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)： 49/75頁
文件大?。?/td> 1454K
代理商： CC113LRTKT
CC113L
SWRS108A
Page 53 of 68
0x0C: FSCTRL0 - Frequency Synthesizer Control
Bit
Field Name
Reset
R/W
Description
7:0
FREQOFF[7:0]
0 (0x00)
R/W
Frequency offset added to the base frequency before being used by the
frequency synthesizer. (2s-complement).
Resolution is FXTAL/2
14 (1.59 kHz - 1.65kHz); range is ±202 kHz to ±210
kHz, dependent of XTAL frequency.
0x0D: FREQ2 - Frequency Control Word, High Byte
Bit
Field Name
Reset
R/W
Description
7:6
FREQ[23:22]
0 (00)
R
FREQ[23:22] is always 0 (the FREQ2 register is less than 36 with
26 - 27 MHz crystal)
5:0
FREQ[21:16]
30
(011110)
R/W
FREQ[23:0] is the base frequency for the frequency synthesiser in
increments of fXOSC/2
16.
0]
:
[23
2
16
FREQ
f
XOSC
carrier
0x0E: FREQ1 - Frequency Control Word, Middle Byte
Bit
Field Name
Reset
R/W
Description
7:0
FREQ[15:8]
196 (0xC4)
R/W
Ref. FREQ2 register
0x0F: FREQ0 - Frequency Control Word, Low Byte
Bit
Field Name
Reset
R/W
Description
7:0
FREQ[7:0]
236 (0xEC)
R/W
Ref. FREQ2 register
0x10: MDMCFG4 - Modem Configuration
Bit
Field Name
Reset
R/W
Description
7:6
CHANBW_E[1:0]
2 (10)
R/W
5:4
CHANBW_M[1:0]
0 (00)
R/W
Sets the decimation ratio for the delta-sigma ADC input stream and thus
the channel bandwidth.
E
CHANBW
XOSC
channel
M
CHANBW
f
BW
_
2
)
_
4
(
8
The default values give 203 kHz channel filter bandwidth, assuming a 26.0
MHz crystal.
3:0
DRATE_E[3:0]
12 (1100)
R/W
The exponent of the user specified symbol rate
0x11: MDMCFG3 - Modem Configuration
Bit
Field Name
Reset
R/W
Description
7:0
DRATE_M[7:0]
34 (0x22)
R/W
The mantissa of the user specified symbol rate. The symbol rate is
configured using an unsigned, floating-point number with 9-bit mantissa
and 4-bit exponent. The 9
th bit is a hidden 1. The resulting data rate is:
XOSC
E
DRATE
DATA
f
M
DRATE
R
28
_
2
)
_
256
(
The default values give a data rate of 115.051 kBaud (closest setting to
115.2 kBaud), assuming a 26.0 MHz crystal.
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