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AS3932

Datasheet - Contents

Contents

1 General Description .................................................................................................................................................................. 1

2 Key Features............................................................................................................................................................................. 1

3 Applications............................................................................................................................................................................... 1

4 Pin Assignments ....................................................................................................................................................................... 5

4.1 TSSOP Package .................................................................................................................................................................................. 5

4.1.1 Pin Descriptions........................................................................................................................................................................... 5

4.2 QFN Package....................................................................................................................................................................................... 6

4.2.1 Pin Descriptions........................................................................................................................................................................... 6

5 Absolute Maximum Ratings ......................................................................................................................................................

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6 Electrical Characteristics...........................................................................................................................................................

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7 Typical Operating Characteristics ...........................................................................................................................................

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8 Detailed Description................................................................................................................................................................

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8.1 Operating Modes................................................................................................................................................................................ 12

8.1.1 Power Down Mode .................................................................................................................................................................... 12

8.1.2 Listening Mode .......................................................................................................................................................................... 12

8.1.3 Preamble Detection / Pattern Correlation .................................................................................................................................. 13

8.1.4 Data Receiving .......................................................................................................................................................................... 13

8.2 System and Block Specification ......................................................................................................................................................... 14

8.2.1 Register Table ........................................................................................................................................................................... 14

8.2.2 Register Table Description and Default Values ......................................................................................................................... 14

8.2.3 Serial Data Interface (SDI)......................................................................................................................................................... 16

8.2.4 SDI Timing ................................................................................................................................................................................. 19

8.3 Channel Amplifier and Frequency Detector........................................................................................................................................ 20

8.3.1 Frequency Detector / AGC ........................................................................................................................................................ 20

8.3.2 Antenna Damper........................................................................................................................................................................ 21

8.4 Channel Selector / Demodulator / Data Slicer.................................................................................................................................... 21

8.5 Correlator............................................................................................................................................................................................ 22

8.6 Wake-up Protocol - Carrier Frequency 125 kHz................................................................................................................................. 23

8.6.1 Without Pattern Detection.......................................................................................................................................................... 23

8.6.2 Single Pattern Detection ............................................................................................................................................................ 24

8.7 False Wake-up Register ..................................................................................................................................................................... 26

8.8 Real Time Clock (RTC)....................................................................................................................................................................... 27

8.8.1 Crystal Oscillator........................................................................................................................................................................ 28

8.8.2 RC-Oscillator ............................................................................................................................................................................. 28

8.8.3 External Clock Source ............................................................................................................................................................... 29

8.9 Channel Selection in Scanning Mode and ON/OFF Mode................................................................................................................. 29

9 Package Drawings and Markings ...........................................................................................................................................

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10 Ordering Information.............................................................................................................................................................

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