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FAQs MAX2829如何通过SPI修改接收工作频点(5G频段)?
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    • MAX2829如何通过SPI修改接收工作频点(5G频段)?
    • 使用SPI接口控制RX/TX增益时,如何处理MAX2829的B1-B7输入?
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  • 使用AD936X Evaluation Software导出配置时,软件提示滤波器系数过多。

MAX2829如何通过SPI修改接收工作频点(5G频段)?

5GHz模式下,由于较宽的调谐范围,MAX2829需要启动内部的FSM(有限状态机)选择子频段;当然,也可以通过SPI写入子频段。如果使用FSM选择,则需操作以下步骤:

1) 设置D8 = 0 (A3:A0 = 0101)使能FSM自动选择VCO子波段;
2) 需要的话,使能PLL和VCO,编程分频比;
3) 设置D7 = 1 (A3:A0 = 0101)启动FSM。FSM应在PLL和VCO使能后,或频率通道更改后启动。
4) VCO子频段选择和PLL建立时间在300μs以内,完成频段切换,且PLL锁存到正确频段后,FSM自动停止。

 

Tags: MAX2829接收频率 KA-08186 MAX2829ETN+
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