ACS ACR38K Smart Keyboard - Manual (Page 13)

ACR38x (CCID) – Reference Manual [email protected]
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9.0. Commands
9.1. CCID Command Pipe Bulk-OUT Messages
ACR38x (CCID) shall follow the CCID Bulk-OUT Messages as specified in CCID Rev 1.0 Section 4.1.
In addition, this specification defines some extended commands for operating additional features.
This section lists the CCID Bulk-OUT Messages to be supported by ACR38x (CCID).
9.1.1. PC_to_RDR_IccPowerOn
This command activates the card slot and returns ATR data from the card.
Offset Field Size Value Description
0 bMessageType 1 62h
1 dwLength 4 00000000h Size of extra bytes of this message.
2 bSlot 1
Identifies the slot number for this
command.
5 bSeq 1 Sequence number for command.
6 bPowerSelect 1
Voltage that is applied to the ICC:
00h = Automatic Voltage Selection
01h = 5 volts
02h = 3 volts
7 abRFU 2 Reserved for future use.
The response to this command message is the RDR_to_PC_DataBlock response message and the
data returned is the Answer To Reset (ATR) data.
9.1.2. PC_to_RDR_IccPowerOff
This command deactivates the card slot.
Offset Field Size Value Description
0 bMessageType 1 63h
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_SlotStatus message.
9.1.3. PC_to_RDR_GetSlotStatus
This command gets the current status of the slot.
Offset Field Size Value Description
0 bMessageType 1 65h
1 dwLength 4 00000000h Size of extra bytes of this message.