Microchip Technology ADM00419 Data Sheet

 2011 Microchip Technology Inc.

DS22288A-page 11

MCP2210 implements the HID interface for all the
device-provided functionalities. The chip uses a
command/response mechanism for the USB engine.
This means that for every USB command sent (by the
USB host) to the MCP2210, it will always reply

 

with a

response packet. 
The MCP2210 USB commands can be grouped by
their provided features as follows:
•

- Read/Write NVRAM related parameters
- Send access password

•

 (copied from NVRAM 

at power-up or Reset):
- Read/Write (volatile – RAM stored settings) 

SPI transfer settings

- Read/Write (volatile – RAM stored settings) 

chip settings

- Read/Write (volatile – RAM stored settings) 

GPIO direction

- Read/Write (volatile – RAM stored settings) 

GPIO output values

•

•

•

- Read/Write SPI transfer data
- Cancels the ongoing SPI transfer
- SPI bus release manipulation

•

 and Unsupported commands

The commands in this category are related to the NVRAM settings manipulation.

3.1.1

SET CHIP SETTINGS POWER-UP DEFAULT

0

0x60 – Set Chip NVRAM Parameters – command code

1

0x20 – Set Chip Settings Power-up Default – sub-command code

2

0x00 – Reserved

3

0x00 – Reserved

4

GP0 Pin Designation 
• GPIO = 0x00 
• Chip Selects = 0x01
• Dedicated Function pin = 0x02

5

GP1 Pin Designation 
• GPIO = 0x00 
• Chip Selects = 0x01 
• Dedicated Function pin = 0x02

6

GP2 Pin Designation 
• GPIO = 0x00 
• Chip Selects = 0x01 
• Dedicated Function pin = 0x02

7

GP3 Pin Designation
• GPIO = 0x00 
• Chip Selects = 0x01 
• Dedicated Function pin = 0x02

8

GP4 Pin Designation
• GPIO = 0x00 
• Chip Selects = 0x01 
• Dedicated Function pin = 0x02