Present_code (only sle 4428) (*), Mcu-based card, Reset – ACS ACK30 Smart Keyboard User Manual

Page 36: Acr30

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

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

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