USB2005 Datasheet, PDF (16/21 Pages) SMSC Corporation – USB2.0 ATA/ATAPI CONTROLLER WITH PD - DRM

7.2.1
USB2.0 ATA/ATAPI Controller with PD-DRM
Device Serial Number & Page Length (Bytes 3 & 4...n)
Datasheet
In response to a SCSI INQUIRY Command, the USB2005 firmware will read the “Device Identify
Information” of an IDE drive. The Device Serial Number is created by removing all NULL code (00h)
and BLANK code (20h) characters from the “Device Identify Information” response. The Device Serial
Number is reported in Byte 4...n (see Table 7.2). The number of characters of the Device Serial
Number will be reported as the Page Length (Byte 3) see Table 7.2.
As a simple example, If the Device Identify Information of an IDE drive is 713 740, then the USB2005
will return 713740 as the Device Serial Number with a Page Length of 6.
Revision 0.2 (06-07-05)
16
DATASHEET
SMSC USB2005