User guide

ACR83 – Reference Manual [e-mail]
Version 1.05
www.acs.com.hk
Page 6 of 49
3.0. Supported Card Types
The ACR83 supports MCU cards with either T=0 or T=1 protocol. The card ATR indicates the specific
operation mode (TA2 present; bit b5 of TA2 must be 0) and when that the particular mode is not
supported by the ACR83 PINeasy, the reader will reset the card to a negotiable mode. If the card
cannot be set to negotiable mode, the reader will then reject the card.
When the card ATR indicates the negotiable mode (TA2 not present) and communication parameters
other than the default parameters, the ACR83 will execute the PPS and try to use the communication
parameters that the card suggested in its ATR. If the card does not accept the PPS, the reader will
use the default parameters (F=372, D=1).
For the meaning of the aforementioned parameters, please refer to ISO 7816 Part 3.