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AS3900
Data Sheet - Contents
Contents
1 General Description.................................................................................................................................................................... 1
2 Key Features ............................................................................................................................................................................... 1
3 Applications ................................................................................................................................................................................ 1
4 Pin Assignment........................................................................................................................................................................... 5
4.1 Pin Description ......................................................................................................................................................................................... 5
5 Absolute Maximum Ratings....................................................................................................................................................... 7
6 Electrical Characteristics........................................................................................................................................................... 8
6.1 Electrical System Specification.................................................................................................................................................................9
6.1.1 General......................................................................................................................................................................................... 9
6.1.2 Modulation Method .......................................................................................................................................................................9
6.1.3 Transmission Frame.....................................................................................................................................................................9
6.1.4 Receiver RX................................................................................................................................................................................10
6.1.5 Transmitter TX............................................................................................................................................................................ 11
6.1.6 Wakeup RX.................................................................................................................................................................................11
6.1.7 RTC Crystal Oscillator 32.768 kHz.............................................................................................................................................11
6.1.8 XREF Crystal Oscillator 27 MHz................................................................................................................................................. 11
6.1.9 Battery Level Detector ................................................................................................................................................................12
6.1.10 Power-On-Reset Generator...................................................................................................................................................... 12
7 Typical Operating Characteristics........................................................................................................................................... 13
8 Detailed Description ................................................................................................................................................................. 14
8.1 Network Management ............................................................................................................................................................................15
8.1.1 Network....................................................................................................................................................................................... 15
8.1.2 Link Manager or Network Manager ............................................................................................................................................ 15
8.1.3 Principle of Communication........................................................................................................................................................ 15
8.2 Operating Modes.................................................................................................................................................................................... 16
8.2.1 Power-down................................................................................................................................................................................ 16
8.2.2 Standby....................................................................................................................................................................................... 16
8.2.3 Sleep...........................................................................................................................................................................................16
8.2.4 Pairing......................................................................................................................................................................................... 16
8.2.5 Wakeup....................................................................................................................................................................................... 16
8.2.6 Data Transmit/Receive ...............................................................................................................................................................17
8.3 Link Manager.......................................................................................................................................................................................... 17
8.3.1 Establishing Network ..................................................................................................................................................................17
8.3.2 Handling the Link Manager......................................................................................................................................................... 18
8.4 Digital Interface....................................................................................................................................................................................... 18
8.4.1 SDI Operation Mode Bits............................................................................................................................................................19
8.4.2 Writing of Data to Addressable Registers (WRITE Mode)..........................................................................................................19
8.4.3 Reading of Data from Addressable Registers (READ Mode).....................................................................................................20
8.4.4 Send Single COMMAND byte..................................................................................................................................................... 21
8.4.5 Read Received Data...................................................................................................................................................................22
8.4.6 Interrupt Interface Description ....................................................................................................................................................22
8.4.7 Microcontroller Clock Interface ...................................................................................................................................................24
8.5 Wakeup Procedure.................................................................................................................................................................................25
8.5.1 Wakeup Receive Mode............................................................................................................................................................... 25
8.5.2 Wakeup Transmit Mode.............................................................................................................................................................. 25
8.6 Pairing ....................................................................................................................................................................................................26
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