technology Devices International Limited

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FT231X USB TO FULL HANDSHAKE UART IC

Datasheet

Version 1.2

Document No.: FT_000565 Clearance No.:

FTDI# 261

Configuration Memory Area (writable)

This area stores the configuration data for the device, including the data which is returned to the host in

the configuration descriptors (e.g. the VID, PID and string descriptions) and also values which set the

hardware configuration (the signal assigned to each CBUS pin for example).

These values can have a significant effect on the behaviour of the device. Steps must be taken to ensure

that these locations are not written to un-intentionally by an application which is intended to access only

the user area.

This area is included in a checksum which covers configuration areas of the memory, and so changing

any value can also cause this checksum to fail.

Configuration Memory Area (non-writable)

This is a reserved area and the application should not write to this area of memory. Any attempt to write

these locations will fail.