USB2251-NU-05 Standard Microsystems (SMSC), USB2251-NU-05 Datasheet - Page 27

• 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

Ultra Fast USB 2.0 Multi-Slot Flash Media Controller
Datasheet
SMSC USB2250/50i/51/51i
8.2.3
8.2.3.1
8.2.3.2
8.2.3.3
8.2.3.4
8.2.3.5
8.2.3.6
BYTE
BYTE
BYTE
BYTE
BYTE
BYTE
25:2
1:0
1:0
0
1
0
EEPROM Data Descriptor Register Descriptions
00h: USB Serial String Descriptor Length
01h: USB Serial String Descriptor Type
02h-19h: USB Serial Number Option
1Ah-1Bh: USB Vendor ID Option
1Ch-1Dh: USB Product ID Option
1Eh: USB Language Identifier Descriptor Length
USB_LANG_LEN
USB_SER_NUM
USB_SER_LEN
USB_SER_TYP
USB_VID
USB_PID
NAME
NAME
NAME
NAME
NAME
NAME
This ID is unique for every vendor. The vendor ID is assigned by the USB
Implementer’s Forum.
This ID is unique for every product. The product ID is assigned by the vendor.
USB language ID 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).
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).
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.
Maximum string length is 12 hex digits. Must be unique to each device.
DATASHEET
27
DESCRIPTION
DESCRIPTION
DESCRIPTION
DESCRIPTION
DESCRIPTION
DESCRIPTION
Revision 2.0 (09-29-09)