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CC2400-RTR1 数据表(PDF) 60 Page - Texas Instruments

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部件名 CC2400-RTR1
功能描述  2.4 GHz Low-Power RF Transceiver
PDF  84 Pages
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制造商  TI [Texas Instruments]
网页  http://www.ti.com
标志 TI - Texas Instruments

CC2400-RTR1 数据表(HTML) 60 Page - Texas Instruments

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CC2400
SWRS042A
Page 60 of 83
Bit
Field Name
Reset
R/W
Description
0
XOSC16M_EN
0
R/W
Forces the 16 MHz main crystal oscillator and the global bias on.
These modules can also be turned on in other ways.
FSCTRL (0x01) - Frequency Synthesiser Control and Status
Bit
Field Name
Reset
R/W
Description
15:6
-
0
W0
Reserved, write as 0.
5:4
LOCK_THRESHOLD[1:0]
1
R/W
Number of consecutive reference clock periods with successful
sync windows required to indicate lock:
0: 64
1: 128
2: 256
3: 512
3
CAL_DONE
0
R
Calibration has been performed since the last time the FS was
turned on.
2
CAL_RUNNING
0
R
Calibration status, '1' when calibration in progress.
1
LOCK_LENGTH
0
R/W
LOCK_WINDOW pulse width:
0: 2 CLK_PRE periods
1: 4 CLK_PRE periods
0
LOCK_STATUS
0
R
'1' when PLL is in lock, otherwise '0'.
FSDIV (0x02) - Frequency Synthesiser Frequency Division Control
Bit
Field Name
Reset
R/W
Description
15:12
-
0
W0
Reserved, write as 0.
11:10
FREQ[11:10]
2
R
Read only.
Directly gives the right frequency in MHz when reading/writing
FREQ[11:0].
9:0
FREQ[9:0]
353
R/W
Frequency control word.
[
][ ]
0
:
9
2048
0
:
11
FREQ
FREQ
f
c
+
=
=
[MHz]
where fc is the channel centre frequency. See page 47 for a
description of how to program the channel for tansmit and
receive modes respectively.
Reading/writing FREQ[11:0] gives the right frequency in MHz.
The default value corresponds to fc=2401MHz.
MDMCTRL (0x03) - Modem Control and Status
Bit
Field Name
Reset
R/W
Description
15:13
-
0
W0
Reserved, write as 0.
12:7
MOD_OFFSET[5:0]
0
R/W
Modulator/Demodulator centre frequency in 15.625 kHz steps
(for the receiver the steps are relative to 1 MHz, for the
transmitter the steps are relative to 0MHz when
MDMTST0.TX_1MHZ_OFFSET_N=1).
Two's complement signed value. I.e. MOD_OFFSET=0x1F
centre frequency=1.48 MHz; MOD_OFFSET=0x20
centre



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