ACS ACR38K Smart Keyboard - Manual (Page 15)

ACR38x (CCID) – Reference Manual [email protected]
Version 6.04 www.acs.com.hk
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9.1.6. PC_to_RDR_ResetParameters
This command resets slot parameters to the default value.
Offset Field Size Value Description
0 bMessageType 1 6Dh
1 DwLength 4 00000000h 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 AbRFU 3 Reserved for future use.
The response to this message is the RDR_to_PC_Parameters message.
9.1.7. 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