USB2250 datasheet(24/43 Pages) MICROCHIP

24 / 43 page

USB2250/50i/51/51i

DS00002005A-page 24

 2009 - 2015 Microchip Technology Inc.

7.2.3.5

1Ch-1Dh: USB Product ID Option

7.2.3.6

1Eh: USB Language Identifier Descriptor Length

7.2.3.7

1Fh: USB Language Identifier Descriptor Type

7.2.3.8

20h: USB Language Identifier Least Significant Byte

7.2.3.9

21h: USB Language Identifier Most Significant Byte

7.2.3.10

22h: USB Manufacturer String Descriptor Length

7.2.3.11

23h: USB Manufacturer String Descriptor Type

7.2.3.12

24h-31h: USB Manufacturer String Option

Byte

Name

Description

1:0

USB_PID

This ID is unique for every product. The product ID is assigned by the vendor.

Byte

Name

Description

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).

Byte

Name

Description

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.

Byte

Name

Description

USB_LANG_ID

_LSB

English language code = ‘0409’. See Note 7-2 to reference additional language

ID’s defined by the USB-IF.

Byte

Name

Description

USB_LANG_ID

_MSB

English language code = ‘0409’. See Note 7-2 to reference additional language

ID’s defined by the USB-IF.

Byte

Name

Description

USB_MFR_STR

_LEN

USB manufacturer 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

USB_MFR_STR

_TYP

USB manufacturer 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.

Byte

Name

Description

15:2

USB_MFR_STR

Maximum string length is 29 characters.

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