Single-Chip Low Cost Low Power RF-Transceiver (Rev. A)

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$A Guide to use Macros and Style Files in LATEX Contents$

CC2500Default state when the radio is notreceiving or transmitting. Typ.current consumption: 1.5mA.Used for calibrating frequencysynthesizer upfront (enteringreceive or transmit mode can Manual freq.then be done quicker). synth. calibrationTransitional state. Typ. currentconsumption: 7.4mA.SCALSIDLESPWD or wake-on-radio (WOR)IdleCSn=0CSn=0SXOFFSRX or STX or SFSTXON or wake-on-radio (WOR)SleepCrystaloscillator offLowest power mode. Mostregister values are retained.Typ. current consumption400nA, or 900nA whenwake-on-radio (WOR) isenabled.All register values areretained. Typ. currentconsumption; 0.16mA.Frequency synthesizer is on,ready to start transmitting.Transmission starts veryquickly after receiving theSTX command strobe.Typ.current consumption: 7.4mA.Frequencysynthesizer onSFSTXONFrequencysynthesizer startup,optional calibration,settlingSTXFrequency synthesizer is turned on, can optionally becalibrated, and then settles to the correct frequency.Transitional state. Typ. current consumption: 7.4mA.SRX or wake-on-radio (WOR)STXTXOFF_MODE=01SFSTXON or RXOFF_MODE=01Typ. current consumption:11.1mA at -12dBm output,15.1mA at -6dBm output,21.2mA at 0dBm output.Transmit modeSTX or RXOFF_MODE=10SRX or TXOFF_MODE=11Receive modeTyp. currentconsumption:from 13.3mA (stronginput signal) to 16.6mA(weak input signal).In FIFO-based modes,transmission is turned offand this state entered if theTX FIFO becomes empty inthe middle of a packet. Typ.current consumption: 1.5mA.TX FIFOunderflowTXOFF_MODE=00RXOFF_MODE=00Optional transitional state. Typ.current consumption: 7.4mA.Optional freq.synth. calibrationRX FIFOoverflowIn FIFO-based modes,reception is turned off andthis state entered if the RXFIFO overflows. Typ.current consumption:1.5mA.SFTXSFRXIdleFigure 5: Simplified state diagram, with typical usage and current consumption at 250 kbpsdata rate and MDMCFG2.DEM_DCFILT_OFF = 1 (current optimized)9 Configuration SoftwareCC2500 can be configured using the SmartRF ®Studio software, available for download fromhttp://www.ti.com. The SmartRF ® Studiosoftware is highly recommended for obtainingoptimum register settings, and for evaluatingperformance and functionality. A screenshot ofthe SmartRF ® Studio user interface for CC2500is shown in Figure 6.PRELIMINARY Data Sheet (Rev.1.2) SWRS040A Page 18 of 83
CC2500Figure 6: SmartRF ® Studio user interface10 4-wire Serial Configuration and Data InterfaceCC2500 is configured via a simple 4-wire SPIcompatibleinterface (SI, SO, SCLK and CSn)where CC2500 is the slave. This interface isalso used to read and write buffered data. Alladdress and data transfer on the SPI interfaceis done most significant bit first.All transactions on the SPI interface start witha header byte containing a read/write bit, aburst access bit and a 6-bit address.During address and data transfer, the CSn pin(Chip Select, active low) must be kept low. IfCSn goes high during the access, the transferwill be cancelled. The timing for the addressand data transfer on the SPI interface isshown in Figure 7 with reference to Table 16.When CSn goes low, the MCU must wait untilCC2500 SO pin goes low before starting totransfer the header byte. This indicates thatthe voltage regulator has stabilized and thecrystal is running. Unless the chip is in theSLEEP or XOFF states or an SRES commandstrobe is issued, the SO pin will always go lowimmediately after taking CSn low.Figure 8 gives a brief overview of differentregister access types possible.PRELIMINARY Data Sheet (Rev.1.2) SWRS040A Page 19 of 83
Page 1 and 2: CC2500CC2500Single Chip Low Cost Lo
Page 3 and 4: CC2500Table of ContentsAPPLICATIONS
Page 5 and 6: CC250033 ORDERING INFORMATION......
Page 7 and 8: CC25004 Electrical Specifications4.
Page 9 and 10: CC2500Parameter Min Typ Max Unit Co
Page 11 and 12: CC25004.5 Low Power RC OscillatorTc
Page 13 and 14: CC25005 Pin ConfigurationSIGNDDGUAR
Page 15 and 16: CC25006 Circuit DescriptionRADIO CO
Page 17: CC2500Component Value ManufacturerC
Page 21 and 22: CC250010.1 Chip Status ByteWhen the
Page 23 and 24: CC250010.6 PATABLE AccessThe 0x3E a
Page 25 and 26: CC2500MDMCFG4.MDMCFG4.CHANBW_ECHANB
Page 27 and 28: CC2500Figure 10: Data whitening in
Page 29 and 30: CC250015.3 Packet Filtering in Rece
Page 31 and 32: CC2500Phase shifts are performed wi
Page 33 and 34: CC2500Carrier Sense (CS) can be use
Page 35 and 36: CC25001) Storing codeddata2) Transm
Page 37 and 38: CC2500If the XOSC is forced on, the
Page 39 and 40: CC2500The programmable conditions a
Page 41 and 42: CC2500fcarrier=f2CHANSPC _ E−( FR
Page 43 and 44: CC2500Output power,typical, +25°C,
Page 45 and 46: CC25003530252015Selectivity [dB]105
Page 47 and 48: CC2500GDOx_CFG[5:0]] Description0 (
Page 49 and 50: CC250030.2 Frequency Hopping and Mu
Page 51 and 52: CC250031 Configuration RegistersThe
Page 53 and 54: CC2500Address Register Description
Page 55 and 56: CC250031.1 Configuration Register D
Page 57 and 58: CC25000x07: PKTCTRL1 - Packet autom
Page 59 and 60: CC25000x0B: FSCTRL1 - Frequency syn
Page 61 and 62: CC25000x12: MDMCFG2 - Modem configu
Page 63 and 64: CC25000x15: DEVIATN - Modem deviati
Page 65 and 66: CC25000x17: MCSM1 - Main Radio Cont
Page 67 and 68: CC25000x19: FOCCFG - Frequency Offs
Page 69 and 70:
CC25000x1B: AGCCTRL2 - AGC controlB
Page 71 and 72:
CC25000x1D: AGCCTRL0 - AGC controlB
Page 73 and 74:
CC25000x22: FREND0 - Front end TX c
Page 75 and 76:
CC25000x2C: TEST2 - Various test se
Page 77 and 78:
CC25000x36 (0xF6): WORTIME1 - High
Page 79 and 80:
CC250032.1 Recommended PCB layout f
Page 81 and 82:
CC250034.2 Product Status Definitio
Page 83 and 84:
CC2500AsiaPhone International +886-
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Single-Chip Low Cost Low Power RF-Transceiver (Rev. A)

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