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AS3931
Datasheet - Contents
9.4 Test Mode Register
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
............................................................................................................................................................................21
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