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參數(shù)資料
| 型號： | CC113LRTKT |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 無繩電話/電話 |
| 英文描述： | TELECOM, CELLULAR, RF AND BASEBAND CIRCUIT, PQCC20 |
| 封裝： | 4 X 4 MM, GREEN, PLASTIC, VQFN-20 |
| 文件頁數(shù)： | 28/75頁 |
| 文件大?。?/td> | 1454K |
| 代理商： | CC113LRTKT |
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CC113L
SWRS108A
Page 34 of 68
MAX_DVGA_GAIN[1:0]
00
01
10
11
MAX_
LN
A
_
GA
IN
[2
:0
]
000
97.5
91.5
85.5
79.5
001
94
88
82.5
76
010
90.5
84.5
78.5
72.5
011
88
82.5
76.5
70.5
100
85.5
80
73.5
68
101
84
78
72
66
110
82
76
70
64
111
79
73.5
67
61
Table 24: Typical RSSI Value in dBm at CS
Threshold with
MAGN_TARGET = 3 (33 dB) at
2.4 kBaud, 868 MHz
MAX_DVGA_GAIN[1:0]
00
01
10
11
MAX_
LN
A
_
GA
IN
[2
:0
]
000
90.5
84.5
78.5
72.5
001
88
82
76
70
010
84.5
78.5
72
66
011
82.5
76.5
70
64
100
80.5
74.5
68
62
101
78
72
66
60
110
76.5
70
64
58
111
74.5
68
62
56
Table 25: Typical RSSI Value in dBm at CS
Threshold with
MAGN_TARGET = 7 (42 dB) at
250 kBaud, 868 MHz
If the threshold is set high, i.e. only strong
signals are wanted, the threshold should be
adjusted
upwards
by
first
reducing
the
value
and
then
the
MAX_DVGA_GAIN value. This will reduce
power consumption in the receiver front end,
since the highest gain settings are avoided.
17.3.2 CS Relative Threshold
The relative threshold detects sudden changes
in the measured signal level. This setting does
not depend on the absolute signal level and is
thus useful to detect signals in environments
with a time varying noise floor. The register
field
is used to enable/disable relative CS, and to
select threshold of 6 dB, 10 dB, or 14 dB RSSI
change.
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