Advanced Card ACR39x, Reference Manual

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ACR39x – Reference Manual
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Version 1.03
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Page 14 of 35
7.1.7. PC_to_RDR_SetParameters
This command sets the slot parameters.
Offset Field Size Value Description
0 bMessageType 1 61h
1 dwLength 4
Size of extra bytes of this
message.
5 bSlot 1
Identifies the slot number for this
command.
6 bSeq 1 Sequence number for command.
7 bProtocolNum 1
Specifies what protocol data
structure follows:
00h – Structure for protocol T=0
01h – Structure for protocol T=1
The following values are reserved
for future use:
80h – Structure for 2-wire protocol
81h – Structure for 3-wire protocol
82h – Structure for I2C protocol
8 abRFU 2 Reserved for future use.
10 abProtocolDataStructure
Byte
array
Protocol Data Structure.
Protocol Data Structure for Protocol T=0 ( dwLength =00000005h)
Offset Field Size Value Description
10 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.
11 bmTCCKST0 1
B0 – 0b, B7-2 – 000000b
B1 – Convention used (b1=0 for direct, b1=1
for inverse)
Note: The CCID ignores this bit.
12 bGuardTimeT0 1
Extra guard time between two characters.
Add 0 to 254 etu to the normal guard time of
12 etu. FFh is the same as 00h.
13 bWaitingIntegerT0 1 WI for T=0 used to define WWT.