AS3910-BQFP AMSCO [austriamicrosystems AG], AS3910-BQFP Datasheet - Page 4

• Manufacturer Part Number: AS3910-BQFP
• Description: 13.56 MHz RFID Reader IC, ISO-14443 A/B
• Manufacturer: AMSCO [austriamicrosystems AG]

AS3910
Data Sheet - C o n t e n t s
9 Package Drawings and Markings
10 Ordering Information ............................................................................................................................................................. 47
www.austriamicrosystems.com/HF_RFID_Reader/AS3910
8.10 Direct Commands
8.11 Registers
8.12 Typical Operating Sequence
8.13 ISO-14443A SELECT SEQUENCE
8.14 Receiving 4Bit Tag Response Frame
8.15 AM Modulation Depth: Definition and Calibration
8.16 Antenna LC Tank Resonance: Checking and Calibration
8.17 Transparent Mode
8.18 Active Receive – Use in ISO-14443B Anticollision
8.19 ISO-14443B, Reduction of TR0 and TR1 and Suppression of EOF/SOF in PICC Response
8.20 Test Pins ........................................................................................................................................................................................... 44
8.9.9 FIFO Water Level and FIFO Status Register ............................................................................................................................. 20
8.10.1 Set Default ............................................................................................................................................................................... 21
8.10.2 Clear ........................................................................................................................................................................................ 21
8.10.3 Transmit Commands ............................................................................................................................................................... 21
8.10.4 NFC Transmit Commands ....................................................................................................................................................... 21
8.10.5 Mask Receive Data and Unmask Receive Data ...................................................................................................................... 22
8.10.6 AD Convert .............................................................................................................................................................................. 22
8.10.7 Measure RF ............................................................................................................................................................................. 22
8.10.8 Squelch .................................................................................................................................................................................... 22
8.10.9 Clear Squelch .......................................................................................................................................................................... 22
8.10.10 Adjust Regulators .................................................................................................................................................................. 22
8.10.11 Calibrate Modulation Depth ................................................................................................................................................... 23
8.10.12 Calibrate Antenna .................................................................................................................................................................. 23
8.10.13 Check Antenna Resonance ................................................................................................................................................... 23
8.10.14 Clear RSSI ............................................................................................................................................................................. 23
8.10.15 Transparent Mode ................................................................................................................................................................. 23
8.11.1 Main Registers ......................................................................................................................................................................... 24
8.11.2 Configuration Registers ........................................................................................................................................................... 25
8.11.3 Interrupt Register and Associated Registers ........................................................................................................................... 28
8.11.4 A/D Converter Output Register ................................................................................................................................................ 30
8.11.5 Antenna Calibration Registers ................................................................................................................................................. 31
8.11.6 AM Modulation Depth and Antenna Driver Registers .............................................................................................................. 32
8.11.7 NFCIP Field Detection Threshold Register .............................................................................................................................. 33
8.11.8 Regulator Registers ................................................................................................................................................................. 35
8.12.1 ISO-14443 Reader Operation .................................................................................................................................................. 37
8.12.2 NFCIP-1 Operation .................................................................................................................................................................. 37
8.13.1 REQA and WUPA .................................................................................................................................................................... 38
8.13.2 ANTICOLLISION ..................................................................................................................................................................... 39
8.13.3 Collision Detection ................................................................................................................................................................... 39
8.13.4 SELECT ................................................................................................................................................................................... 39
8.15.1 AM Modulation Depth Definition Using Direct Command Calibrate Modulation Depth ........................................................... 40
8.15.2 AM Modulation Depth Definition Using Antenna Driver AM Modulated Level Definition Register (#12) ................................. 41
8.16.1 Check Antenna Resonance ..................................................................................................................................................... 42
8.16.2 Calibrate Antenna Resonance ................................................................................................................................................. 42
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