AT86RF230 datasheet(21/98 Pages) ATMEL

21 / 98 page

5131D-ZIGB-12/03/07

AT86RF230

7 Operating Modes

7.1 Basic Operating Mode

This section summarizes all states to provide the basic functionality of the AT86RF230,

such as receiving and transmitting frames, and powering up and down. The Basic

Operating Mode is designed for IEEE 802.15.4 applications; the corresponding radio

transceiver states are shown in Figure 7-1.

Figure 7-1. Basic Operating Mode State Diagram (for State Transition Timing Data Refer to Table 7-1)

RX_ON

PLL_ON

TRX_OFF

(Clock State)

XOSC=ON

Pull=OFF

P_ON

(Power-on after VDD)

XOSC=ON

Pull=ON

SLEEP

(Sleep State)

XOSC=OFF

Pull=OFF

(all states except P_ON)

FORCE_TRX_OFF

(all states except SLEEP)

SFD

Detected

Frame

End

Frame

End

BUSY_TX

(Transmit State)

PLL_ON

(PLL State)

RX_ON

(Rx Listen State)

BUSY_RX

(Receive State)

RX_ON_NOCLK

(Rx Listen State)

CLKM=OFF

TX_START

SLP_TR=H

RESET

RST=H

(from all states)

RST=L

Legend:

Blue:

SPI Write to Register TRX_STATE (0x02)

Red:

Control signals via IC Pin

Green:

Event

Basic Operating Mode States

State transition number, timing data in Table 7-1

7.1.1 State Control

The radio transceiver state is controlled by two signal pins (SLP_TR,

RST ) and the

the radio transceiver status from register 0x01 (TRX_STATUS).

If TRX_STATUS = 0x1F (STATE_TRANSITION_IN_PROGRESS) the AT86RF230 is

on a state transition. Do not try to initiate a further state change while the radio

transceiver is in STATE_TRANSITION_IN_PROGRESS.

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