ACS AET63 BioTRUSTKey - Manual (Page 21)

P1 APDU parameter byte 1
P2 APDU parameter byte 2
Lc APDU command data length
BYTE x APDU command data
Le Expected APDU response data length (Le = 0 means no data is expected from the
card)
NOTE With the T=0 communication protocol it is not possible to transmit data to the card
and from the card in a single command-response pair. Hence, only either Lc or Le
can be greater than 0 in an EXCHANGE_APDU command when a T=0 card is in the
reader. If both parameters have a value greater than 0, the AET63 does not execute
the command and returns an error status.
Response data format
BYT
E 1
... ... BYT
E N
SW1 SW2
BYTE x Response data from card (if any)
SW1, SW2 Status code returned by the card.
7.4.4. EXCHANGE_T1_FRAME
To exchange an APDU (Application Protocol Data Unit) command/response pair between the MCU
card inserted in the AET63 and the host computer using T1 protocol.
Command format
Instruction
Code
Data length Data
LEN T1 BLOCK FRAME
A1
H
LEN Length of APDU command data, N
DATA T1 Block frame to be sent to the card
Response data format
BYTE 1 ... ... BYTE
N
BYTE x Response T1 Block from card (if any)
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Document Title Here AET63 Reference Manual
Version 2.2
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