ACS ACR38 - READ_PRESENTATION_ERROR_COUNTER_MEMORY_CARD (Only SLE 4442); CHANGE_CODE_MEMORY_CARD (Only SLE 4442)

ACR38 Reference Manual version 1.9 February 2006
Response data format
Header Status Data length ERRCNT CODE SW1 SW2
LEN Byte 1 Byte 2 Byte 3
01
H
ERRCNT The value of the presentation error counter after the code presentation.
CODE The three bytes secret code read from the card.
SW1, SW2 = 90
H
00
H
if no error
If the correct code has been presented to the card, the value of ERRCNT is 07
H
and the value of CODE is
identical to the code data specified in the command.
8.2.7.6 READ_PRESENTATION_ERROR_COUNTER_MEMORY_CARD (only SLE 4442)
To read the presentation error counter for the secret code.
Command format
Header Instruction Data length Data
LEN CLA INS P1 P2 MEM_L
MSB LSB
01
H
A0
H
00
H
08
H
FF
H
B1
H
00
H
00
H
00
H
Response data format
Header Status Data length ERRCNT DUMMY 1 DUMMY 2 DUMMY 3 SW1 SW2
LEN
01
H
ERRCNT The value of the presentation error counter.
DUMMY Three bytes dummy data read from the card.
SW1, SW2 = 90
H
00
H
if no error
8.2.7.7 CHANGE_CODE_MEMORY_CARD (only SLE 4442)
To write the specified data as new secret code in the card.
The current secret code must have been presented to the card with the PRESENT_CODE command prior to
the execution of this command!
Command format
Header Instruction Data length Data
LEN CLA INS P1 P2 MEM_L CODE
MSB LSB Byte 1 Byte 2 Byte 3
01
H
A0
H
00
H
08
H
FF
H
D2
H
00
H
01
H
03
H
 Advanced Card Systems Ltd. Page 35 of 43