NEC V850ES/Jx3-H, Руководство пользователя

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V850ES/Jx3H – Plug it!
11.4.4 Mass Storage Class (MSC)
The sample driver is a bulk-only mass storage class (MSC) driver. Bulk-only transport transfers commands,
status, and data with bulk transferring. Commands are sent from host to device with bulk-out transferring.
This is defined in the Command Block Wrapper (CBW) Format . When the command needs to transfer data
as well, it executes to input/output the data with bulk-in and bulk-out transferring.
The status data is transferred from device to host with bulk-in transferring. This is defined in the Command
Status Wrapper (CSW) Format. For information about USB mass storage class (MSC), please refer to the
MSC specification "Universal Serial Bus Mass Storage Class Bulk-Only Transport Revision 1.0". The sample
driver responds to the following class requests:
- GET_MAX_LUN
To retrieve the logical unit number for the mass storage device.
- MASS_STORAGE_RESET
To reset the interface that is related to the mass storage device.
11.4.5 SCSI Command Process
In the sample program, SCSI command process is structured on the MSC sample driver. It processes
capsulated SCSI commands to the Command Block Wrapper (CBW).
The sample driver supports following SCSI commands:
- TEST_UNIT_READY
- SEEK
- START_STOP_READY - SYNCHRONIZE_CACHE
- REQUEST_SENSE - INQUIRY
- READ6 - READ10
- MODE_SENSE6 - MODE_SENSE10
- READ_FORMAT_CAPACITIES - READ_CAPACITY
- WRITE6 - WRITE10
- MODE_SELECT - MODE_SELECT10
- VERIFY - WRITE_VERIFY
- WRITE_BUFF - PREVENT
*Responds STALL when it receives commands other than above.
User’s Manual U19647EE2V0UM00
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