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SI4020 参数 Datasheet PDF下载

SI4020图片预览
型号: SI4020
PDF下载: 下载PDF文件 查看货源
内容描述: 完全集成( IOW BOM ,易于设计的)无生产快速稳定所需的对齐方式,可编程,高清晰度PLL [Fully integrated (Iow BOM, easy design-in) No alignment required in production Fast settling, programmable, high-resolution PLL]
分类和应用:
文件页数/大小: 32 页 / 1064 K
品牌: SILICON [ SILICON ]
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Si4020  
Data Transmit Sequence Through the FSK Pin  
P o w e r M a n a g e m e n t C o m m a n d  
nSEL  
C 0 h  
3 8 h  
SCK  
SDI  
instruction  
tsx *  
xtal osc. stable  
Xtal osc staus  
Internal operations  
a0, a1 = 0  
ex, es, ea = 1  
tsp *  
synthesizer / PLL /  
PA status  
synthesizer on, PLL locked, PA ready to transmit  
T X D A T A  
d o n ' t c a r e  
FSK  
NOTE:  
* See page 6 for the timing values  
Data Transmit Sequence Through the SDI Pin  
Note:  
Do not send CLK pulses with the TX data bits; otherwise they will be interpreted as commands.  
This mode is not SPI compatible, therefore it is not recommended in microcontroller mode.  
If the crystal oscillator and the PLL are running, the tsx+tsp delay is not needed.  
19  
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