EZ-USB (AN21xx/FX/FX1/FX2/FX2LP) 'Rule of Thumb' for an External Master Monitoring FIFO Flags

Question: What is the 'rule of thumb' for an external master when it monitors the FIFO flags to manage under-flow and over-flow conditions?

 

Answer:

"The external master shall never write to a full FIFO, and never read from any empty FIFO." Please refer Sec 8.6.2.3 (Page No. 108) of the EZ-USB Technical Reference Manual for more information on Empty and Full Flags.