MCP2210
3.6
Chip Status
The chip status command is used to retrieve status information regarding the state of the SPI transfer engine.
3.6.1
GET MCP2210 STATUS
TABLE 3-69: COMMAND STRUCTURE
Byte Index
Meaning
0
1
0x10 – Get MCP2210 Status – command code
0x00 – Reserved
0x00 – Reserved
0x00 – Reserved
2
3-63
3.6.1.1
Responses
TABLE 3-70: RESPONSE 1 STRUCTURE
Byte
Index
Meaning
0
1
2
0x10 – Get MCP2210 Status – echos back the given command code
0x00 – Command Completed Successfully
SPI Bus Release External Request Status
• 0x01 – No External Request for SPI Bus Release
• 0x00 – Pending External Request for SPI Bus Release
SPI Bus Current Owner
3
• 0x00 – No Owner
• 0x01 – USB Bridge
• 0x02 – External Master
4
5
Attempted Password Accesses – informs the USB host on how many times the NVRAM password
was tried
Password Guessed
• 0x00 – Password Not Guessed
• 0x01 – Password Guessed
Don’t Care
6-63
FIGURE 3-26:
GET MCP2210 STATUS LOGIC FLOW
Get MCP2210
Status
Response 1
MCP2210 Status
Information
Retrieved
2011 Microchip Technology Inc.
DS22288A-page 59
MICROCHIP [ MICROCHIP ]
