Texas Instruments TRIS TMS37122 User Manual

5
August ’01 Preface
Figure 18: State Diagram of LF Transmission Mode ................................... 32
Figure 19: Memory Organisation.................................................................. 33
Figure 20: Default Memory Content............................................................. 34
Figure 21:VWAKEA Sensitivity Diagram...................................................... 36
Figure 22: System Schematic for Indoor/Outdoor Detection........................ 37
Figure 23: VWAKEB SENSITIVITY Diagram ............................................... 38
Figure 24: Timing Diagram for Test Mode PTx04 ........................................ 43
Figure 25: Timing Diagram for Test Mode PTx07 ........................................ 44
Figure 26Timing Diagram for Test Mode PTx18 .......................................... 46
Figure 27: Timing Diagram for Test Mode PTx14 ........................................ 47
Figure 28: Passive Entry Wake Pattern Detection ....................................... 50
Figure 29: Passive Entry Challenge/Response Timing................................ 51
Figure 30: Passive Start Wake Pattern Detection........................................ 53
Figure 31: Timing Diagram for Battery Backup Function ............................. 55
Figure 32: Timing Diagram of Anti-Collision Function.................................. 57
Figure 33: Measurement System:Timing, Dynamic Current & Sensitivity.... 67
List of Tables
Page
Table 1: Description of the Device’s Pins..................................................... 11
Table 2Default Function Configuration......................................................... 33
Table 3: Wake Sensitivity VWAKEA/1 Options ............................................ 35
Table 4: Passive Start Sensitivity Options ................................................... 37
Table 5: Counter Definition for Pulse Position Demodulation ...................... 39
Table 6: Counter Definition for Pulse Position Demodulation ...................... 41
Table 7: Wake Pattern Waiting Time Options .............................................. 42

Texas Instruments TRIS TMS37122 Specifications

General

Brand	Texas Instruments
Model	TRIS TMS37122
Category	Computer Hardware
Language	English