CC2400 Chipcon AS, CC2400 Datasheet - Page 33

• Manufacturer Part Number: CC2400
• Description: 2.4 GHz RF Transceiver
• Manufacturer: Chipcon AS

Chipcon AS
NO: SFSON
SmartRF
Data is received. FIFO should
NO: SRFOFF
be read if buffered mode is
®
Figure 16. Sequence for activating RX or TX mode
CC2400 PRELIMINARY Datasheet (rev. 1.1), 2003-10-02
down?*
power
used
Go to
YES: SXOSCOFF
RX: SRX
Wait until crystal oscillator is
(XOSC and PLL is running)
The PLL and filters are
(XOSC is running)
(Power Down)
Power Down
RX or TX?
calibrated
FSON
stable
IDLE
PD
SmartRF
SXOSCON
SFSON
YES: SXOSCOFF
TX
should be filled if buffered
Data is transmitted. FIFO
*Go to PD state if the crystal oscillator
should be shut off in order to save
power. Go back to IDLE if a new
packet shall be received/transmitted
quickly. Or go back to FSON if
changing fast between RX and TX
mode.
Wait for the specified crystal
oscillator start-up time, or poll the
XOSC16M_STABLE bit
Write data to FIFO
mode is used
®
down?*
power
Go to
NO: SRFOFF
TX: STX
CC2400
NO: SFSON
Page 33 of 73