Device and method for processing clock-domain-crossing asynchronous data, chip and operating method of chip

Abstract

The invention provides a device and a method for processing clock-domain-crossing asynchronous data, a chip and an operating method of the chip. The device comprises a first data sampling unit, a second data sampling unit, a logical operation unit and a clock signal synchronization unit, wherein the first data sampling unit acquires data and obtains a first data signal in a first clock domain; the second data sampling unit acquires the data and obtains a second data signal in a second clock domain; the logical operation unit receives the first data signal and the second data signal and performs logical operation; the clock signal synchronization unit samples a first clock signal in the first clock domain and / or a second clock signal in the second clock domain to obtain a first synchronous clock signal and / or a second synchronous clock signal; and at least one of the first data sampling unit and the second data sampling unit acquires the data under the first synchronous clock signal and / or the second synchronous clock signal. The method comprises the following steps of: synchronizing clock signals in other clock domains by using a reference clock signal; and sampling the data. By the invention, data synchronism can be ensured, and the processing accuracy of the data is improved.

Description

technical field [0001] The invention relates to the field of data processing, in particular to a cross-clock domain asynchronous data processing device, a data processing method of the device, a chip with the device and a working method of the chip. Background technique [0002] As a common office equipment, printers provide great convenience for modern office. Existing printers are divided into inkjet printers and laser printers. Inkjet printers use ink cartridges containing ink as consumable containers to spray ink on paper to form text or patterns that need to be printed on paper; laser printers use ink cartridges containing toner The toner cartridge is used as a consumable container to form text or patterns that need to be printed on the medium. [0003] see figure 1 , an existing color inkjet printer has a casing 11, figure 1 The inkjet printer is shown with the chassis 11 omitted. The machine core 12 of ink-jet printer is provided with in the casing 11, and is prov...

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Problems solved by technology

[0013] However, this method only uses the same clock signal to sample all data signals in the same clock domain, but there is no strict timing relationship between clock signals in different clock domains, that is, there is no strict timing relationship between clock signals in different clock domains. After the data is sampled by clock signals in different clock domains, there may still be inconsistencies in data synchronization, which affects the accuracy of data processing by the data processing device.

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