There are three common interface modes for high-speed data transmission between DSP and FPGA: EMIF, HPI and McBSP. With the EMIF interface, FPGA (Field Programmable Logic Gate Array) is used to design the interface circuit of the FIFO to achieve high-speed interconnection.
The original xilinx website has a live applicaTIon note, which should be read well.
Interested friends can look at xapp753.pdf
Because I haven't personally practiced the specific content, I will attach a block diagram first, please discuss it together.
The current type DAC switches the constant current source to the resistor network. The constant current source has a large internal resistance, which is equivalent to an open circuit. Therefore, together with the electronic switch, the impact on its conversion accuracy is relatively small. The saturated ECL switch circuit enables this DAC to achieve high-speed conversion and high conversion accuracy.
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