ACR3901U-S1 – Reference Manual
Version 1.09
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Page 94 of 96
SW1
SW2
Where:
SW1, SW2
= 90 00h if no error Fe
= 63 00h if there are no more retries
Note: After SW1SW2 = 9000h has been received, read back the Security Code Attempts
Counter (SCAC) to check whether the VERIFY_USER_CODE is correct. If SCAC is erased
and is equal to “FFh,” the previous verification is successful.
7.2.9.8.
BLOWN_FUSE
This command is used 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.
Command Format (
abData
field in the
PC_to_RDR_XfrBlock
)
Pseudo-APDU
CLA
INS
Error
Counter
LEN
Byte
Address
MEM_L
CODE
Fuse Bit
Addr
(High)
Fuse Bit
Addr
(Low)
State of
FUS Pin
State of
RST Pin
FFh
05h
00h
00h
04h
01h
00h or
01h
Where:
Fuse Bit Addr (2 bytes)
Bit address of the fuse. Please refer to the table below for the
correct value.
State of FUS Pin
State of the FUS pin. Should always be 01h.
State of RST Pin
State of the RST pin. Please refer to below table for the correct
value.