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USB2240 データシート(PDF) 21 Page - Microchip Technology |
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USB2240 データシート(HTML) 21 Page - Microchip Technology |
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21 / 43 page ![]() 2010 - 2015 Microchip Technology Inc. DS00001979A-page 21 USB224X 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 7.2.3.13 32h-5Dh: Reserved 7.2.3.14 5Eh: USB Product String Descriptor Length 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. Byte Name Description 2 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 3 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 0 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 1 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 The maximum string length is 29 characters. Byte Name Description 59:16 Reserved Reserved. Byte Name Description 0 USB_PRD_STR _LEN USB product 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). Maximum string length is 29 characters |
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