Present_Code (Only Sle 4442) (*) - ACS ACR30 Reference Manual

Command format
Instruction
Code
94
LEN Number of data bytes to be write protected, N, + 2
ADDR Byte address in the card of the first byte to be write protected. The high byte of the
address is specified as the first byte of ADDR.
BYTE x Byte values to be compared with the data in the card starting at address ADDR. BYTE 1
is compared with the data at address ADDR; BYTE N is compared with the data at
address ADDR+N-1.
Response data format
No response data
9.2.3.6.

PRESENT_CODE (only SLE 4442) (*)

To submit the secret code to the card to enable the write operation with the SLE 4442 card.
The following actions are executed by the ACR30:
- search a '1' bit in the presentation error counter and write the bit to '0'
- present the specified code to the card
- try to erase the presentation error counter
Command format
Instruction Code
92
CODE Three bytes secret code (PIN)
Response data format
ERRCNT The value of the presentation error counter after the code presentation.
CODE The three bytes secret code read from the card.
If the correct code has been presented to the card, the value of ERRCNT is 07
value of CODE is identical to the code data specified in the command.
ACR30 Reference Manual
Version 3.3 January 2009
Data length
LEN ADDR
H
Data length
03
H H
ERRCNT
Data
BYTE 1 ...
Data
CODE
CODE
ACR30
... BYTE
N
and the
H
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