Study on System Verification of USB2.0 Interface Protocol Control Chip Hardware Design

USB 2.0 has become a kind of mainstream interface technology and USB 2.0 IP core system has wide application foreground in all kinds of instrumentations and devices. Universal Serial Bus 2.0 system consists of host control chip and equipment interface control chip, i.e. peripheral devices chip. The traditional USB developing is only to develop USB peripheral devices. Peripheral device chips consist of USB2.0 transceiver macrocell interface (UTMI) circuits and interface protocol control circuits. On developing USB2.0 equipment interface control chip IP core, some hardware codes of designed peripheral devices chip need be validated, which can be completed by self-designed UTMI codes. But this simulation validating process will become very complex because self-designed UTMI codes are not always correct. In addition, this kind of simulation validation system also needs a host. Combining with actual project, this paper presents a set of detailed methods to design a validation system for simulating all kind of signal of USB2.0 interface protocol circuits, proposed methods were involved with configuring circumstance, designing test modules, processing signal transmission, developing additional tasks, introducing presented actual verification method for some main signal packages and correlative verification output results, and etc. Simulation verification results show these methods are valid, so can offer the reference for development of USB2.0 system in all kinds of electronics instrumentations.