USB 2.0 ATA/ATAPI Controller with PD-DRM

Datasheet

SMSC USB2005

15

Revision 0.2 (01-16-07)

DATASHEET

Chapter 7 PD-DRM Usage & Description

The USB2005 is a USB 2.0 Mass Storage Class Peripheral Controller intended for use with standard

ATA-5 and -6 hard disk drives in media player applications requiring Portable Device – Digital Rights

Management (PD-DRM) as specified by Microsoft for Windows Media systems. This includes reporting

all media as removable drives and providing the drive serial number to the PC host via the SCSI

Inquiry command.

7.1

SCSI Inquiry Command

In accordance with the SCSI-2 specification the INQUIRY command has the format shown in Table 7.1,

"SCSI INQUIRY Command Block"

When performing a device serial number query, the following fields must be programmed as follows:

EVPD = 1, and Page Code = 80h

7.2

SCSI Inquiry Response

In accordance with the SCSI-2 specification the response to INQUIRY command has the format shown

in Table 7.2, "Data Buffer Returned for Device Serial Number Query".

Table 7.1 SCSI INQUIRY Command Block

BIT 7BIT 6BIT 5BIT 4BIT 3BIT 2BIT 1BIT 0

Byte 0: Operation Code

12h

Byte 1: Logical Unit Number

LUN

Reserved

EVPD

Byte 2: Parameters 1

Page Code

Byte 3: Parameters 2

Reserved

Byte 4: Parameters 3

Allocation Length

Byte 5: Control Field

Vendor Specific

Reserved

Flag

Link

Table 7.2 Data Buffer Returned for Device Serial Number Query

BYTE #

BIT 7BIT 6BIT 5BIT 4BIT 3BIT 2BIT 1BIT 0

0

Peripheral Qualifier

Device Type Code

1

Page Code (80h)

2

Reserved

3

Page Length (n-3)

4

Device serial number

n