MCP2210 MICROCHIP [Microchip Technology], MCP2210 Datasheet - Page 33

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

TABLE 3-31:
TABLE 3-32:
FIGURE 3-11:
 2011 Microchip Technology Inc.
Index
Index
Byte
Byte
3-63
3-63
Access Granted
Access Granted
0
1
2
0
1
2
Response 1
Response 5
0x70 – SEND ACCESS Password – echos back the given command code
0xFB – Access Not Allowed – Chip conditional access is on, the password does not match and the
Don’t Care
Don’t Care
0x70 – SEND ACCESS Password – echos back the given command code
0x00 – Command Completed Successfully – Chip conditional access is on, the supplied password is
Don’t Care
Don’t Care
Not Protected
Chip Settings
TRUE
RESPONSE 4 STRUCTURE
RESPONSE 5 STRUCTURE
matching the one stored in the chip’s NVRAM.
number of attempts is above the accepted threshold of 5. The Access Password mechanism is
temporarily blocked and no further password access will be accepted until the next power-up.
SEND ACCESS PASSWORD LOGIC FLOW
Password
Matched
FALSE
the Number of Attempts
TRUE
Chip Access Rejected
FALSE
Response 3
Increment
Chip Settings
Send Access
Protected
Password
Password
Attempts
< 5
Meaning
Meaning
TRUE
TRUE
Chip Access Rejected
Response 4
FALSE
Chip Access Lock
Password
Protected
Temporarily
Chip Access Rejected
FALSE
Response 2
MCP2210
Permanent Lock
DS22288A-page 33