Method for arranging multipurpose master and slave USB interface

The invention discloses a method for arranging a multipurpose master-and-slave USB interface. The method is characterized by comprising steps as follows: A, a system circuit board is arranged in an MP3 player and comprises an MCU (microprogrammed control unit) with a USB control function and an MP3...

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Bibliographic Details
Main Authors FENG YONGQIANG, YUAN BO
Format Patent
LanguageEnglish
Published 10.02.2016
Subjects
CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
PHYSICS
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Summary:The invention discloses a method for arranging a multipurpose master-and-slave USB interface. The method is characterized by comprising steps as follows: A, a system circuit board is arranged in an MP3 player and comprises an MCU (microprogrammed control unit) with a USB control function and an MP3 decoding function, a FLASH, an SDRAM (synchronous dynamic random-access memory), a bus, a D/A (digital-to-analog) converting circuit and an analog amplifier circuit; B, a battery is arranged in the MP3 player and used as a power supply to supply power to the whole system; C, a headphone socket is arranged on the MP3 player to connect a headphone and the analog amplifier circuit. The interface can be connected with a microcomputer for exchanging data, downloading files and songs and executing other operation instructions of the microcomputer and can also be directly connected with other devices such as MP3 players, digital cameras, USB mobile memories and printing machine equipment for corresponding operation, so that application is more convenient.
Bibliography:Application Number: CN20141369128