ACS ACR38 - Read_Memory_Without_Protect_Bit_Card

ACR38 Reference Manual version 1.9 February 2006
Response data format
Header Status Data length BYTE 1 … … BYTE N PROT 1 … … PROT L SW1 SW2
LEN
01
H
BYTE x Data read from memory card
PROT y Bytes containing the protection bits of the data bytes read
SW1,SW2 = 90
H
00
H
if no error
The number L of protection bytes returned in the response is determined by the number N of data bytes
read from the card as follows:
L = 1 + INT(N/8)
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
8.2.6.3 READ_MEMORY_WITHOUT_PROTECT_BIT_CARD
Command format
Header Instruction Data length Data
LEN CLA INS Byte Address MEM_L
MSB LSB
01
H
A0
H
00
H
05
H
FF
H
B2
H
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 data to be read from the memory card.
Response data format
Header Status Data length BYTE 1 … … BYTE N SW1 SW2
LEN
01
H
BYTE x Data read from memory card
SW1, SW2 = 90
H
00
H
if no error
 Advanced Card Systems Ltd. Page 28 of 43