ACS ACK30 Smart Keyboard - Manual (Page 36)

ACR30 Reference Manual
Version 3.3 January 2009 Page 36 of 44
ACR30
9.2.4.6. PRESENT_CODE (only SLE 4428) (*)
To submit the secret code to the card to enable the write operation with the SLE 4442 card.
The following actions are executed by the ACR30:
- search a '1' bit in the presentation error counter and write the bit to '0'
- present the specified code to the card
- try to erase the presentation error counter
Command format
Instruction
Code Data
length Data
CODE
92
H
02
H
CODE Two bytes secret code (PIN)
Response data format
ERRC
NT CODE
ERRCNT The value of the presentation error counter after the code presentation.
CODE The two bytes secret code read from the card.
If the correct code has been presented to the card, the value of ERRCNT is FF
H
and the
value of CODE is identical to the code data specified in the command.
Note (*) – SAM Reader does not support for memory cards
9.2.5. MCU-based Card
9.2.5.1. RESET
This command powers up the card inserted in the card reader and performs a card reset. If the card is
powered up when the command is being issued, only a reset of the card is carried out. The power
supply to the card is not switched off.
Command format
Instruction
Code
Data length
80
H
00
H