ABB PU515A 3BSE032401R1 real-time accelerator exchange for PCI bus
Brand ABB Color Standard Application Industrial height 324mm rated current 360mA
Protection Level IP45 Suitable for motor power 166KW Application Site Power Industry Material Code GJR2391500R1220 Power industry HIEE401782R0001 Part No. PU515A 3BSE032401R1
Applicable pipe 2 Whether imported is weighing 2.88 kg can be sold nationwide
ABB PU515A 3BSE032401R1 real-time accelerator exchange for PCI bus
PU515A 3BSE032401R1 The basic structure of its implementation of combinatorial logic cannot be completed by a fixed and not gate like ASIC, but can only adopt a structure that is easy to configure repeatedly. The lookup table can meet this requirement very well. At present, the mainstream FPGA adopts the lookup table structure based on SRAM process, and some military and aerospace FPGA adopts Flash or fuse and anti-fuse process lookup table structure. By burning files to change the contents of the lookup table, the FPGA can be reconfigured.
According to the basic knowledge of digital circuits, it can be known that for an N-input logical operation, whether it is an and or non-operation or an xOR operation, there can only be 2n results at most. Therefore, if the corresponding result is stored in a memory unit in advance, it is equivalent to realizing the function of the non-gate circuit. The principle of FPGA is the same, it burns a file to configure the contents of the lookup table, so as to achieve different logic functions in the same circuit.
Look-Up Table (look-up Table) is short for LUT, LUT is essentially a RAM. Currently, FPgas use 4-input LUTs, so each LUT can be regarded as a RAM with a 4-bit address line. When the user describes a logic circuit through the schematic or HDL language, PLD/FPGA development software will automatically calculate all the possible results of the logic circuit, and the truth table (that is, the result) is written to RAM in advance, so that each input signal for logical operation is equivalent to input an address to look up the table, find out the corresponding content of the address, and then output.
ABB PU515A 3BSE032401R1 real-time accelerator exchange for PCI bus
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