USB2240 datasheet(20/43 Pages) MICROCHIP

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USB224X

DS00001979A-page 20

 2010 - 2015 Microchip Technology Inc.

Note 7-1

This value is a UNICODE UTF-16LE encoded string value that meets the USB 2.0 specification

(Revision 2.0, 2000). Values in double quotations without this note are ASCII values.

Note 7-2

For a list of the most current 16-bit language ID’s defined by the USB-IF, please visit

http://www.unicode.org or consult The Unicode Standard, Worldwide Character Encoding, (Version

4.0), The Unicode Consortium, Addison-Wesley Publishing Company, Reading, Massachusetts.

Note 7-3

The “SM” value will be overridden with “xD” once an xD-Picture Card has been identified.

7.2.3

EEPROM DATA DESCRIPTOR REGISTER DESCRIPTIONS

7.2.3.1

00h: USB Serial String Descriptor Length

7.2.3.2

01h: USB Serial String Descriptor Type

7.2.3.3

02h-19h: USB Serial Number Option

7.2.3.4

1Ah-1Bh: USB Vendor ID Option

7.2.3.5

1Ch-1Dh: USB Product ID Option

7.2.3.6

1Eh: USB Language Identifier Descriptor Length

DEh-FBh

Not Applicable

00h

FCh-FFh

NVSTORE_SIG

Non-Volatile Storage Signature

“ATA2”

Byte

Name

Description

USB_SER_LEN

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).

Byte

Name

Description

USB_SER_TYP

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.

Byte

Name

Description

25:2

USB_SER_NUM

Maximum string length is 12 hex digits. Must be unique to each device.

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.

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).

TABLE 7-1:

INTERNAL FLASH MEDIA CONTROLLER CONFIGURATIONS (CONTINUED)

Address

Description

Internal Default Value

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