AT86RF211DAI-R datasheet(32/48 Pages) ATMEL

32 / 48 page

AT86RF211

1942C–WIRE–06/02

Frequency Registers

Note:

1. F0, F1, F2 and F3 registers must be programmed before using the device.

• Frequency Registers Selection

The FSK modulation is completely integrated. Two registers have to be programmed

(default F0 and F1) to allow "0" and "1" transmission.

The frequency register selection depends on the control register programming and on

the DATAMSG pin:

Table 9. Frequency Registers

Name

F0, F1, F2, F3

nbit

31-0

Name

Number

of bits

Comments

Frequency code value F0

default register in TX mode ("0" code in FSK modulation).

Frequency code value F1

default register in TX mode ("1" code frequency in FSK modulation).

Frequency code value F2

default register in RX mode.

Frequency code value F3

There is no simple relationship between frequency registers and the exact frequency. Atmel

provides a tool to program them on a production bench.

RXTX

RXFS

TXFS

DATAMSG

Mode

Receive LO is F0

Receive LO is F1

Receive LO is F2

Receive LO is F3

Transmit "0" on F0

Transmit "1" on F1

Transmit "0" on F2

Transmit "1" on F3

AT86RF211DAI-R Datasheet(PDF) 32 Page - ATMEL Corporation