CC1100-RTR1 datasheet(42/100 Pages) TI1

42 / 100 page

CC1100

SWRS038D

Page 42 of 92

Radio Control

19,20

13,14,15

IDLE

CALIBRATE

MANCAL

3,4,5

SETTLING

9,10,11

RX_OVERFLOW

TX_UNDERFLOW

RXTX_SETTLING

FSTXON

SFSTXON

FS_AUTOCAL = 00 | 10 | 11

SRX | STX | SFSTXON | WOR

SRX | WOR

STX

TXFIFO_UNDERFLOW

STX | RXOFF_MODE = 10

RXOFF_MODE = 00

FS_AUTOCAL = 10 | 11

SFTX

SRX | TXOFF_MODE = 11

SIDLE

SCAL

CAL_COMPLETE

FS_AUTOCAL = 01

SRX | STX | SFSTXON | WOR

RXFIFO_OVERFLOW

CAL_COMPLETE

SFRX

CALIBRATE

IDLE

TXOFF_MODE = 00

FS_AUTOCAL = 10 | 11

RXOFF_MODE = 00

FS_AUTOCAL = 00 | 01

TXOFF_MODE = 00

FS_AUTOCAL = 00 | 01

TXOFF_MODE = 10

RXOFF_MODE = 11

SFSTXON | RXOFF_MODE = 01

TXRX_SETTLING

SRX | STX | SFSTXON | WOR

SLEEP

SPWD | SWOR

XOFF

SXOFF

CSn = 0

CSn = 0 | WOR

( STX | SFSTXON ) & CCA

RXOFF_MODE = 01 | 10

TXOFF_MODE=01

FS_WAKEUP

6,7

SRX

Figure 16: Complete Radio Control State Diagram

CC1100 has a built-in state machine that is

used to switch between different operational

states (modes). The change of state is done

either by using command strobes or by

internal events such as TX FIFO underflow.

A simplified state diagram, together with

typical usage and current consumption, is

shown in Figure 5 on page 23. The complete

radio control state diagram is shown in Figure

16. The numbers refer to the state number

readable in the MARCSTATE status register.

This register is primarily for test purposes.

19.1 Power-On Start-Up Sequence

When the power supply is turned on, the

system must be reset. This is achieved by one

of the two sequences described below, i.e.

automatic power-on reset (POR) or manual

reset.

After the automatic power-on reset or manual

reset it is also recommended to change the

signal that is output on the GDO0 pin. The

default setting is to output a clock signal with a

frequency of CLK_XOSC/192, but to optimize

CC1100-RTR1 Datasheet(PDF) 42 Page - Texas Instruments

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