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方案采用台湾奇岩M110E芯片，外围元件少，成本低，读写速度快，性能好。FeaturesUSB *Fully compatible with USB 2.0/1.1 specification Support USB 2.0 specification for 480Mbit/sec and 12Mbit/sec operation USB Device Class Definition for Mass Storage , Bulk-Transport v1.0 USB 2.0 Bus Power & Self Power device spec. complianceEndpoint: Endpoint 0: 64 bytes control transfer. Endpoint 1: 512 bytes bulk transfer for IN transaction. Endpoint 2: 512 bytes bulk transfer for OUT transaction. Work with the default driver from windows 2000/XP/ME, Mac9.2, Mac OS X, Linux 2.4.2 Software features Backup/Scheduling backup / Restore supporting ATA IDE Support Complies with ATA/ATAPI-6 Draft Specification Support 28-bit/48-bit addressing Support PIO modes 0,1,2,3,4 and UDMA modes 0,1,2,3,4 Support HDD, CD-ROM, CD-RW, CD-COMBO, DVD-ROM,DVD-RW Embedded memory FIFO for data transfer User defines VID/PID through writing external EEROM Integrated 5V to 3.3V/1.8V Voltage Regulator Integrated PLL with 12MHz crystal input 48 pin LQFP package Pin Backward with M110B