Circuit device and electronic equipment

Abstract

The invention provides a circuit device and electronic equipment, belongs to the technical field of network equipment, and solves the technical problem that a controller command response receiving error or a data transmission error exists when an SD controller is configured with a new related register in the prior art. A circuit device comprises a state judgment circuit, a write-in circuit and a hardware logic circuit. The state judgment circuit comprises a data state judgment circuit and a command state judgment circuit; the write-in circuit comprises a data write-in circuit and a command write-in circuit; the first input end of the data state judgment circuit is connected with the data line enabling end of the hardware logic circuit, and the second input end of the data state judgment circuit is connected with the bus enabling end; a first input end of the command state judgment circuit is connected with a command line enabling end of the hardware logic circuit, and a second input end of the command state judgment circuit is connected with a bus enabling end; and the output end of the data state judgment circuit is connected with the enabling end of the data writing circuit.

Description

technical field [0001] The invention relates to the technical field of network equipment, in particular to a circuit device and electronic equipment. Background technique [0002] SD (Secure Digital) card is a new generation memory device based on semiconductor flash memory. It has the characteristics of small size, high memory capacity, fast data transmission rate, low cost, flexible movement and high security. It is currently more and more widely used in PCs, digital cameras, digital video cameras, mobile phones and other products. [0003] The SD protocol is divided into a host controller protocol and a physical layer protocol. The host controller protocol defines a standard register set and various transaction processes, and the physical layer protocol defines various commands, responses, frame formats, timing, and electrical characteristics. In a typical SD controller, the driver is responsible for configuring registers and controlling the transaction process, and the ...

AI Technical Summary

Problems solved by technology

[0004] For the command transaction process, according to the protocol, before configuring new command-related registers, the driver must first read the controller status register and determine whether the controller-related lines are being occupied, because the driver reads the controller-related registers through the system bus , if the data transmission on the bus is wrong or the judgment of the driver execution program is wrong, the driver may update the command-related registers while the relevant line is still occupied, which may cause the controller command response reception error or data transmission error

[0005] Therefore, in the prior art, when the SD controller configures new related registers, there is a problem of controller command response receiving error or data transmission error

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