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參數(shù)資料
| 型號： | TRC101 |
| 廠商： | RF Monolithics, Inc. |
| 英文描述： | highly integrated single chip |
| 中文描述： | 高度集成的單芯片 |
| 文件頁數(shù)： | 18/33頁 |
| 文件大?。?/td> | 512K |
| 代理商： | TRC101 |
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18
Frequency Setting Register
[POR=A680h]
Bit Bit Bit Bit
Bit
15 14 13 12
11
1
0
1
0
Freq11 Freq10 Freq9 Freq8
The Frequency Setting Register sets the exact frequency within the selected band for transmit or receive.
Each band has a range of frequencies available for channelization or frequency hopping. The selectable
frequencies for each band are:
Frequency Band Min (MHz)
300 MHz
310.24
400 MHz
430.24
800 MHz
860.48
900 MHz
900.72
Bit [15..12] – Command Code
: These bits are the command code that is sent serially to the processor
that identifies the bits to be written to the Frequency Setting register.
Bit [11..0] – Frequency Setting
: These bits set the center frequency to be used during transmit or
receive. The value of bits[11..0] must be in the decimal range of 96 to 3903. Any value outside of this
range will cause the previous value to be kept and no frequency change will occur. To calculate the
center frequency fc, use Table 9 below and the following equation:
f
c
= 10 * B1 * (B0 + f
VAL
/4000) MHz
Bit
10
Bit
9
Bit
8
Bit
7
Bit
6
Bit
5
Bit
4
Bit
3
Bit
2
Bit
1
Bit
0
Freq7
Freq6
Freq5
Freq4
Freq3 Freq2
Freq1
Freq0
Max (MHz)
319.75
439.75
879.51
929.27
Tuning Resolution
2.5 kHz
2.5 kHz
5.0 kHz
7.5 kHz
where f
VAL
= decimal value of Freq[11..0] = 96<f
VAL
<3903.
TABLE 9.
Range
315 MHz
433 MHz
868 MHz
916 MHz
B1
1
1
2
3
B0
31
43
43
30
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