User Manual

i
8111A–AVR–05/08
AT86RF231
Table of Contents
Features ..................................................................................................... 1
1 Pin-out Diagram ....................................................................................... 2
1.1 Pin Descriptions .................................................................................................3
1.2 Analog and RF Pins ...........................................................................................5
1.3 Digital Pins .........................................................................................................7
2 Disclaimer ................................................................................................. 9
3 Overview ................................................................................................... 9
4 General Circuit Description ................................................................... 10
5 Application Circuits ............................................................................... 12
5.1 Basic Application Schematic ...........................................................................12
5.2 Extended Feature Set Application Schematic .................................................14
6 Microcontroller Interface ....................................................................... 16
6.1 SPI Timing Description ....................................................................................17
6.2 SPI Protocol .....................................................................................................19
6.3 Radio Transceiver Status information .............................................................24
6.4 Radio Transceiver Identification ......................................................................25
6.5 Sleep/Wake-up and Transmit Signal (SLP_TR) ..............................................27
6.6 Interrupt Logic ..................................................................................................29
7 Operating Modes .................................................................................... 33
7.1 Basic Operating Mode .....................................................................................33
7.2 Extended Operating Mode ...............................................................................47
8 Functional Description .......................................................................... 79
8.1 Introduction - IEEE 802.15.4 - 2006 Frame Format ........................................79
8.2 Frame Check Sequence (FCS) .......................................................................85
8.3 Received Signal Strength Indicator (RSSI) .....................................................89
8.4 Energy Detection (ED) .....................................................................................91
8.5 Clear Channel Assessment (CCA) ..................................................................94
8.6 Link Quality Indication (LQI) ............................................................................99
9 Module Description .............................................................................. 101
9.1 Receiver (RX) ................................................................................................101
9.2 Transmitter (TX) ............................................................................................104