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S2-LPS 데이터시트(PDF) 57 Page - STMicroelectronics

부품명 S2-LPS
상세설명  Ultra-low power, high performance, sub-1 GHz transceiver
PDF  73 Pages
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제조업체  STMICROELECTRONICS [STMicroelectronics]
홈페이지  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

S2-LPS 데이터시트(HTML) 57 Page - STMicroelectronics

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Name
Addr
Default
Bit
Field name
Description
PA_CONFIG0
64
8A
00xx ® code
threshold: 418
xx11 ® clamp voltage:
0.55 V
xx10 ® clamp voltage:
0.50 V
xx01 ® clamp voltage:
0.45 V
xx00 ® clamp voltage:
0.40 V.
3
PA_DEGEN_ON
Enables the
'degeneration' mode
that introduces a pre-
distortion to linearize
the power control
curve.
2
SAFE_ASK_CAL
During a TX operation,
enables and starts the
digital ASK calibrator.
1:0
PA_FC
PA Bessel filter
bandwidth:
•
00b: 12.5 kHz
(data rate 16.2
kbps)
•
01b: 25 kHz
(data rate 32
kbps)
•
10b: 50 kHz
(data rate 62.5
kbps)
•
11b: 100 kHz
(data rate 125
kbps), (see
Section 4.4.2.1
OOK
smoothing) .
SYNTH_CONFIG2
65
D0
7:3
RESERVED
-
2
PLL_PFD_SPLIT_EN
Enables increased DN
current pulses to
improve linearization
of CP/PFD (see
Table 30. Charge
pump words).
1:0
RESERVED
-
VCO_CONFIG
68
03
7:6
RESERVED
-
5
VCO_CALAMP_EXT_
SEL
1 → VCO amplitude
calibration is skipped
(external amplitude
word forced on VCO).
4
VCO_CALFREQ_EXT
_SEL
1 → VCO frequency
calibration is skipped
(external amplitude
word forced on VCO).
3:0
RESERVED
-
VCO_CALIBR_IN2
69
88
7:0
RESERVED
-
VCO_CALIBR_IN1
6A
40
7:0
RESERVED
-
S2-LPS
Register contents
DS13831 - Rev 1
page 57/73



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