USB 3.0 write blockerSenior Design Group Dec 1108

Team membersChen Zhao

Elphas SangYan FangAdvisor

Dr. Zhao ZhangClient

Joe Lane (ECI from DMACC)

Project goal• Implement a USB to SATA device write blocker• A device with both USB 2.0 and USB 3.0 enabled• A device working as a USB to SATA adapter with

writing block enabled

Block diagram

Project status• Implementation done• Hardware part

– TI TUSB 9261 EVM board device– SATA SSD for testing– PC host with necessary software for compiling and testing

• Software part– TUSB926x flash burner utility– TI confidential source code for TUSB9261 firmware– Code Compiler Studio (TI official C/C++ compiler)

• Implementation to be done

To redevelop the firmware source code, redesign the SCSI command handler, correctly block writing commands without fault. Testing and evaluation comes together with code development.

Testing to be done• TI TUSB 9261 Evaluation Board• Intel® Core™2 Duo processor E8000: The processor is

efficient in that it reduces the amount of power need by the CPU therefore less CPU heat and prolonged system’s life.

• Hard Disk: Intel SSD 320 Series 80GB• Excellent performance and energy efficiency: The device

high performance and is power efficient. The device needs testing in superSpeed USB mode.

• The bridge has support for data rate of up to 5Gbps. • The device drops writing commands and allows reading

commands. In this case the no data is contaminated by modification of information contained in the external HDD.

Success criteria and assessment

• The project succeeds when code implementation is done and passes all tests

• To what degree the team would attain success– Mostly confident

•Questions?