Digital pin conversion device and method based on FPGA

Abstract

The invention discloses a digital pin conversion device and method based on an FPGA. The device comprises a communication interface, an encoder, a memory, a lookup table controller and a lookup tablemodule. The communication interface receives externally input pin configuration data, wherein the pin configuration data comprises pin data of the chip and pin data of a peripheral circuit. The encoder encodes the pin configuration data according to the pin configuration requirement of the peripheral circuit so as to generate a two-dimensional relationship data table in one-to-one correspondence between the encoded chip pins and the pins of the peripheral circuit. The memory stores the two-dimensional relationship data table, and the lookup table controller reads the address information and the data information in the memory so as to control the lookup table module to select the connection relationship between the pin of the chip and the pin of the peripheral circuit. According to the digital pin conversion device and method based on an FPGA, random arrangement of existing pins of the chip can be realized through random configuration of software on the existing pin resources of the chip, and the cost is reduced.

Description

technical field [0001] The invention relates to the field of chip design, in particular to an FPGA-based digital pin conversion device and method. Background technique [0002] With the expansion of the chip scale, the number of chip pins is also increasing, and the function multiplexing on the same pin becomes more and more, sometimes 7-8 functions are multiplexed on one pin, or even more . In the existing technical solution, the pins of the MCU chip are configured through registers, and the chip user selects from several functions given on a certain pin of the MCU chip according to the application requirements. Therefore, the peripheral application circuit design of the chip also becomes more complicated, and it is impossible to achieve the same pin as a certain chip, so the application circuit needs to be redesigned for the replacement of alternative chips. [0003] Based on the existing technical solutions, the pins of the chip products require the chip user to select ...

AI Technical Summary

Problems solved by technology

However, since it is impossible to understand or meet all users' needs for pin layout during chip design, users often have new needs for pins, which requires re-spinning, resulting in a serious waste of resources.

Images