Advanced Card Systems Limited ACR1281U 用户手册
ACR1281U
Advanced Card Systems Ltd.
Page 69 of 81
9.7 Verify Security Code
To submit Security Code (2 bytes) to the inserted card. Security Code is to enable the memory
access of the card.
The following actions are executed:
access of the card.
The following actions are executed:
- present the specified code to the card
- search a '1' bit in the presentation error counter and write the bit to '0'
- erase the presentation error counter. The Security Code Attempts Counter can be erased
when the submitted code is correct.
• Command format
Pseudo-APDU
CODE
CLA
INS
Error Counter
LEN
Byte
Address
MEM_L
Byte 1
Byte 2
FF
H
20
H
08
H
0A
H
02
H
Error Counter LEN
Length of presentation error counter in bits.
Byte Address
Byte address of the key in the card.
CODE
2 bytes Security Code
• Response data format
SW1
SW2
• SW1, SW2
= 90 00 if no error.
= 63 00 if there is no more retry chance
= 63 00 if there is no more retry chance
Note: After SW1SW2 = 90 00 has been received, read back the Security Code Attempts Counter
(SCAC) can check whether the Verify User Code is correct. If SCAC is erased and equals to “FF”,
the previous verification is success.
(SCAC) can check whether the Verify User Code is correct. If SCAC is erased and equals to “FF”,
the previous verification is success.
9.8 Blown Fuse
To blow the fuse of the inserted card. The fuse can be EC_EN Fuse, EC2EN Fuse, Issuer Fuse or
Manufacturer’s Fuse.
Note: The blowing of Fuse is an irreversible process.
Manufacturer’s Fuse.
Note: The blowing of Fuse is an irreversible process.
• Command format
Pseudo-APDU
CODE
CLA
INS
Error Counter
LEN
Byte
Address
MEM_L
Fjuse Bit Addr
(High)
Fuse Bit Addr
(Low)
State of FUS
Pin
State of RST
Pin
FF
H
05
H
00
H
00
H
04
H
01
H
00
H
or 01
H
Fuse Bit Addr (2 bytes)
Bit address of the fuse. Please refer to the table below for the
correct value.
correct value.
State of FUS Pin
State of the FUS pin. Should be 0x01 always.