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参数资料
| 型号： | 4021-DKDB14 |
| 厂商： | Silicon Laboratories Inc |
| 文件页数： | 23/34页 |
| 文件大小： | 783K |
| 描述： | KIT DEV TEST EZRADIO SI4021 TX |
| 标准包装： | 1 |
| 附件类型： | 测试卡，发射器，434MHz |
| 适用于相关产品： | EZRadio? |
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Si4021
23
Push-button 1:
00000080
88 72 A6 10 C6 60 55 55 55 55 55 55 55 55 55 55
00000090
55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55
000000A0
55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55
000000B0
55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55
000000C0
55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55
000000D0
55 55 55 55 55 55 55 55 55 55 55 55 55 55 55 55
000000E0
55 55 55 55 55 55 C4 00 00 00 00 00 00 00 00 00
000000F0
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Short Explanation:
Address
Command
Parameter
Related Control Command
Remarks
8081
8
872
Configuration Control
433MHz band, Xtal C
L
=12pF
f
dev
=90kHz
8283
A
610
Frequency
f
c
=(43+1552/4000)*10MHz
8485
C6
60
Data Transmit
Transmit the next 96 bytes
86E5
60x55
Data
E6E7
C4
00
Sleep
Power down, go to address 80
Note:
This routine is repeatedly executed while PB1 is pressed, because continuous execution was selected at POR (CA1E code issued in
the power-on reset section before).
RX-TX ALIGNMENT PROCEDURES
RX-TX frequency offset can be caused only by the differences in the actual reference frequency. To minimize these errors it is suggested to
use the same crystal type and the same PCB layout for the crystal placement on the RX and TX PCBs.
To verify the possible RX-TX offset it is suggested to measure the CLK output of both chips with a high level of accuracy. Do not measure the
output at the XTL pin since the measurement process itself will change the reference frequency. Since the carrier frequencies are derived
from the reference frequency, having identical reference frequencies and nominal frequency settings at the TX and RX side there should be
no offset if the CLK signals have identical frequencies.
It is possible to monitor the actual RX-TX offset using the AFC status report included in the status byte of the receiver. By reading out the
status byte from the receiver the actual measured offset frequency will be reported. In order to get accurate values the AFC has to be
disabled during the read by clearing the "en" bit in the AFC Control Command (bit 0).
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相关代理商/技术参数 |
参数描述 |
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| 4021-DKDB2 | 功能描述:射频开发工具 Test Board BIFA Tx (915MHz) 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 |
| 4021-DKDB3 | 功能描述:射频开发工具 Test Board BIFA Tx (868MHz) 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 |
| 4021-DKDB7 | 功能描述:射频开发工具 Test Board xloop Tx (915/868MHz) 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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