Field-programmable gate array (fpga) for using configuration shift chain to implement multi-bitstream function

A field-programmable gate array (FPGA) for using a configuration shift chain to implement a multi-bitstream function, comprising a bitstream control circuit, a multi-bitstream configuration shift chain and a configurable module, wherein

• the multi-bitstream configuration shift chain comprises a plurality of multi-bitstream storage configuration bits, and the plurality of multi-bitstream storage configuration bits are sequentially cascaded through a shift write-in terminal and a shift write-out terminal;
• each multi-bitstream storage configuration bit of the plurality of multi-bitstream storage configuration bits comprises a shift register, an output latch and an input multiplexer;
• an output terminal of the input multiplexer is connected to an input terminal of the shift register, and an output terminal of the shift register is connected to an input terminal of the output latch and the shift write-out terminal of the multi-bitstream storage configuration bit;
• an output terminal of the output latch is connected to a configuration output terminal of the multi-bitstream storage configuration bit, and the configuration output terminal is configured to be connected to a configurable module corresponding to the configuration output terminal;
• an input terminal of the input multiplexer is connected to the shift write-in terminal of the multi-bitstream storage configuration bit and the output terminal of the output latch;
• and
• the bitstream control circuit respectively writes at least two configuration bitstreams into each multi-bitstream storage configuration bit through the multi-bitstream configuration shift chain, the bitstream control circuit respectively latches the at least two configuration bitstreams into the shift register and the output latch by controlling working states of devices in each multi-bitstream storage configuration bit, and then the multi-bitstream configuration shift chain outputs one configuration bitstream of the at least two configuration bitstreams to the configurable module from the configuration output terminal through each multi-bitstream storage configuration bit, wherein the configurable module implements a logic function corresponding to the one configuration bitstream outputted by the multi-bitstream configuration shift chain, and logic functions corresponding to the at least two configuration bitstreams are different.