|Dynamic partial reconfiguration on FPGA|
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Since 80’s the FPGA market growing rapidly with varied of applications in different industries. FPGA manufactures keep updating their FPGAs with cutting edge technologies. In the recent days there is new concept evolving in FPGA industry so called Dynamic partial reconfiguration.
1.1. What is dynamic partial reconfiguration?
Dynamic Partial Reconfiguration provides a way to modify the implemented logic in FPGA when the device is on.More clearly DPR allows reconfiguring selected areas of a FPGA when other parts of FPGA still working. DPR is not supported on all FPGAs. For example in Xilinx Spartan 3, Virtex II, Virtex II Pro, and Virtex 4 are only supported.
2. Dynamic Partial Reconfiguration
In this chapter we are going to discuss more detail about Dynamic Partial Reconfiguration and it is terminology. The DPR discussion on this chapter is based on Virtex Pro II. Although it is little difficult to implement DPR there are many prominent advantages in it. Let’s discuss the terms which are used in DPR design flow
2.1. Dynamic Part
The dynamic parts (dynamic modules, dmodules, d_modules, etc.) are independent parts of the input design that need not be active during the whole application runtime. They share common areas (slots) inside a target device; this is based on the assumption that they are not required to run at the same time in parallel.
They are loaded to and unloaded from a target device as requested by the system scheduler. Usually they reside as a bit stream in a memory outside the FPGA. There some cases they also can be stored in the memory available inside the FPGA.
2.2. Static Part