User's Manual

ACG HF Multi ISO RFID Reader V1.0
ACG Identification Technologies GmbH 46
12.3 Register Set
The reader has several system flags used for customization purposes. The flags are
stored in its non-volatile EEPROM. The reader accepts changes to these settings
only during the start-up phase. Clearing all RFU bits is recommended in order to
guarantee compatibility with future releases.
The reader can store up to 32 authentication keys internally to login standard mifare®
cards. An additional 32 keys can be stored for DESFire authentication. All keys are
read only and cannot be accessed via the interface lines.