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AS3911 Datasheet(PDF) 157 Page - ams AG

Part # AS3911
Description  NFC Initiator / HF Reader IC
PDF  159 Pages
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Manufacturer  AMSCO [ams AG]
Direct Link  http://www.ams.com
Logo AMSCO - ams AG

AS3911 Datasheet(HTML) 157 Page - ams AG

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ams Datasheet
Page 157
[v2-11] 2016-Jun-13
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AS3911 − Content Guide
33
Phase and Amplitude Detector
33
Phase Detector
34
Amplitude Detector
34
External Field Detector
34
Peer Detection Threshold
35
Collision Avoidance Threshold
35
Power Supply System
37
VSP_RF Regulator
38
VSP_A and VSP_D Regulators
38
Power-Down Support Block
38
Measurement of Supply Voltages
38
Communication to External Microcontroller
39
Serial Peripheral Interface (SPI)
41
Writing of Data to Addressable Registers (Write Mode)
42
Reading of Data from Addressable Registers (Read
Mode)
43
Loading Transmitting Data into FIFO
44
Reading Received Data from FIFO
45
Direct Command Mode
45
Direct Command Chaining
46
SPI Timing
47
Interrupt Interface
48
FIFO Water Level and FIFO Status Registers
49
Pin MCU_CLK
50
Direct Commands
52
Set Default
53
Clear
53
Transmit Commands
54
NFC Field ON Commands
55
Go to Normal NFC Mode
55
Analog Preset
57
Mask Receive Data and Unmask Receive Data
57
Measure Amplitude
58
Squelch
59
Reset Rx Gain
59
Adjust Regulators
60
Calibrate Modulation Depth
60
Calibrate Antenna
60
Measure Phase
61
Clear RSSI
61
Transparent Mode
61
Calibrate Capacitive Sensor
62
Measure Capacitance
62
Measure Power Supply
62
Start Timers
62
Test Access
62
Registers
67
IO Configuration Register 1
68
IO Configuration Register 2
69
Operation Control Register
70
Mode Definition Register
71
Bit Rate Definition Register
73
ISO14443A and NFC 106kbit/s Settings Register
75
ISO14443B Settings Register 1



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