Interface configurable universal series bus controller

Abstract

The invention discloses a USB controller whose interface can be configured. Including USB standard transceiver module interface control module, endpoint control logic modules, control state machine module. The interface can be configured interface control module; USB standard Interface Control Module transceiver module from the host came to receive data packets, and parsing, in the control state machine module will be under the control of data distributed to the endpoint control logic modules and interface with the microprocessor and control module FIFO ( FIFO module) communications. The invention with USB2.0 specifications, and supports up to 480 Mbps transfer rate, which provides a configurable microprocessor interface and FIFO (FIFO) interface to be the IP core in the form of easily with a variety of micro - Nuclear link controller integrated, and can easily be integrated into AMBATM, VCITM, OCPTM and other system-on-chip (SOC) system architecture.

Description

1. Technical field [0001] The invention relates to a digital integrated circuit USB equipment interface device, in particular to an interface that can be widely used in USB2.0 system equipment, and can be conveniently integrated in a system-on-chip (SOC) that requires a USB interface. Configurable USB controller. 2. Background technology [0002] USB is the abbreviation of Universal Serial Bus in English, and its Chinese meaning is "Universal Serial Bus". It is a new interface technology applied in the field of PC. As early as 1995, there were already PCs with USB ports, but due to the lack of software and hardware support, the USB ports of these PCs were all idle. After 1998, with Microsoft's built-in support module for USB interface in Windows, and the increasing number of USB devices, USB gradually entered the practical stage. [0003] The USB interface supports plug-and-play, supports data transmission between the host system and the USB peripheral device, and connect...

AI Technical Summary

Problems solved by technology

The work of the USB device controller needs to be controlled by a microcontroller. At present, the main USB device controllers on the market provide an 8-bit interface with the 8051 microcontroller to meet the requirements. The disadvantages of the existing USB device controllers are: no To adapt to the development of integrated circuit ASIC (Application Specific Integrated Circuit) and SOC, the single interface bit width cannot match a variety of microcontrollers and SOC architectures, which limits the development of USB device controllers

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