What are the main elements of the USB connector design brief

USB, full name Universal Serial Bus (Universal Serial Bus), it is at the end of 1994 by Compaq, IBM, Microsoft and many other companies jointly developed, USB interface has undergone six years of development, now USB has developed to version 2.0. USB2.0 protocol supports all existing USB devices, both the USB1.1 device into the USB1.1 PC interface, and electrically compatible with the USB1.1 connection cable. 1. USB1.1 device into the USB1.1 PC interface, and is electrically compatible with the USB1.1 connection line. 1.USB bus features: high data transfer rate; data transfer can be; simultaneously hooked up to multiple USB devices; USB interface can be powered for the device; support for hot plugging. 2.USB interface structure and typical applications: USB bus data transfer mode has control transmission, Device selection: USB2.0 devices: Cypress FX2 series; high-speed ADC: TI, LT, AD's high-speed (40MSPS ~ 80MSPS) 8-bit ADC series; high-precision ADC: TI, LT, AD's medium and high-speed (2MSPS ~ 40MSPS) 12/14-bit ADC series; high-speed DAC: TI, LT, AD's medium and high-speed (2MSPS ~ 40MSPS) 12/14-bit ADC series; high-speed DAC: TI, LT, AD's medium and high-speed (2MSPS ~ 40MSPS) 12/14-bit ADC series. ADC series; high-speed DAC: AD, LT company's high (40MSPS ~ 80MSPS) 8-bit DAC series; high-precision DAC: AD, LT company's medium and high-speed (20MSPS ~ 80MSPS) 12/14-bit DAC series. 4. EX-USB FX2 main features: EZ-USB FX2 chip includes an 8051 processor, a Serial Interface Engine (SIE), a USB transceiver, 8.5KB on-chip RAM, 4KB FIFO memory, and a general-purpose programmable interface (GPIF). 5. High-speed 8-bit DAC; SRAM using 128K × 8 high-speed SRAM; with 16-channel digital input and 16-channel digital output, can also be configured as a 32-channel digital output or 32-channel digital input; Prepared an introduction to the USB2.0 device document, so that users are familiar with the Cypress company USB devices a variety of features.6. Summary: USB2.0 development system is A more general data acquisition and analysis system, can be used as a high-performance portable (mainly for mobile systems) data acquisition card, can also be used as a high-performance ADC, DAC device evaluation boards, at the same time, can be used as a high-performance portable virtual instrument, due to the use of the USB2.0 interface to overcome the previous use of the parallel port or the USB1.1 interface portable virtual instrument is not enough real-time weaknesses. Weaknesses.

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