ACS ACR38K Smart Keyboard - Manual (Page 39)

ACR38x (CCID) – Reference Manual [email protected]
Version 6.04 www.acs.com.hk
Page 39 of 58
Where:
Px is the protection bit of BYTE x in the response data
‘0’ byte is write protected
‘1’ byte can be written
9.3.6.5. WRITE_MEMORY_CARD
Command Format (abData field in the PC_to_RDR_XfrBlock)
Pseudo-APDU
CLA INS P1 Byte Address MEM_L Byte 1 .... .... Byte N
FFh D0h 00h
Where:
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 data to be written to the memory card
Byte x Data to be written to the memory card
Response Data Format (abData field in the RDR_to_PC_DataBlock)
SW1 SW2
Where:
SW1 SW2 = 90 00h if no error
9.3.6.6. WRITE_PROTECTION_MEMORY_CARD
Each byte specified in the command is internally in the card compared with the byte stored at the
specified address and if the data match, the corresponding protection bit is irreversibly programmed to
‘0’.
Command Format (abData field in the PC_to_RDR_XfrBlock)
Pseudo-APDU
CLA INS P1 Byte Address MEM_L Byte 1 .... .... Byte N
FFh D1h 00h
Where:
Byte Address = 000A
4
A
3
A
2
A
1
A
0
b (00h to 1Fh) is the protection memory address location of
the memory card
MEM_L Length of data to be written to the memory card
Byte x Byte values to be compared with the data in the card starting at Byte
Address. BYTE 1 is compared with the data at Byte Address; BYTE N is
compared with the data at (Byte Address+N-1).