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CC2550-RTR1 数据表(PDF) 40 Page - Texas Instruments

部件名 CC2550-RTR1
功能描述  Single Chip Low Cost Low Power RF Transmitter
PDF  55 Pages
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制造商  TI [Texas Instruments]
网页  http://www.ti.com
标志 TI - Texas Instruments

CC2550-RTR1 数据表(HTML) 40 Page - Texas Instruments

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CC2550
PRELIMINARY Data Sheet (Rev.1.2)
SWRS039A
Page 40 of 54
0x0A: CHANNR – Channel number
Bit
Field Name
Reset
R/W
Description
7:0
CHAN[7:0]
0 (0x00)
R/W
The 8-bit unsigned channel number, which is multiplied by
the channel spacing setting and added to the base
frequency.
0x0D: FREQ2 – Frequency control word, high byte
Bit
Field Name
Reset
R/W
Description
7:6
FREQ[23:22]
1 (01)
R
FREQ[23:22] is always binary 01 (the FREQ2 register is in the range
85 to 95 with 26 - 27 MHz crystal)
5:0
FREQ[21:16]
30
(0x1E)
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
f
XOSC
carrier
⋅
=
The default frequency word gives a base frequency of 2464 MHz,
assuming a 26.0 MHz crystal. With the default channel spacing
settings, the following FREQ2 values and channel numbers can be
used:
FREQ2
Base frequency
Frequency range (CHAN
numbers)
91 (0x5B)
2386 MHz
2400.2-2437 MHz (71-255)
92 (0x5C)
2412 MHz
2412-2463 MHz (0-255)
93 (0x5D)
2438 MHz
2431-2483.4 MHz (0-227)
94 (0x5E)
2464 MHz
2464-2483.4 MHz (0-97)
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 – Modulator configuration
Bit
Field Name
Reset
R/W
Description
7:4
Reserved
R0
Defined on the transceiver version
3:0
DRATE_E[3:0]
12 (1100)
R/W
The exponent of the user specified symbol rate



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