Advanced Card Systems ACR3901U-S1, Reference Manual

Page: 29 / 96

ACR3901U-S1 – Reference Manual
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Version 1.09
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Page 29 of 96
6.1.5.7. Card Set Parameters
This command changes the parameters for the inserted card after power on.
Command Format
Offset Field Size Value Description
0 bMessageType 1 61h -
1 LEN1 LEN2 (wLength) 2 -
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
abData1
ProtocolNum 1 -
Card Protocol data structure:
00h = Structure for protocol T=0
01h = Structure for protocol T=1
4 ProtocolDataStructure N - Protocol Data Structure
4+N CSUM (wChecksum) 1 -
CSUM means the XOR values of
all bytes in the command
Response Data Format
Offset Field Size Value Description
0 bMessageType 1 16h Escape Response Header
1 LEN1 LEN2 (wLength) 2 -
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
abData2
ProtocolNum
1 -
Card Protocol data structure:
00h = Structure for protocol T=0
01h = Structure for protocol T=1
4 ProtocolDataStructure N - Protocol Data Structure
4+N CSUM (wChecksum) 1 -
CSUM means the XOR values of
all bytes in the command
Protocol Data Structure for Protocol T=0 (ProtocolNum = 0, wLength = 0700h)
Offset Field Size Value Description
4
bmFindexDindex
1 -
B7-4 – FI – Index into the table 7 in
ISO/IEC 7816-3:1997 selecting a clock
rate conversion factor.
B3-0 – DI – Index into the table 8 in
ISO/IEC 7816-3:1997 selecting a baud
rate conversion factor.