PNI RM3000 Evaluation Board - Manual (Page 2)

Table of Contents
1 COPYRIGHT & WARRANTY INFORMATION ............................................................3
2 INTRODUCTION .........................................................................................................4
3 SPECIFICATIONS .......................................................................................................5
3.1 RM3000 EVALUATION BOARD CHARACTERISTICS ..................................5
3.2 TYPICAL OPERATING PERFORMANCE ......................................................6
3.3 DIMENSIONS .................................................................................................8
4 RM3000 EVALUATION BOARD OVERVIEW & SET-UP ...........................................9
4.1 PCB ORIENTATION AND OUTPUT POLARITIES .........................................9
4.2 RM3000 EVALUATION BOARD PINOUT ......................................................9
4.3 SPI INTERFACE OPERATION .....................................................................11
4.4 IDLE MODE ..................................................................................................12
5 OPERATION .............................................................................................................13
5.1 CYCLE COUNT REGISTERS ......................................................................13
5.2 SINGLE-AXIS MEASUREMENT (SAM) OPERATION .................................15
5.2.1 SAM SPI Activity Sequence .............................................................15
5.2.2 SAM Command Byte .......................................................................15
5.2.3 Making a Single-Axis Measurement .................................................16
5.3 MULTI-AXIS MEASUREMENT (MAM) OPERATION ...................................16
5.3.1 MAM SPI Activity Sequence ............................................................17
5.3.2 MAM Command Byte .......................................................................17
5.3.3 MAM Axes Select Byte.....................................................................18
5.3.4 Making a Multi-Axis Measurement ...................................................18
List of Figures
Figure 3-1: Gain vs. Cycle Counts ...........................................................................................6
Figure 3-2: Sample Rate per Axis vs. Cycle Counts ................................................................7
Figure 3-3: Current Consumption vs. Cycle Counts ................................................................7
Figure 3-4: Mechanical Drawing ..............................................................................................8
Figure 4-1: SPI Timing Diagram ............................................................................................12
Figure 5-1: SPI Activity Sequence Diagram for SAM Operation ............................................15
Figure 5-2: SPI Activity Sequence Diagram for MAM Operation ...........................................17
List of Tables
Table 3-1: Absolute Maximum Ratings ....................................................................................5
Table 3-2: Operating Characteristics
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Table 4-1: RM3000 Evaluation Board Pin Assignments ..........................................................9
Table 4-2: SPI Timing Specifications .....................................................................................12
Table 5-1: Cycle Count Register Commands ........................................................................14
Table 5-2: SAM Axis Select Bits ............................................................................................16
Table 5-3: MAM Axes Select Bits ..........................................................................................18