FX3 Slave FIFO Dedicated Flags | Cypress Semiconductor
FX3 Slave FIFO Dedicated Flags
My understanding to dedicated flags that they are showing status of certain thread all the time regardless the current interface drivers, is it true?
I need to use asynchronous slave FIFO interface with 2-bit address and i will assign a flag for every thread, I'll have 2 input threads and 2 output threads so my expectation is to have the flags showing the status of every thread as follow:
Input threads flags showing the status full/not-full
Output threads flags showing the status empty/not-empty
I saved asynchronous FIFO example as editable project and added the 2 additional flags and configured them as dedicated flags for every thread. The objectives are:
1- I have one control in thread and one control out thread (in from PC, out to PC)
2- I have one data in thread and one data out thread
3- Control in thread has the highest priority as I should serve control transactions sent from PC all the time
4- Dedicating a flag to control in thread should allow me to detict control transactions and i will end any current transaction to execute control transaction
5- Data is streamed from/to internal FPGA FIFOs using in/out data threads.
6- As i am dedicating flags to threads, I shouldn't poll for threads flags as i can have status instantinously regardless the current thread accessed.
7- For examble if internal FPGA FIFO has a packet, I can decide if this packet ready to send by checking out thread flag in the same clock cycle.
8- I understand the latency in updating threads flags after every piece of data pumped in or out threads.
Can any experinced programmer confirm my specs, please?