USB2640 datasheet(31/60 Pages) MICROCHIP

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 2015-2021 Microchip Technology Inc.

DS00001947C-page 31

USB2640/USB2641

7.3.4.6

A9h: LED Blink Duration (1 byte)

7.3.4.7

AAh-B0h: Device 0 Identifier String

7.3.4.8

B1h-C5h: Not Applicable

7.3.4.9

C6h-CDh: Inquiry Vendor String

7.3.4.10

CEh-D2h: Inquiry Product String

Byte

Name

Description

LED_BLK_DUR

LED blink After Access. This byte is used to designate the number of seconds

that the LED will continue to blink after a drive access. Setting this byte to "05"

will cause the LED to blink for 5 seconds after a drive access.

Byte

Name

String

Description

6:0

DEV0_ID_STR

“COMBO”

MS, SM, and SD/MMC are mapped to device 0

identifier string because USB2640/USB2641 only

supports one LUN. When applicable, the "SM" value

will be overridden with xD once an xD-Picture Card

has been identified.

Byte

Name

Description

20:0

Not Applicable

Not applicable to USB2640/USB2641.

Byte

Name

String

Description

7:0

INQ_VEN_STR

“Generic”

If bit 4 of the 1st attribute byte is set, the device will

use these strings in response to a USB inquiry

command, instead of the USB Descriptor

Manufacturer and Product ID Strings.

Byte

Name

Unit

Description

4:0

INQ_PRD_STR

2640

If bit 4 of the 1st attribute byte is set, the device will

use these strings in response to a USB inquiry

command, instead of the USB Descriptor Manufacturer

and Product ID Strings.

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