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High Speed Inter-Chip USB 2.0 Hub and Flash Media Controller
Datasheet
Revision 1.0 (06-01-09) 32 SMSC USB4640/USB4640i
DATASHEET
8.4 Set bit 7 of bmAttribute to enable the registers in Ta ble 8 . 4 .
Note 8.1 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 8.2 A value of “SM” will be overridden with “xD” once an xD-Picture Card has been identified.
Note 8.3 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.
8.4.1 EEPROM Data Descriptor Register Descriptions
8.4.1.1 00h: USB Serial String Descriptor Length
8.4.1.2 01h: USB Serial String Descriptor Type
Table 8.4 Internal Flash Media Controller Extended Configurations
ADDRESS REGISTER NAME DESCRIPTION INTERNAL DEFAULT VALUE
100h - 106h CLUN0_ID_STR Combo LUN 0 Identifier String “COMBO”
107h - 10Dh CLUN1_ID_STR Combo LUN 1 Identifier String “COMBO”
10Eh - 114h CLUN2_ID_STR Combo LUN 2 Identifier String “COMBO”
115h - 11Bh CLUN3_ID_STR Combo LUN 3 Identifier String “COMBO”
11Ch - 122h CLUN4_ID_STR Combo LUN 4 Identifier String “COMBO”
123h - 129h Not Applicable - N/A
12Ah-145h Not applicable - 00h
146h
DYN_NUM_
EXT_LUN
Dynamic Number of Extended
LUNs
01h
147h - 14Bh DEV_LUN_MAP Device to LUN Mapping 01h, FFh, FFh, FFh, FFh
14Ch Not Applicable - 0Ah
14Dh-17Bh Not Applicable - 00h
17Ch-17Fh NVSTORE_SIG2 Non-Volatile Storage Signature “ecf1”
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.