USB 2.0 ATA/ATAPI Controller with PD-DRM

Datasheet

Revision 0.2 (01-16-07)

6

SMSC USB2005

DATASHEET

Chapter 1 General Description

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

ATA-5 and -6 hard 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 a SCSI Inquiry command.

The device consists of a USB 2.0 PHY and SIE, buffers, Fast 8051 microprocessor with expanded

scratchpad and 768 of program SRAM, internal 48 KB program ROM, and an ATA-66 compatible

interface.

Provisions for optional external Flash Memory up to 64K bytes for program storage is provided. An

optional serial EEPROM which can be modified via USB from the host provides unique VID/PID/Serial

numbers, as well as optional configuration information.

Internal 768 Bytes of scratchpad SRAM are also provided. This internal SRAM can also be used for

program storage to implement program upgrade via USB download to external “boot block” Flash

program memory, if desired.

To facilitate portable media player designs, the ability to electrically detach the USB2005 from the drive

under external microprocessor control is provided, as well as an indication to that processor if the USB

bus is SUSPENDed when the USB2005 is attached to a USB host. See table below:

Table 1.1 Operational Conditions to Electrically Detach USB2005

OPERATIONAL CONDITION

USB BUS

STATUS

GPIO3 INPUT

GPIO1

OUTPUT

Attached to USB but USB host powered down. ie no

VBUS from host PC (IDE interface high impedance)

Unpowered

0

0

Media player uP forcing USB detach and high

impedance of USB2005 IDE interface

X0

0

External uP in media player allows USB connection of

USB2005 while attached to USB bus

Enumerating

1

Toggle due to

optional

external

SEEPROM

data reads

Normal USB operation/access to IDE

Normal

Operation

11

USB2005 attached to USB bus; USB Host in SUSPEND

or Safe Removal has occurred via toolbar applet

(USB2005 IDE interface high impedance)

SUSPEND

X

0

Media Player detached from USB bus (USB2005 IDE

interface high impedance)

Unconnected

X

0