MCP2210 datasheet(33/82 Pages) MICROCHIP

33 / 82 page

 2011 Microchip Technology Inc.

DS22288A-page 33

MCP2210

FIGURE 3-11:

SEND ACCESS PASSWORD LOGIC FLOW

TABLE 3-31:

RESPONSE 4 STRUCTURE

Byte

Index

Meaning

00x70 – SEND ACCESS Password – echos back the given command code

10xFB – Access Not Allowed – Chip conditional access is on, the password does not match and the

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.

Don’t Care

3-63

Don’t Care

TABLE 3-32:

RESPONSE 5 STRUCTURE

Byte

Index

Meaning

00x70 – SEND ACCESS Password – echos back the given command code

10x00 – Command Completed Successfully – Chip conditional access is on, the supplied password is

matching the one stored in the chip’s NVRAM.

Don’t Care

3-63

Don’t Care

Send Access

Password

FALSE

TRUE

FALSE

TRUE

Response 1

Response 2

Response 4

Response 3

Response 5

Chip Settings

Protected

Chip Settings

Not Protected

Access Granted

Permanent Lock

Password

Protected

Password

Attempts

< 5

Password

Matched

Access Granted

Chip Access Rejected

Increment

the Number of Attempts

Temporarily

Chip Access Lock

MCP2210 Datasheet(PDF) 33 Page - Microchip Technology

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