RFM98 datasheet(33/121 Pages) HOPE

tên linh kiện	RFM98

Giải thích chi tiết về linh kiện	Low Power Long Range Transceiver Module

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Page 33

RFM95/96/97/98(W)

Tel: + 86-755-82973805

Fax: + 86-755-82973550

E-mail: sales@hoperf.com http:/ / www.hoperf.com

WIRELESS & SENSING

PRELIMINARY

DATASHEET

4.1.5. LoRa

Modem State Machine Sequences

The sequence for transmission and reception of data to and from the LoRaTM modem, together with flow charts of typical

sequences of operation, are detailed below.

Data Transmission Sequence

In transmit mode power consumption is optimized by enabling RF, PLL and PA blocks only when packet data needs to be

transmitted. Figure 8 shows a typical LoRaTM transmit sequence.

Figure 8. LoRa

modulation transmission sequence.

Static configuration registers can only be accessed in Sleep mode, Stand-by mode or FSTX mode.

The LoRaTM FIFO can only be filled in Stand-by mode.

Data transmission is initiated by sending TX mode request.

Upon completion the TxDone interrupt is issued and the radio returns to Stand-by mode.

Following transmission the radio can be manually placed in Sleep mode or the FIFO refilled for a subsequent Tx

operation.

RFM98 bảng dữ liệu(PDF) 33 Page - HOPE Microelectronics CO., Ltd.