ACR3901U-S1 – Reference Manual
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Version 1.09
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7.2.5.3.
READ_PRESENTATION_ERROR_COUNTER_MEMORY_CARD
(SLE4428 and SLE5528)
This command is used to read the presentation error counter for the secret code.
Command Format (
abData
field in the
PC_to_RDR_XfrBlock
)
Pseudo-APDU
CLA
INS
P1
P2
MEM_L
FFh
B1h
00h
00h
03h
Response Data Format (
abData
field in the
RDR_to_PC_DataBlock
)
ERRCNT
DUMMY 1
DUMMY 2
SW1
SW2
Where:
ERRCNT
Error Counter. FFh indicates that the last verification is correct. 00h
indicates that the password is locked (exceeded the maximum number of
retries). Other values indicate that the last verification has failed.
DUMMY
Two bytes dummy data read from the card
SW1 SW2
= 90 00h if no error
7.2.5.4.
READ_PROTECTION_BIT
Command Format (
abData
field in the
PC_to_RDR_XfrBlock
)
Pseudo-APDU
CLA
INS
Byte Address
MEM_L
MSB
LSB
FFh
B2h
Where:
MSB Byte Address
= 0000 00A
9
A
8
b is the memory address location of the memory card
LSB Byte Address
= A
7
A
6
A
5
A
4
A
3
A
2
A
1
A
0
b is the memory address location of the memory
card
MEM_L
Length of protection bits to be read from the card, in multiples of 8
bits. Maximum value is 32.
MEM_L = 1 + INT( (number of bits - 1)/8 )
For example, to read 8 protection bits starting from memory 0010h, the following pseudo-APDU
should be issued:
FF B2 00 10 01h
