User's Manual

ACR1281U
 Advanced Card Systems Ltd. Page 52 of 81
Pseudo-APDU
Byte Address CLA INS
MSB LSB
MEM_L
FF
H
B2
H
MSB Byte Address = 0000 00A9A8 b is the memory address location of the memory card.
LSB Byte Address = A7A6A5A4 A3A2A1A0 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 eight protection bits starting from memory 0x0010, the
following pseudo-APDU should be issued:
0xFF 0xB1 0x00 0x10 0x01
• Response data format
PROT 1 … … PROT L SW1 SW2
• PROT y Bytes containing the protection bits
• SW1,SW2 = 90 H 00 H if no error
• The arrangement of the protection bits in the PROT bytes is as follows:
PROT 1 PROT 2 ….
P8 P7 P6 P5 P4 P3 P2 P1 P16 P15 P14 P13 P12 P11 P10 P9 .. .. .. .. .. .. P18 P17
• Px is the protection bit of BYTE x in the response data
• ‘0’ byte is write protected
• ‘1’ byte can be written
5.5 Write Memory Card
• Command format
Pseudo-APDU
Byte Address CLA INS
MSB LSB
MEM_L Byte 1 .... .... Byte N
FF
H
D0
H
MSB Byte Address = 0000 00A9A8 b is the memory address location of the memory card.
LSB Byte Address
= A7A6A5A4 A3A2A1A0 b is the memory address location of the memory
card.
MEM_L Length of data to be written to the memory card.