SMSC USB464, USB4640i 02h-19h:USB Serial Number Option, 8.4.1.41Ah-1Bh:USB Vendor ID Option, 1Ch-1Dh:USB Product ID Option, 1Eh: USB Language Identifier Descriptor Length

High Speed Inter-Chip USB 2.0 Hub and Flash Media Controller

Datasheet
8.4.1.3	02h-19h: USB Serial Number Option
BYTE	NAME	DESCRIPTION
25:2	USB_SER_NUM	Maximum string length is 12 hex digits. Must be unique to each device.

8.4.1.41Ah-1Bh: USB Vendor ID Option

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.
8.4.1.5	1Ch-1Dh: USB Product ID Option
BYTE	NAME	DESCRIPTION
1:0	USB_PID	This ID is unique for every product. The product ID is assigned by the vendor.
8.4.1.6	1Eh: USB Language Identifier Descriptor Length
BYTE	NAME	DESCRIPTION
0	USB_LANG_LEN	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).
8.4.1.7	1Fh: USB Language Identifier Descriptor Type
BYTE	NAME	DESCRIPTION
1	USB_LANG_TYP	USB language ID 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.
8.4.1.8	20h: USB Language Identifier Least Significant Byte
BYTE	NAME	DESCRIPTION
2	USB_LANG_ID	English language code = ‘0409’. See Note 8.3 to reference additional
	_LSB	language ID’s defined by the USB-IF.
8.4.1.9	21h: USB Language Identifier Most Significant Byte
BYTE	NAME	DESCRIPTION
3	USB_LANG_ID	English language code = ‘0409’. See Note 8.3 to reference additional
	_MSB	language ID’s defined by the USB-IF.

SMSC USB4640/USB4640i 33 Revision 1.0 (06-01-09)

DATASHEET