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High Speed Inter-Chip USB 2.0 Hub and Flash Media Controller
Datasheet
Revision 1.0 (06-01-09) 50 SMSC USB4640/USB4640i
DATASHEET
8.4.4.24 F7h-FBh: Not Applicable
8.4.4.25 FCh-FFh: Non-Volatile Storage Signature
8.4.5 Internal Flash Media Controller Extended Configurations
Enable Registers 100h - 17Fh by setting bit 7 of bmAttribute.
8.4.5.1 100h-106h: Combo LUN 0 Identifier String
8.4.5.2 107h-10Dh: Combo LUN 1 Identifier String
8.4.5.3 10Eh-114h: Combo LUN 2 Identifier String
8.4.5.4 115h-11Bh: Combo LUN 3 Identifier String
BIT BYTE NAME DESCRIPTION
7:0 Not Applicable Not applicable.
BYTE NAME DESCRIPTION
3:0 NVSTORE_SIG This signature is used to verify the validity of the data in the first 256 bytes of
the configuration area. The signature must be set to ‘ATA2’ for
USB4640/USB4640i.
BYTE NAME DESCRIPTION
6:0 CLUN0_ID_STR If the device to LUN mapping bytes have configured this LUN to be a combo
LUN, then these strings will be used to identify the LUN rather than the
device identifier strings.
BYTE NAME DESCRIPTION
6:0 CLUN1_ID_STR If the device to LUN bytes have configured this LUN to be a combo LUN,
then these strings will be used to identify the LUN rather than the device
identifier strings.
BYTE NAME DESCRIPTION
6:0 CLUN2_ID_STR If the device to LUN mapping bytes have configured this LUN to be a combo
LUN, then these strings will be used to identify the LUN rather than the
device identifier strings.
BYTE NAME DESCRIPTION
6:0 CLUN3_ID_STR If the device to LUN mapping bytes have configured this LUN to be a combo
LUN, then these strings will be used to identify the LUN rather than the
device identifier strings.