LED display system design based on USB interface

Author: From: Time: 2019-10-08

The LED display is a display device composed of a plurality of light emitting diode arrays. It adopts low-voltage scanning drive, has the advantages of low power consumption, long service life, low cost, high brightness, large viewing angle, long viewing distance, and many varieties of specifications. It is widely used in many public places for tips, explanations and advertisements. Wait.

This design includes both hardware and software. The hardware includes the drive and control of the LED display. The driving part is responsible for providing a suitable driving current to the designated LED lighting device according to the row and column strobe signal; the control part adopts a microprocessor CY7C68013A integrated with USB2.0 to realize USB communication and control of the row and column shift register system. The software includes firmware, drivers and application software written in the Keil C51 environment. The firmware program controls the hardware to perform the corresponding functions; the driver provides a software interface to the hardware device connected to the computer; the application software processes the graphic information and communicates with the USB device.
The USB interface of this design adopts the integrated USB2.0 CMP microprocessor CY7C68013A, which has the advantages of integrated USB2.0 transceiver, intelligent SIE, enhanced 8051 microcontroller and programmable peripheral interface, the data transmission rate reaches 56MByte / s The USB 1.1 and USB 2.0 protocols can be handled in hardware, reducing development time, ensuring USB compatibility, and improving hardware integration and reliability.
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