CC2400-RTR1 datasheet(36/83 Pages) TI

36 / 83 page

CC2400

SWRS042A

Page 36 of 83

26 Power Management Flow Chart

CC2400 offers great flexibility for power

management in order to meet strict power

consumption requirements in battery-

operated applications.

After reset the

CC2400 is in Power Down

mode. All configuration registers can then

be programmed in order to make the chip

ready to operate at the correct frequency,

data rate and mode. Due to the very fast

start-up time, the

CC2400 can remain in

Power Down until a transmission session

is requested.

Figure 16 shows a typical power-on and

initializing sequence. After this initializing

sequence the chip is in Power Down mode

with very low power consumption and the

crystal oscillator is not running.

Figure 17 shows the sequence for

entering RX or TX mode. The flow chart

illustrates the simplest way to send a data

packet

using

the

strobe

command

registers. After one or more data packets

are transmitted or received, the chip is

again set to Power Down mode.

During chip initialization a few registers

need to be programmed to other values

than their reset values. SmartRF

® Studio

should be used to find/generate the

required configuration data for these

registers.

Program all registers that are

different from reset value

Reset:

MAIN = 0x0000

MAIN = 0x8000

Power off

Supply power turned on

Power Down

Figure 16. Initializing sequence

CC2400-RTR1 Datasheet(PDF) 36 Page - Texas Instruments

CC2400-RTR1 Datasheet(HTML) 36 Page - Texas Instruments

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