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CC2400-RTR1 数据表(PDF) 14 Page - Texas Instruments |
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CC2400-RTR1 数据表(HTML) 14 Page - Texas Instruments |
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14 / 84 page  CC2400 SWRS042A Page 14 of 83 Pin no. Pin name Pin type Description 11 NC --- No Connect 12 NC --- No Connect 13 NC --- No Connect 14 AVDD_RF2 Power (Analog) Power supply for receive and transmit mixers 15 AVDD_IF2 Power (Analog) Power supply for transmit IF chain 16 AVDD_ADC Power (Analog) Power supply connection of ADCs and DACs 17 DVDD_ADC Power (Digital) Power supply for digital part of receive ADCs 18 DGND_GUARD Ground (Digital) Ground connection for digital noise isolation 19 DGUARD Power (Digital) Power supply connection for digital noise isolation 20 BT/GR Digital Input Selection of Built-in-Test or Generic Radio (normal operation). Connect to ground for normal operation (NOTE: For Chipcon internal use only.) 21 GIO1 Digital I/O General digital I/O pin. Configure as output when not used. See Table 18 22 DGND Ground (Digital) Ground connection for digital modules 23 DSUB_PADS Ground (Digital) Substrate connection for digital I/O’s 24 DSUB_CORE Ground (Digital) Substrate connection for digital modules 25 DVDD3.3 Power (Digital) Power supply for digital I/O’s 26 DVDD1.8 Power (Digital) Power supply for digital modules 27 RX Digital Input Strobe signal for RX mode. Connect to ground when not used. 28 TX Digital I/O Strobe signal for TX mode. Connect to ground when not used. 29 DIO/PKT Digital I/O Data input/output in un-buffered mode or packet handling control signal. Configure as output when not used. 30 DCLK/FIFO Digital Output Data clock output signal in un-buffered mode or FIFO control signal. Leave open when not used. 31 CSn Digital Input SPI: Chip Select 32 SCLK Digital Input SPI: Serial data clock 33 SI Digital Input SPI: Slave Input 34 SO Digital Output SPI: Slave Output 35 GIO6 Digital Output General digital output pin. See Table 18 36 NC --- No Connect 37 NC --- No Connect 38 NC --- No Connect 39 NC --- No Connect 40 NC --- No Connect 41 AVDD_XOSC Power (Analog) Power supply for 16 MHz crystal oscillator 42 XOSC16_Q2 Analog output 16 MHz crystal oscillator 43 XOSC16_Q1 Analog input 16 MHz crystal oscillator or external clock input 44 AVDD_IF1 Power (Analog) Power supply connection of receive IF chain 45 R_BIAS Analog Output Connection for external precision bias resistor 46 ATEST2 Analog I/O Analog test I/O for prototype and production testing. Leave not connected when not used. 47 ATEST1 Analog I/O Analog test I/O for prototype and production testing. Leave not connected when not used. 48 AVDD_CHP Power (Analog) Power supply for phase detector and charge pump NOTES: The exposed die attach pad must be connected to a solid ground plane as this is the main ground connection for the chip. The digital inputs SCLK, SI and CSn are high-impedance inputs (no internal pull-up) and should have external pull- ups if not driven. RX and TX should have external pull-down if not driven (to prevent the state machine from being trigged). SO is high-impedance when CSn is high. External pull-up should be used at SO to prevent floating input at the microcontroller. |
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