RF96 datasheet(52/121 Pages) HOPE

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Page 52

RF96/97/98

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Tx Mode

Rx Mode

WIRELESS & SENSING

PRELIMINARY

DATASHEET

4.2.5.3. Time to RSSI Evaluation

The first RSSI sample will be available TS_RSSI after the receiver is ready, in other words TS_RE + TS_RSSI after the

receiver was requested to turn on.

Timeline

TS_RE

+TS_RSSI

FSRx

Rssi IRQ

Rssi sample

ready

Figure 18. Time to Rssi Sample

TS_RSSI depends on the receiver bandwidth, as well as the RssiSmoothing option that was selected. The formula used to

calculate TS_RSSI is provided in section 2.5.4.

4.2.5.4. Tx to Rx Turnaround Time

Timeline

TS_HOP

+TS_RE

1. set new Frf (*)

2. set Rx mode

Rx Mode

(*) Optional

Figure 19. Tx to Rx Turnaround

Note

The SPI instruction times are omitted, as they can generally be very small as compared to other timings (up to

10MHz SPI clock).

4.2.5.5. Rx to Tx

Timeline

TS_HOP

+TS_TR

1. set new Frf (*)

2. set Tx mode

Tx Mode

(*) Optional

Figure 20. Rx to Tx Turnaround

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