Single-Chip Low Cost Low Power RF-Transceiver (Rev. B
Single-Chip Low Cost Low Power RF-Transceiver (Rev. B
Single-Chip Low Cost Low Power RF-Transceiver (Rev. B
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CC250019 Radio ControlSIDLECAL_ COMPLETESPWD | SWORSLEEP0MANCAL3,4,5SCALIDLE1CSn = 0 | WORSXOFFSRX | STX | SFSTXON | WORCSn = 0XOFF2FS_ WAKEUP6,7FS_ AUTOCAL = 01&SRX | STX | SFSTXON | WO<strong>RF</strong>S_ AUTOCAL = 00 | 10 | 11&SRX | STX | SFSTXON | WORCALIBRATE8SFSTXONSETTLING9,10,11CAL_ COMPLETEFSTXON18STXSRX | WORSTXTXOFF_ MODE=01SFSTXON | RXOFF_ MODE = 01SRXSTX | RXOFF_ MODE = 10RXTX_ SETTLING( STX | SFSTXON ) & CCA21|TXOFF_ MODE = 10TXRXOFF_ MODE = 01 | 10RX19,2013,14,15RXOFF_ MODE = 11SRX | TXOFF_ MODE = 11TXRX_ SETTLING16TXFIFO_ UNDE<strong>RF</strong>LOWTXOFF_ MODE = 00&FS_ AUTOCAL = 10 | 11RXOFF_ MODE = 00&FS_ AUTOCAL = 10 | 11RXFIFO_ OVE<strong>RF</strong>LOWTXFIFO_UNDE<strong>RF</strong>LOW22TXOFF_ MODE = 00&FS_ AUTOCAL = 00 | 01CALIBRATE12RXOFF_ MODE = 00&FS_ AUTOCAL = 00 | 01RXFIFO_OVE<strong>RF</strong>LOW17SFTXSFRXIDLE1Figure 15: Complete Radio Control State DiagramCC2500 has a built-in state machine that isused to switch between different operationstates (modes). The change of state is doneeither by using command strobes or byinternal events such as TX FIFO underflow.A simplified state diagram, together withtypical usage and current consumption, isshown in Figure 5 on page 16. The completeradio control state diagram is shown in Figure15. The numbers refer to the state numberreadable in the MARCSTATE status register.This register is primarily for test purposes.19.1 <strong>Power</strong>-On Start-Up SequenceWhen the power supply is turned on, thesystem must be reset. One of the following twosequences must be followed: Automaticpower-on reset (POR) or manual reset.SWRS040B Page 40 of 92
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