參數(shù)資料
型號: RXC101
廠商: RF Monolithics, Inc.
英文描述: Multi-channel High data rate Programmable
中文描述: 多通道可編程數(shù)據(jù)率高
文件頁數(shù): 25/33頁
文件大?。?/td> 546K
代理商: RXC101
25
Frequency Setting Register
[POR=A680h]
Bit
Bit
Bit
Bit
Bit
Bit
Bit
Bit
Bit
Bit
Bit
Bit
Bit
Bit
Bit
Bit
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
1
0
1
0
Freq11
Freq10
Freq9
Freq8
Freq7
Freq6
Freq5
Freq4
Freq3
Freq2
Freq1
Freq0
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)
Max (MHz)
300 MHz
310.24
400 MHz
430.24
800 MHz
860.48
900 MHz
900.72
Bit descriptions are as follows:
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 3 below and the following equation:
f
c
= 10 * B1 * (B0 + f
VAL
/4000) MHz
where f
VAL
= decimal value of Freq[11..0] = 96<f
VAL
<3903.
Use Table 14 to select the frequency band and substitute into the above equation to calculate the center
frequency of the desired band.
TABLE 14.
Range
315 MHz
433 MHz
868 MHz
916 MHz
Tuning Resolution
2.5 kHz
2.5 kHz
5.0 kHz
7.5 kHz
319.75
439.75
879.51
929.27
B1
1
1
2
3
B0
31
43
43
30
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