MCP2210 datasheet(30/82 Pages) MICROCHIP

30 / 82 page

MCP2210

DS22288A-page 30

 2011 Microchip Technology Inc.

3.1.9

GET USB MANUFACTURER NAME

3.1.9.1

Responses

FIGURE 3-9:

GET USB MANUFACTURER NAME LOGIC FLOW

TABLE 3-23:

COMMAND STRUCTURE

Byte

Index

Meaning

00x61 – Get NVRAM Settings – command code

10x50 – Get USB Manufacturer Name – sub-command code

20x00 – Reserved

3-63

0x00 – Reserved

TABLE 3-24:

RESPONSE 1 STRUCTURE

Byte

Index

Meaning

0x61 – Get NVRAM Settings – echos back the given command code

0x00 – Command Completed Successfully

0x50 – Sub-command Echoed Back for Get USB Manufacturer Name code

Don’t Care

Total USB String Descriptor Length (this is the length of the Manufacturer string multiplied by 2 + 2)

Example: “Microchip Technology Inc.” has 25 Unicode characters.

- The retrieved value is: (25 x 2) + 2 = 52 (decimal) = 0x34

USB String Descriptor ID – always 0x03

Unicode Character Low Byte

Example: For the “Microchip Technology Inc.” Unicode string, there will be the low byte of the Unicode

for character “M”.

- This byte index will have a value of 0x4D

Unicode Character High Byte

Example: For the “Microchip Technology Inc.” Unicode string, there will be the high byte of the

Unicode for character “M”.

- This byte index will have a value of 0x00

8-63

Remaining Unicode Characters

Get NVRAM USB

Manufacturer Name

Response 1

NVRAM USB

Manufacturer

Name Retrieved

MCP2210 Datasheet(PDF) 30 Page - Microchip Technology

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