MCP2210 MICROCHIP [Microchip Technology], MCP2210 Datasheet - Page 31

• Manufacturer Part Number: MCP2210
• Description: USB-to-SPI Protocol Converter with GPIO (Master Mode)
• Manufacturer: MICROCHIP [Microchip Technology]

3.1.10
TABLE 3-25:
3.1.10.1
TABLE 3-26:
FIGURE 3-10:
 2011 Microchip Technology Inc.
Index
Index
Byte
3-63
Byte
8-63
0
1
2
0
1
2
3
4
5
6
7
GET USB PRODUCT NAME
0x61 – Get NVRAM Settings – command code
0x40 – Get USB Product Name – sub-command code
0x00 – Reserved
0x00 – Reserved
0x61 – Get NVRAM Settings – echos back the given command code
0x00 – Command Completed Successfully
0x40 – Sub-command Echoed Back for Get USB Product Name code
Don’t Care
Total USB String Descriptor Length (this is the length of the Product string multiplied by 2 + 2)
USB String Descriptor ID – always 0x03
Unicode Character Low byte
Unicode Character High byte
Remaining Unicode Characters
Responses
- The retrieved value is: (25 x 2) + 2 = 52 (decimal) = 0x34
- This byte index will have a value of 0x4D
- This byte index will have a value of 0x00
Example: For the “MCP2210 USB to SPI Master” Unicode string, there will be the low byte of the
Example: For the “MCP2210 USB to SPI Master” Unicode string, there will be the high byte of the
Example: “MCP2210 USB to SPI Master” has 25 Unicode characters
COMMAND STRUCTURE
RESPONSE 1 STRUCTURE
GET USB PRODUCT NAME LOGIC FLOW
Unicode for character “M”.
Unicode for character “M”.
Get NVRAM USB
Product Name
Product Name
Response 1
NVRAM USB
Retrieved
Meaning
Meaning
MCP2210
DS22288A-page 31