Cross-device data transfer method and device

Abstract

The application relates to the technical field of data transmission, and discloses a cross-device data transmission method and device. In the cross-device data transmission, the working frequency of a first device performing a sending operation is higher than the highest working frequency of a second device, and the data interface bit width used by the first device for sending is smaller than the data interface bit width of the second device. The method is applied to the first device and comprises the following steps: dividing original data into at least two sub-data segments with equal bit widths; configuring a first linear feedback shift register with the same number of sub-data segments to form a first driving chain; wherein the initial state of each first linear feedback shift register in the first driving chain except the first stage is determined by the parallel data output by the adjacent previous-stage first linear feedback shift register in the current main clock cycle; performing a scrambling operation on the corresponding sub-data segment based on each first linear feedback shift register to obtain a scrambled sub-data segment, and sending the scrambled sub-data segment to the second device.

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