ACR1255U-J1 – Reference Manual info@acs.com.hk
Version V1.01 www.acs.com.hk
Page 2 of 73
Table of Contents
1.0. Introduction .............................................................................................................5
1.1. Symbols and Abbreviations...................................................................................................5
2.0. Features ...................................................................................................................6
3.0. System Block Diagram............................................................................................7
4.0. Hardware Design...................................................................................................10
4.1. Battery..................................................................................................................................10
4.1.1. Battery charging..........................................................................................................10
4.1.2. Battery life ...................................................................................................................10
4.2. Bluetooth Interface...............................................................................................................10
4.3. USB Interface ......................................................................................................................10
4.3.1. Communication Parameters .......................................................................................10
4.3.2. Endpoints ....................................................................................................................11
4.4. NFC Interface ......................................................................................................................11
4.4.1. Carrier Frequency.......................................................................................................11
4.4.2. Card Polling.................................................................................................................11
4.5. User Interface ......................................................................................................................11
4.5.1. Keys ............................................................................................................................11
4.5.2. Mode Selection Switch................................................................................................12
4.5.3. Status LED..................................................................................................................13
4.5.4. Buzzer.........................................................................................................................14
5.0. Software Design ....................................................................................................15
5.1. Bluetooth Connection Flow..................................................................................................15
5.2. Profile Selection...................................................................................................................16
5.3. Authentication......................................................................................................................17
5.4. Communication Profile.........................................................................................................19
5.5. Frame Format......................................................................................................................19
5.5.1. Data Frame Format.....................................................................................................19
5.6. Bluetooth Communication Protocol .....................................................................................20
5.6.1. Card Power On ...........................................................................................................21
5.6.2. Card Power Off ...........................................................................................................22
5.6.3. Get Slot Status............................................................................................................23
5.6.4. APDU Command.........................................................................................................24
5.6.5. Notify Card Status Command.....................................................................................25
5.6.6. Hardware Error Response ..........................................................................................26
5.6.7. Escape Command.......................................................................................................27
5.7. Mutual Authentication and Encryption Protocol...................................................................29
5.7.1. Bluetooth Authentication Program Flow......................................................................29
5.7.2. SPH_to_RDR_ReqAuth..............................................................................................29
5.7.3. RDR_to_SPH_AuthRsp1............................................................................................30
5.7.4. SPH_to_RDR_AuthRsp..............................................................................................31
5.7.5. RDR_to_SPH_AuthRsp2............................................................................................32
5.7.6. RDR_to_SPH_ACK (Error handling) ..........................................................................33
6.0. Host Programming (PC-linked) API......................................................................34
6.1. PC/SC API...........................................................................................................................34
6.1.1. SCardEstablishContext...............................................................................................34
6.1.2. SCardListReaders.......................................................................................................34
6.1.3. SCardConnect.............................................................................................................34
6.1.4. SCardControl ..............................................................................................................34
6.1.5. ScardTransmit.............................................................................................................34
6.1.6. ScardDisconnect.........................................................................................................34
6.1.7. APDU Flow..................................................................................................................35
6.1.8. Escape Command Flow..............................................................................................36
6.2. Contactless Smart Card Protocol ........................................................................................37
