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AS3931

Datasheet - Contents

9.4 Test Mode Register

............................................................................................................................................................................ 21

9.4.1 T0 (Test Mode Enable) .............................................................................................................................................................. 21

9.4.2 T1, T2 (Test Mode Select) ......................................................................................................................................................... 21

9.4.3 T3 ............................................................................................................................................................................................... 22

9.4.4 T4 (RSSI Step Select) ............................................................................................................................................................... 22

9.4.5 T5 (Wake Generator On/Off) ..................................................................................................................................................... 22

9.5 Correlator Mode Register ................................................................................................................................................................... 22

9.5.1 M0 (Correlator Off) ..................................................................................................................................................................... 23

9.5.2 M1 (Single/Double Wake Pattern) ............................................................................................................................................. 23

9.5.3 M2, M3 (Zero-Half-Bit Detection Mode) ..................................................................................................................................... 23

9.5.4 M4 (Detector Time Constant) .................................................................................................................................................... 23

9.5.5 M5 .............................................................................................................................................................................................. 23

10 Extended Operation .............................................................................................................................................................. 24

10.1 Power Management ......................................................................................................................................................................... 24

10.1.1 Sleep Mode .............................................................................................................................................................................. 24

10.1.2 Standby Mode .......................................................................................................................................................................... 24

10.1.3 Receive Mode .......................................................................................................................................................................... 24

10.1.4 Regulator On/Off ...................................................................................................................................................................... 24

10.1.5 Typical Current Consumption in Different Modes .................................................................................................................... 24

10.1.6 RSSI Step ................................................................................................................................................................................ 24

10.1.7 Antenna Rotation ..................................................................................................................................................................... 24

10.2 Input Attenuation and Input Shortcutting .......................................................................................................................................... 24

10.3 WAKE Signal at the RSSI Pin

.......................................................................................................................................................... 25

10.4 Single WAKE Operation ................................................................................................................................................................... 25

10.5 Using the Wake Generator ............................................................................................................................................................... 25

10.6 Direct DATA Mode ............................................................................................................................................................................ 26

10.7 Correlator Modes

............................................................................................................................................................................. 26

10.8 Threshold Adaptation Filter Time Constant ...................................................................................................................................... 26

10.9 RSSI and WAKE Pin Modes

............................................................................................................................................................ 26

11 Package Drawings and Markings

......................................................................................................................................... 27

12 Ordering Information ............................................................................................................................................................. 29