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| 型號(hào)： | 1200 |
| 廠(chǎng)商： | TEXAS INSTRUMENTS INC |
| 元件分類(lèi)： | 無(wú)繩電話(huà)/電話(huà) |
| 英文描述： | TELECOM, CELLULAR, RF AND BASEBAND CIRCUIT, QCC20 |
| 封裝： | 4 X 4 MM, ROHS COMPLIANT, QLP-20 |
| 文件頁(yè)數(shù)： | 48/70頁(yè) |
| 文件大?。?/td> | 841K |
| 代理商： | 1200 |
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Chipcon
SmartRF CC1100
Chipcon AS
SmartRF
CC1100 Preliminary Data Sheet (rev. 1.0) 2005-04-25
Page 52 of 68
0x13: MDMCFG1– Modem configuration
Bit
Field Name
Reset
R/W
Description
7
FEC_EN
0
R/W
Enable Forward Error Correction (FEC) with interleaving for
packet payload
6:4
NUM_PREAMBLE[2:0]
2 (010)
R/W
Sets the minimum number of preamble bytes to be
transmitted
Setting
Number of preamble bytes
0 (000)
2
1 (001)
3
2 (010)
4
3 (011)
6
4 (100)
8
5 (101)
12
6 (110)
16
7 (111)
24
3:2
Reserved
R0
1:0
CHANSPC_E[1:0]
2 (10)
R/W
2 bit exponent of channel spacing
0x14: MDMCFG0– Modem configuration
Bit
Field Name
Reset
R/W
Description
7:0
CHANSPC_M[7:0]
248 (0xF8)
R/W
8-bit mantissa of channel spacing (initial 1 assumed). The
channel spacing is multiplied by the channel number CHAN and
added to the base frequency. It is unsigned and has the format:
()
CHAN
M
CHANSPC
f
E
CHANSPC
XOSC
CHANNEL
+
=
_
18
2
_
256
2
The default values give 199.951kHz channel spacing (the
closest setting to 200kHz), assuming 26.0MHz crystal
frequency.
0x15: DEVIATN – Modem deviation setting
Bit
Field Name
Reset
R/W
Description
7
Reserved
R0
6:4
DEVIATION_E[2:0]
4 (100)
R/W
Deviation exponent
3
Reserved
R0
2:0
DEVIATION_M[2:0]
7 (111)
R/W
When MSK modulation is enabled:
Sets fraction of symbol period used for phase change.
When 2-FSK/GFSK modulation is enabled:
Deviation mantissa, interpreted as a 4-bit value with MSB
implicit 1. The resulting frequency deviation is given by:
E
DEVIATION
xosc
dev
M
DEVIATION
f
_
17
2
)
_
8
(
2
+
=
The default values give ±47.607kHz deviation, assuming
26.0MHz crystal frequency.
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