PNI RM3100 Evaluation Board - Manual (Page 2)

PNI Sensor Corporation Doc 1017252 r02
RM3100 Evaluation Board User Manual Page 1 of 33
Table of Contents
1 COPYRIGHT & WARRANTY INFORMATION ............................................................ 3
2 INTRODUCTION .......................................................................................................... 4
3 SPECIFICATIONS ....................................................................................................... 5
3.1 RM3100 EVALUATION BOARD CHARACTERISTICS .................................. 5
3.2 DIMENSIONS .................................................................................................. 7
4 RM3100 EVALUATION BOARD OVERVIEW & SET-UP ........................................... 8
4.1 PCB ORIENTATION AND OUTPUT POLARITIES ......................................... 8
4.2 LOCAL MAGNETIC FIELD CONSIDERATIONS ............................................ 8
4.3 RM3100 EVALUATION BOARD PIN ASSIGNMENTS ................................... 9
4.3.1 General Purpose Pins ........................................................................ 9
4.3.2 SPI Pins ............................................................................................ 10
4.3.3 I
2
C Pins ............................................................................................. 11
4.4 SPI TIMING REQUIREMENTS ..................................................................... 12
4.5 I
2
C REQUIREMENTS .................................................................................... 14
4.5.1 I
2
C Register Write ............................................................................. 14
4.5.2 I
2
C Register Read ............................................................................. 15
5 RM3100 EVALUATION BOARD OPERATION ......................................................... 16
5.1 SET THE CYCLE COUNT REGISTERS (0X04 – 0X09) .............................. 17
5.2 INITIATE CONTINUOUS MEASUREMENT MODE (0X01) .......................... 18
5.2.1 Setting the CMM Update Rate with TMRC (0x0B) ........................... 19
5.2.2 Alarm Mode ...................................................................................... 20
5.3 INITIATE A SINGLE MEASUREMENT (0X00) ............................................. 23
5.4 CONFIRM NEW DATA READY .................................................................... 24
5.4.1 STATUS Register (0x34) .................................................................. 24
5.5 READ THE MEASUREMENT RESULTS ...................................................... 24
5.6 TROUBLESHOOTING AND GENERAL INFORMATION ............................. 25
5.6.1 BIST Register (0x33) ........................................................................ 25
5.6.2 HSHAKE Register (0x35) ................................................................. 26
5.6.3 REVID Register (0x36) ..................................................................... 27
5.7 EXAMPLES USING THE SPI INTERFACE .................................................. 27
5.7.1 Set the Cycle Count Registers ......................................................... 27
5.7.2 Making and Reading Measurements ................................................ 28
5.8 EXAMPLES USING THE I
2
C INTERFACE ................................................... 30
5.8.1 Set the Cycle Count Registers ......................................................... 30
5.8.2 Initiate a Single Measurement .......................................................... 31
5.8.3 Initiate Continuous Measurement Mode ........................................... 31
5.8.4 Read the Measurement Results ....................................................... 31