Logic IP core for expanding parallel interface

Abstract

The invention provides a logic IP (Internet Protocol) core for expanding a parallel interface, which is characterized in that a 32-bit command address shift-in register, a 16-bit data shift-out register and a 16-bit data shift-in register are instantiated in logic; a chip selection signal SPICS and a data output signal SPIMOSI of an SPI interface of the processor are connected to a command and address shift-in register of a write-in logic and a read logic and a data shift-out register of the write-in logic, and a data input signal SPIMISO of the SPI interface is connected to a data shift-in register of the read logic. Wherein the command address shift-in register, the data shift-out register and the data shift-in register combine read-write commands, addresses and data according to agreed protocol frames. According to the invention, the problem that the domestic Feiteng processor cannot be directly connected with the Local Bus interface equipment and the interface logic IP based on the Local Bus is solved, and the installation and use of the mature domestic Local Bus interface equipment and the interface logic IP are realized.

Description

technical field [0001] The invention relates to the technical field of embedded systems, in particular to a logical IP core for extending parallel interfaces. Background technique [0002] The core processing and computing platform is the data computing center and service center of the aircraft mission system, providing highly reliable, high-safety real-time computing services and high-performance data processing services for the mission system. Among them, the domestic high-performance embedded processor is the core of the equipment. With the trend of 100% self-controllable airborne equipment and high-performance requirements, the domestic high-performance embedded processor FT-2000 / 4 of Tianjin Feiteng Company has become the core Processor of choice for computing platforms. [0003] Tianjin Feiteng's FT-2000 / 4 adopts 16nm processing technology, built-in four 64-bit processor cores FTC663, the main frequency can reach 2.2GIPS, supports single / double-precision hard floating...

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