readme.txt

cypress fx2 firmware代码示例

The purpose of this code is to demonstrate how the cpu can "dynamic OUT ...automaticity" in EZUSB
FX2 GPIF applications.

What does that mean?
By setting REVCTL.1=1 (DYN_OUT) the cpu can dynamically switch between "AUTO" 
and "MANUAL" mode, perhaps to edit an OUT packet, without having to do a FIFORESET.

NOTE: - The cpu can't source an OUT packet in "AUTO"...
      - In AUTO mode the cpu is out of the data path...
      - The core doesn't notify the cpu of zero length OUT packets (in Either mode)
      - Typ. this is handled "out-of-band" over endp0 or endp1

Chapter 10 of the EZUSB FX2 TRM explains the General Programmable Interface (GPIF)
Please see "readme.txt" file for more details