參數(shù)資料
型號(hào)： SI4020-I1-FT
廠商： Silicon Laboratories Inc
文件頁(yè)數(shù)： 22/32頁(yè)
文件大?。?/td> 1058K
描述： IC TX FSK 915MHZ 5.4V 16-TSSOP
標(biāo)準(zhǔn)包裝： 96
頻率： 315MHz，433MHz，868MHz，和 915MHz
調(diào)制或協(xié)議： FSK，OOK
數(shù)據(jù)傳輸率 - 最大： 256 kbps
電流 - 傳輸： 14mA
數(shù)據(jù)接口： PCB，表面貼裝
天線連接器： PCB，表面貼裝
電源電壓： 2.2 V ~ 5.4 V
工作溫度： -40°C ~ 85°C
封裝/外殼： 16-TSSOP（0.173"，4.40mm 寬）
包裝： 管件
產(chǎn)品目錄頁(yè)面： 585 (CN2011-ZH PDF)
其它名稱： 336-1621-5
Si4020
 
 
22
 
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 (see note)
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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