Rainbow-electronics MAX66020 Bedienungsanleitung PDF herunterladen (Seite 11)

The command descriptions in this section only show

the information field of the I-blocks used to transmit

requests and responses. Since the MAX66020 neither

supports chaining nor generates WTX requests, when it

receives an I-block, the MAX66020 responds with an

I-block. The block number in the I-block response is the

same as in the I-block request.

Error Indication

Depending on the complexity of a function, various

error conditions can occur. In case of an error, the

response to a request begins with a 01h byte followed

by one error code.

Table 4 shows a matrix of commands and potential

errors. If there was no error, the information field of

the response begins with 00h followed by command-

specific data, as specified in the detailed command

description.

If the MAX66020 does not recognize a command, it

does not generate a response.

Detailed Command Descriptions

Get System Information

This command allows the master to retrieve technical

information about the MAX66020. In the response, the

least significant UID byte is transmitted first. The

response is adapted from ISO 15693-3, Section 10. The

IC reference code indicates the die revision in hexa-

decimal format, such as A1h, A2h, B1h, etc. To receive

the system information, issue a request with the com-

mand code 2Bh in the request information field.

MAX66020

ISO/IEC 14443 Type B-Compliant

1Kb Memory Fob

______________________________________________________________________________________ 11

FAILING COMMANDS

ERROR DESCRIPTION

ERROR

CODE

Get System Information

Write Single Block

Lock Block

Read Single Block

Read Single Block with

Block Security Status

Custom Read Block

Write AFI

Lock AFI

Get UID

Invalid block number 10h 

Already locked 11h  

Write access failed because block is locked 12h  

Table 4. Error Code Matrix

INDICATOR

INFO

FLAGS

UID U1 AFI

NUMBER OF

BLOCKS

MEMORY BLOCK

SIZE

IC REFERENCE

00h 0Fh (8 Bytes) (1 Byte) (1 Byte) 12h 07h (1 Byte)

Response Information Field for the Get System Information Command (No Error)

1 2 ... 6 7 8 9 10 11 12 13 14 15 16 ... 24 25

MAX66020 1
1Kb Memory Fob 1

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