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USB2005 Datasheet(PDF) 6 Page - SMSC Corporation |
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USB2005 Datasheet(HTML) 6 Page - SMSC Corporation |
6 / 21 page 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 |
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Similar Description - USB2005 |
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