Advanced Card Systems Ltd. ACR3901T-W1, Reference Manual

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ACR3901T-W1 – Reference Manual
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Version 1.02
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Page 25 of 100
Response Data Format (Error)
Offset Field Size Value Description
0
bMessageType
1
97h
-
1
LEN1 LEN2 (wLength)
2 0200h
Number of extra bytes starting from
the next field for this message. It is
expressed in two bytes long. LEN1 is
LSB while LEN2 is MSB.
3 Error Code (bErrorCode) 1 - Error Code. Refer to Appendix A
4 CSUM (wChecksum) 1 -
CSUM means the XOR values of all
bytes in the command
Example:
Sends 600 bytes data to the card
1. Command = 67 07 01 01 ( 261 bytes data ) checksum
Response = 17 02 00 10 checksum
2. Command = 67 07 01 03 ( 261 bytes data ) checksum
Response = 17 02 00 10 checksum
3. Command = 67 50 00 02 ( 78 bytes data ) checksum
Response = 17 04 00 00 90 00 checksum
Receives 600 bytes data from the card
1. Command = 67 09 00 00 00 B0 87 00 00 02 58 checksum
Response = 17 02 01 01 ( 256 bytes data ) checksum
2. Command = 67 02 00 10 checksum
Response = 17 02 01 03 ( 256 bytes data ) checksum
3. Command = 67 02 00 10 checksum
Response = 17 5C 00 02 ( 88 bytes data ) 90 00 checksum