SX1232
WIRELESS & SENSING
DATASHEET
4.2.3. 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
0
TS_RE
TS_RE
+TS_RSSI
Rssi IRQ
FSRx
Rx
Rssi sample
ready
Figure 16. Time to Rssi Sample
TS_RSSI depends on the receiver bandwitdh, as well as the RssiSmoothing option that was selected. The formula used to
calculate TS_RSSI is provided in section 3.5.3.
4.2.4. Tx to Rx Turnaround Time
Timeline
0
TS_HOP
+TS_RE
1. set new Frf (*)
2. set Rx mode
Rx Mode
Tx Mode
(*) Optional
Figure 17. 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. Rx to Tx
Timeline
0
TS_HOP
+TS_TR
1. set new Frf (*)
2. set Tx mode
Tx Mode
Rx Mode
(*) Optional
Figure 18. Rx to Tx Turnaround
Rev 3 - August 2012
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