Electronic Components Datasheet Search |
|
SX1243 Datasheet(PDF) 11 Page - Semtech Corporation |
|
SX1243 Datasheet(HTML) 11 Page - Semtech Corporation |
11 / 24 page SX1243, Rev 3, May 2012 ©2012 Semtech Corporation SX1243 www.semtech.com Page 11 Integrated Transmitter IC WIRELESS & SENSING DATASHEET 4.3. Application Mode: Power & Go The default ‘Power & Go’ application mode sees the SX1243 configured as detailed in Table 6. By changing the logical state of the CTRL pin at Power-up or Reset, two distinct configuration modes can be selected. The Power & Go application modes hence permit microcontroller-less operation. Table 6 Configuration in Power & Go Mode 4.4. Application Mode: Advanced 4.4.1. Advanced Mode: Configuration As described on Figure 4, Advanced mode is entered when accessing the Two Wire Interface (TWI) bus of the SX1243. Upon communication to the register at up to 10 MHz of clocking speed, complete flexibility on the use of the chip is obtained. Once all register settings are selected (see registers detailed description in section [5]), the SX1243 can be used either in Automatic mode by simply toggling the DATA pin, or in Forced Transmit mode to optimize timings for instance. 4.4.2. Frequency Hopping Spread Spectrum Frequency hopping is supported in Advanced mode. After sending the data stream in the first channel, the user can send a Frequency change instruction containing the new channel frequency. The circuit will automatically ramp down the PA, lock the PLL to the new frequency, and turn the Power Amplifier back on. The user can then send his packet data on the new channel. Timings are detailed hereafter: Figure 6. Frequency Hopping Description Notes - During any TWI access, the input of the modulator is inhibited - The time between two Frequency change instructions shall be greater than TS_HOPi - FHSS modulation, as described under FCC part 15.247, is supported by the SX1243; also note that the large Frequency Deviation settings available on the SX1243 make it suitable for “Digitally Modulated Systems”, as described under FCC Part 15.247 (a)(2) CTRL Pin Configuration Mode ‘Low’ FSK 868.3 MHz, +10 dBm, Fdev=+/-19.2 kHz Power&Go 1 ‘High’ OOK 433.92 MHz, +10 dBm Power&Go 2 Tx Channel B DATA t < TOFFT (2 or 20 ms) Frequency change CTRL Frequency change TWI instruction RFOUT t < TOFFT (2 or 20 ms) TS_HOPi Tx Channel A 5th falling edge on CTRL 24th falling edge on CTRL |
Similar Part No. - SX1243 |
|
Similar Description - SX1243 |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.NET |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |