Compal Electronics Inc PICONODE Manual De Usuario
PicoNode Integration Specification
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Contents
1 Overview ........................................................................................................................1
1.1 picoNode .......................................................................................................................... 1
2 DC and AC Characteristics ................................................................................................ 2
2.1 Absolute Maximum Ratings............................................................................................... 2
2.2 Recommended Operating Conditions ................................................................................ 2
3 Electrical Interface ...........................................................................................................5
3.1 Signal Descriptions ........................................................................................................... 7
4 Applications .................................................................................................................. 11
4.1 Powered Operating Mode ............................................................................................... 11
4.2 Battery Operated Mode .................................................................................................. 11
5 SPI Interface and Sequences ........................................................................................... 14
5.1 SPI System Interface Overview ........................................................................................ 14
5.2 SPI Mode and Timing ...................................................................................................... 15
5.3 Host Initialization ............................................................................................................ 15
5.4 Startup (Power On) Sequence ......................................................................................... 15
5.5 Wake Sequence .............................................................................................................. 17
5.6 Host-Driven Reset Sequence ........................................................................................... 19
5.7 Host MRQ Release/picoNode Allowed to Sleep Sequence ................................................. 20
6 Power States ................................................................................................................. 21
6.1 Operating States ............................................................................................................ 21
7 SPI Messaging Protocol .................................................................................................. 23
7.1 Arbitration ...................................................................................................................... 23
7.2 Message Protocol ........................................................................................................... 23
7.3 Host Interface SPI Bus State Machine .............................................................................. 26
7.4 SPI Bus Timing Example .................................................................................................. 27
7.5 Host Message SPI Example .............................................................................................. 28
7.6 Host Message “Connect” SPI Example ............................................................................. 30
8 picoNode Provisioning ................................................................................................... 33
9 Antenna Diversity .......................................................................................................... 34
9.1 Antenna Design Considerations ....................................................................................... 34