USB2251-NU-05 Standard Microsystems (SMSC), USB2251-NU-05 Datasheet - Page 30

• Manufacturer Part Number: USB2251-NU-05
• Description: ULTRA FAST USB 2.0 MULTI-SLOT FLASH MEDI
• Manufacturer: Standard Microsystems (SMSC)

Specifications of USB2251-NU-05

• Lead Free Status / RoHS Status: Supplier Unconfirmed

Revision 2.0 (09-29-09)
8.2.3.19
BYTE
0
1
2
3
ATT_HLB
ATT_LHB
ATT_HB
ATT_LB
9Ch-9Fh: Attribute Byte Descriptions
NAME
BYTE
BIT
3:0
3:0
7:3
6:0
4
5
6
7
4
5
6
7
1
2
7
0
Always reads ‘0’.
Inquire Manufacturer and Product ID Strings
‘1’ - Use the Inquiry Manufacturer and Product ID Strings.
‘0’ (default) - Use the USB Descriptor Manufacturer and Product ID Strings.
Always reads ‘0’.
Reverse SD Card Write Protect Sense
‘1’ (default) - SD cards will be write protected when SW_nWP is high, and
writable when SW_nWP is low.
‘0’ - SD cards will be write protected when SW_nWP is low, and writable
when SW_nWP is high.
Reserved.
Always reads ‘0’.
Activity LED True Polarity
‘1’ - Activity LED to Low True.
‘0’ (default) - Activity LED polarity to High True.
Common Media Insert / Media Activity LED
‘1’ - The activity LED will function as a common media inserted/media
access LED.
‘0’ (default) - The activity LED will remain in its idle state until media is
accessed.
Always reads ‘0’.
Reserved.
Attach on Card Insert / Detach on Card Removal
‘1’ - Attach on Insert is enabled.
‘0’ (default) - Attach on Insert is disabled.
Always reads ‘0’.
Enable Device Power Configuration
‘1’ - Custom Device Power Configuration stored in the NVSTORE is used.
‘0’ (default) - Default Device Power Configuration is used.
Always reads ‘0’.
Always reads ‘0’.
xD Player Mode
DATASHEET
30
DESCRIPTION
Ultra Fast USB 2.0 Multi-Slot Flash Media Controller
SMSC USB2250/50i/51/51i
Datasheet