© Semtech 2006

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9

DP1205

433/868/915 MHz RF Modules

7

OPERATING MODES

By default, the serial control interface is used for configuration. It is also possible to change between the four modes

(sleep, stand-by, receive, transmit) by using the two-bit signal SW(1:0). This option is enabled by setting the bit

MCParam_Select_mode to ‘1’ in the configuration register.

If MCParam_Select_mode is low, the modes are defined by the register through the SPI_CONFIG interface and SW(1:0)

may be used as an output to control, for example, an antenna switch.

MCParam_Select_mode

Bit 5, Address 0

SWITCH (pin)

SW(1:0)

MCParam_chip_mode

Bit 7-6, Address 0

0

Set in Output

sleep mode

-> SW(1:0) = ”00”

receiver mode

-> SW(1:0) = “01”

transmitter mode -> SW(1:0) = “10”

stand-by mode -> SW(1:0) = “00”

00 -> sleep mode

01 -> receive mode

10 -> transmit mode

11 -> stand-by mode

1

SW(1:0) = 00 -> sleep mode

SW(1:0) = 01 -> receive mode

SW(1:0) = 10 -> transmit mode

SW(1:0) = 11 -> stand-by mode

x

For more information about the modes of operation, please refer to the XE1205 Datasheet on the Semtech website