2009 - 2015 Microchip Technology Inc. DS00002005A-page 23
USB2250/50i/51/51i
Note 7-1 This value is a UNICODE UTF-16LE encoded string value that meets the USB 2.0 specification
(Revision 2.0, 2000). Values in double quotations without this note are ASCII values.
Note 7-2 For a list of the most current 16-bit language ID’s defined by the USB-IF, please visit
http://www.unicode.org or consult The Unicode Standard, Worldwide Character Encoding, (Version
4.0), The Unicode Consortium, Addison-Wesley Publishing Company, Reading, Massachusetts.
7.2.3 EEPROM DATA DESCRIPTOR REGISTER DESCRIPTIONS
7.2.3.1 00h: USB Serial String Descriptor Length
7.2.3.2 01h: USB Serial String Descriptor Type
7.2.3.3 02h-19h: USB Serial Number Option
7.2.3.4 1Ah-1Bh: USB Vendor ID Option
A7h SD_PWR_HB Secure Digital Device
Power Hi byte
80h
A8h LED_BLK_INT LED Blink Interval 02h
A9h LED_BLK_DUR LED Blink After Access 28h
AAh - B0h DEV0_ID_STR Device 0 Identifier String “CF”
B1h - B7h DEV1_ID_STR Device 1 Identifier String “MS”
B8h - BEh DEV2_ID_STR Device 2 Identifier String “SM”
BFh - C5h DEV3_ID_STR Device 3 Identifier String “SD/MMC”
C6h - CDh INQ_VEN_STR Inquiry Vendor String “Generic”
CEh-D2h INQ_PRD_STR Inquiry Product String 2250
D3h DYN_NUM_LUN Dynamic Number of LUNs FFh
D4h - D7h DEV_LUN_MAP Device to LUN Mapping FFh, FFh, FFh, FFh
D8h - DAh MS_BUS_TIMINGReserved - 00h, 03h, 07h
DBh - DDh MS_BUS_TIMINGReserved - 5Ch, 56h, 97h
DEh-FBh Not Applicable - 00h
FCh-FFh NVSTORE_SIG Non-Volatile Storage Signature “ATA2”
Byte Name Description
0 USB_SER_LEN USB serial string descriptor length as defined by Section 9.6.7 “String” of the
USB 2.0 Specification (Revision 2.0, 2000). This field is the “bLength” which
describes the size of the string descriptor (in bytes).
Byte Name Description
1 USB_SER_TYP USB serial string descriptor type as defined by Section 9.6.7 “String” of the
USB 2.0 Specification (Revision 2.0, 2000). This field is the “bDescriptorType”
which is a constant value associated with a string descriptor type.
Byte Name Description
25:2 USB_SER_NUM Maximum string length is 12 hex digits. Must be unique to each device.
Byte Name Description
1:0 USB_VID This ID is unique for every vendor. The vendor ID is assigned by the USB
Implementer’s Forum.
TABLE 7-1: INTERNAL FLASH MEDIA CONTROLLER CONFIGURATIONS (CONTINUED)
Address Register Name Description Internal Default Value
