Advanced Card Systems Limited ACR1281U Benutzerhandbuch

ACR1281U

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Advanced Card Systems Ltd.

Page 55 of 81

BYTE 1

…

BYTE N

PROT 1

PROT 2

PROT3

PROT 4

SW1

SW2

• BYTE x

Data read from memory card

• PROT y

Bytes containing the protection bits from protection memory

• SW1, SW2

= 90 00 if no error

• The arrangement of the protection bits in the PROT bytes is as follows:

PROT 1

PROT 2

…

P16

P15

P14

P13

P12

P11

P10

P18

P17

•  Px is the protection bit of BYTE x in the response data
•  ‘0’ byte is write protected
•  ‘1’ byte can be written

6.3 Read Present Error Counter Memory Card (only SLE4442 and SLE5542)

To read the presentation error counter for the secret code.

• Command format

Pseudo-APDU

CLA

INS

MEM_L

• Response data format

ERRCNT

DUMMY 1

DUMMY 2

DUMMY 3

SW1

SW2

• ERRCNT

The value of the presentation error counter. 07 indicates the last verification

is correct. 00 indicates the password is locked (exceed maximum number of retries). Other
values indicate the last verification is failed.

• DUMMY

Three bytes dummy data read from the card.