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参数资料
| 型号： | EZLC-4421 LB |
| 厂商： | Silicon Laboratories Inc |
| 文件页数： | 17/45页 |
| 文件大小： | 0K |
| 描述： | KIT EZLINK F930/SI4421 LOW BAND |
| 标准包装： | 1 |
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Si4421
3. Frequency Setting Command
Bit
15
1
14
0
13
1
12
0
11
f11
10
f10
9
f9
8
f8
7
f7
6
f6
5
f5
4
f4
3
f3
2
f2
1
f1
0
f0
POR
A680h
The 12-bit parameter F (bits f11 to f0 ) should be in the range
of 96 and 3903. When F value sent is out of range, the
The constants C1 and C2 are determined by
the selected band as:
previous value is kept. The synthesizer center frequency f 0
can be calculated as:
f 0 = 10 · C1 · (C2 + F/4000) [MHz]
Band [MHz]
433
868
915
C1
1
2
3
C2
43
43
30
Band
433 MHz
868 MHz
915 MHz
Minimum Frequency
430.2400 MHz
860.4800 MHz
900.7200 MHz
Maximum Frequency
439.7575 MHz
879.5150 MHZ
929.2725 MHz
PLL Frequency Step
2.5 kHz
5.0 kHz
7.5 kHz
4. Data Rate Command
Bit
15
1
14
1
13
0
12
0
11
0
10
1
9
1
8
0
7
cs
6
r6
5
r5
4
r4
3
r3
2
r2
1
r1
0
r0
POR
C623h
The actual bit rate in transmit mode and the expected bit rate of the received data stream in receive mode is determined by the 7-bit
parameter R (bits r6 to r0 ) and bit cs .
BR = 10000 / 29 / (R+1) / (1+ cs · 7) [kbps]
In the receiver set R according to the next function:
R= (10000 / 29 / (1+ cs · 7) / BR) – 1, where BR is the expected bit rate in kbps.
Apart from setting custom values, the standard bit rates from 600 bps to 115.2 kbps can be approximated with small error.
Data rate accuracy requirements:
Clock recovery in slow mode: ? BR/BR < 1/(29 · N bit )
Clock recovery in fast mode: ? BR/BR < 3/(29 · N bit )
BR is the bit rate set in the receiver and ? BR is the bit rate difference between the transmitter and the receiver. N bit is the maximum
number of consecutive ones or zeros in the data stream. It is recommended for long data packets to include enough 1/0 and 0/1
transitions, and to be careful to use the same division ratio in the receiver and in the transmitter.
5. Receiver Control Command
Bit
15
1
14
0
13
0
12
1
11
0
10
p16
9
d1
8
d0
7
i2
6
i1
5
i0
4
g1
3
g0
2
r2
1
r1
0
r0
POR
9080h
Bit 10 (p16) :
Pin 16 function select
p16
0
1
Function of pin 16
Interrupt input
VDI output
17
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| EZLC4431B1-D434 | 功能描述:射频开发工具 EZLink Kit F930 Si4431 Rev B1 434MHz RoHS:否 制造商:Taiyo Yuden 产品:Wireless Modules 类型:Wireless Audio 工具用于评估:WYSAAVDX7 频率: 工作电源电压:3.4 V to 5.5 V |
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| EZLC-4432 HB | 功能描述:射频开发工具 EZLink Fast Prototype Kit Hiband RoHS:否 制造商:Taiyo Yuden 产品:Wireless Modules 类型:Wireless Audio 工具用于评估:WYSAAVDX7 频率: 工作电源电压:3.4 V to 5.5 V |
| EZLC-4432 HB/LB KIT | 制造商:Silicon Laboratories Inc 功能描述: |
| EZLC-4432 LB | 功能描述:射频开发工具 EZLink Fast Prototype Kit Lwband RoHS:否 制造商:Taiyo Yuden 产品:Wireless Modules 类型:Wireless Audio 工具用于评估:WYSAAVDX7 频率: 工作电源电压:3.4 V to 5.5 V |
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