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| 型号： | 4431-T-B1 B 434 |
| 厂商： | Silicon Laboratories Inc |
| 文件页数： | 22/47页 |
| 文件大小： | 799K |
| 描述： | KIT DEV TEST EZRADIOPRO SI4431 |
| 标准包装： | 1 |
| 附件类型： | 测试卡，收发器，434MHz |
| 适用于相关产品： | EZRadioPRO? |
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Si4430/31/32-B1
22
Rev 1.1
3.2.3. TX State
The TX state may be entered from any of the IDLE modes when the txon bit is set to 1 in "Register 07h. Operating
Mode and Function Control 1". A built-in sequencer takes care of all the actions required to transition between
states from enabling the crystal oscillator to ramping up the PA. The following sequence of events will occur
automatically when going from STANDBY mode to TX mode by setting the txon bit.
1. Enable the main digital LDO and the Analog LDOs.
2. Start up crystal oscillator and wait until ready (controlled byan internal timer).
3. Enable PLL.
4. Calibrate VCO (this action is skipped when the skipvco bit is 1, default value is 0).
5. Wait until PLL settles to required transmit frequency (controlled by an internal timer).
6. Activate power amplifier and wait until power ramping is completed (controlled by an internal timer).
7. Transmit packet.
Steps in this sequence may be eliminated depending on which IDLE mode the chip is configured to prior to setting
the txon bit. By default, the VCO and PLL are calibrated every time the PLL is enabled.
3.2.4. RX State
The RX state may be entered from any of the IDLE modes when the rxon bit is set to 1 in "Register 07h. Operating
Mode and Function Control 1". A built-in sequencer takes care of all the actions required to transition from one of
the IDLE modes to the RX state. The following sequence of events will occur automatically to get the chip into RX
mode when going from STANDBY mode to RX mode by setting the rxon bit:
1. Enable the main digital LDO and the Analog LDOs.
2. Start up crystal oscillator and wait until ready (controlled by an internal timer).
3. Enable PLL.
4. Calibrate VCO (this action is skipped when the skipvco bit is 1, default value is 0).
5. Wait until PLL settles to required receive frequency (controlled by an internal timer).
6. Enable receive circuits: LNA, mixers, and ADC.
7. Enable receive mode in the digital modem.
Depending on the configuration of the radio all or some of the following functions will be performed automatically by
the digital modem: AGC, AFC (optional), update status registers, bit synchronization, packet handling (optional)
including sync word, header check, and CRC.
3.2.5. Device Status
The operational status of the chip can be read from "Register 02h. Device Status".
Add R/W Function/Description
D7
D6
D5
D4
D3
D2
D1
D0 POR Def.
02
R
Device Status
ffovfl ffunfl
rxffem
headerr
freqerr
cps[1] cps[0]
相关PDF资料 |
PDF描述 |
|---|---|
| 4431-T-B1 D 868 | KIT DEV TEST EZRADIOPRO SI4431 |
| XPGWHT-01-0000-00EE5 | LED NEUTRAL WHITE 4000K SMD |
| 4420-DKDB1 | KIT DEV TEST EZRADIO SI4420 TRX |
| 4320-DKDB2 | KIT DEV TEST EZRADIO SI4320 RX |
| 4320-DKDB10 | KIT DEV TEST EZRADIO SI4320 RX |
相关代理商/技术参数 |
参数描述 |
|---|---|
| 4431-T-B1B868 | 制造商:Silicon Laboratories Inc 功能描述:Split antenna Tx/Rx test card 868MHz |
| 4431-T-B1D434 | 制造商:Silicon Laboratories Inc 功能描述:One tied antenna Tx/Rx test card 434MHz |
| 4431-T-B1D470 | 制造商:Silicon Laboratories Inc 功能描述:One tied antenna Tx/Rx test card 470MHz |
| 4431-T-B1D868 | 制造商:Silicon Laboratories Inc 功能描述:One tied antenna Tx/Rx test card 868MHz |
| 4432 | 制造商:3M Electronic Products Division 功能描述:DOUBLE COATED VINYL FOAM TAPE, BLACK, 1/4" X 72 YD 1/32" |
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