AS3909 Просмотр технического описания (PDF) - austriamicrosystems AG
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AS3909 Datasheet PDF : 77 Pages
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AS3909/AS3910 – 76
Reference Guide
25 Reading of Data from Addressable Registers (READ
Mode)
25 Sending Direct Commands
26 Loading Transmitting Data into FIFO
27 Reading Received Data from FIFO
27 Interrupt Interface
28 FIFO Water Level and FIFO Status Register
28 Direct Commands
29 Set Default
30 Clear
30 Transmit Commands
30 NFC Transmit Commands
31 Mask Receive Data and Unmask Receive Data
31 AD Convert
32 Measure RF
32 Squelch
32 Clear Squelch
32 Adjust Regulators
33 Calibrate Modulation Depth
33 Calibrate Antenna
33 Check Antenna Resonance
33 Clear RSSI
34 Transparent Mode
34 Registers
34 Main Registers
36 Configuration Registers
41 Interrupt Register and Associated Registers
44 A/D Converter Output Register
45 Antenna Calibration Registers
46 AM Modulation Depth and Antenna Driver Registers
48 NFCIP Field Detection Threshold Register
50 Regulator Registers
52 Receiver State Display Register
54 Typical Operating Sequence
54 ISO-14443 Reader Operation
55 Transmit and Receive In Case Data Packet is Longer Than
FIFO
55 NFCIP-1 Operation
55 NFCIP Target
56 NFCIP Initiator
57 ISO-14443A SELECT SEQUENCE
57 REQA and WUPA
57 ANTICOLLISION
58 Collision Detection
59 SELECT
59 Receiving 4-Bit Tag Response Frame
60 AM Modulation Depth: Definition and Calibration
60 AM Modulation Depth Definition Using Direct Com-
mand Calibrate Modulation Depth
61 Execution of Direct Command Calibrate Modulation
Depth
62 AM Modulation Depth Definition Using Antenna Driver
AM Modulated Level Definition Register (#12)
63 Antenna LC Tank Resonance: Checking and Calibration
ams Datasheet, Confidential: 2013-Oct [3-02]
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