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S2-LP 数据表(PDF) 40 Page - STMicroelectronics

部件名 S2-LP
功能描述  Excellent receiver selectivity and blocking
PDF  90 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

S2-LP 数据表(HTML) 40 Page - STMicroelectronics

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DocID029944 Rev 1
Boolean relationships among any of them can be configured, to suit user application. In
particular, it is required to include always SQI valid check, to avoid to stay in RX state for
unlimited time, if timeout is stopped but no valid SQI is detected (in such cases, the RX
state can be left using a SABORT command).
On timer expiration, reception aborts and the packet is discarded.
Table 42: RX timer stop condition configuration
RX_TIMEOUT_
AND_OR_SELECT
CS_TIMEOUT_MASK
SQI_TIMEOUT_MASK
PQI_TIMEOUT_MASK
Description
0
0
0
0
The RX timeout
never expires and
the reception ends
at the reception of
the packet
1
0
0
0
The RX timeout
cannot be stopped.
It starts at the RX
state and at the end
expires
X
1
0
0
RSSI above
threshold
X
0
1
0
SQI above
threshold (default)
X
0
0
1
PQI above
threshold
0
1
1
0
Both RSSI AND SQI
above threshold
0
1
0
1
Both RSSI AND PQI
above threshold
0
0
1
1
Both SQI AND PQI
above threshold
0
1
1
1
ALL above
threshold
1
1
1
0
RSSI OR SQI
above threshold
1
1
0
1
RSSI OR PQI
above threshold
1
0
1
1
SQI OR PQI above
threshold
1
1
1
1
ANY above
threshold
5.5.7
Receiver data modes
Direct modes are primarily intended to completely bypass the automatic packet handler, in
order to give the user maximum flexibility in the choice of frame formats. Specifically:
Direct through FIFO mode: the packet bytes are continuously received and written in
the RX FIFO without any processing. It is the responsibility of the microcontroller to
avoid any overflow conditions on the RX FIFO.
Direct through GPIO mode: the packet bits are continuously written to one of the
GPIO pins without any processing. To allow the synchronization of an external data
sink, a data clock signal is also provided on one of the GPIO pins. Data are updated



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