Field programmable logical array wiring resource structure and its modeling approach thereof
A technology for programming logic and resources, applied in the direction of logic circuits using specific components, logic circuits using basic logic circuit components, etc., which can solve problems such as low resource utilization and lack of flexibility
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[0030] 1. The overall structure of wiring resources
[0031] figure 1 It is the overall structure diagram of the wiring structure FPGA of the present invention. This interconnect structure FPGA is mainly composed of logic cells (CLB), programmable interconnection, unified switch matrix (GRM) and input-output unit (IOB).
[0032] The logic unit is a functional unit that implements user logic, and it usually consists of a look-up table (LUT), flip-flops, carry chains, etc.
[0033] The switch matrix can provide the exchange of horizontal wiring channels and vertical wiring channels. It has several switch types: pass transistor, driver (buffer), bidirectional driver (bidirection buffer) and metal connection (hardconnection, for turning) . The area of the transmission tube is small, and the speed is fast when there are not many cascades. It is suitable for short-term connection, but the speed drops rapidly when there are many cascades; the driver can amplify and restore the s...
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