[问答]

是否有可能将bcm43438用于其他频率？

1956 编程

问答对人有帮助，内容完整，我也想知道答案 0 我感兴趣的是，在理论上是否可以使用BCM4338芯片在其他频率上比2.4G和5G，这大概相当于带过滤是否在芯片内部的硬件、芯片内的软件或硬件输出中进行的问题。其中的一个。我完全意识到（并且无意忽略）单独的监管问题，同样地，固件不支持这一点。这可能有助于说明什么是显而易见的：我知道硬件编程比硬件组装更多。谢谢您！以上来自于百度翻译以下为原文 I am interested in the question of whether it is theoretically possible to use the bcm43438 chip on other frequencies than 2.4G and 5G, which is presumably equivalent to the question of whether the band filtering is done in hardware inside the chip, in software inside the chip or in hardware outside of it. I am fully aware of (and have no intention of ignoring) the separate regulatory issues, and equally so that the firmware would not support this. It might be helpful to state what is probably obvious: that I know more about hardware programming than about hardware assembly. Thank you! 0
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答案对人有帮助，有参考价值 0 恐怕你不能把芯片用在2.4G和5G以外的频率上。你可以参考43438数据表中的WLAN无线子系统。它说CYW4338包括一个集成在2.4 GHz无线局域网系统中的WLAN射频收发器。它被设计为在全球可用的2.4 GHz未授权ISM频段中运行的应用提供低功率、低成本和鲁棒的通信。发送和接收部分包括所有的片上滤波、混合和增益控制功能。无线电功能框图是：因此，很明显，过滤是在芯片内部的硬件。NVRAM文件（特定于平台）中的一些参数与所使用的过滤器类型有关。所以过滤的一部分也由软件控制。 CYW4338仅支持2.4GHz，因此在任何情况下都不能用于5GHz。我希望这能澄清你的疑问。以上来自于百度翻译以下为原文 I am afraid you can not use the chip for frequencies other than 2.4G and 5G. You can refer the WLAN Radio Subsystem in the 43438 datasheet. It says that the CYW43438 includes an integrated WLAN RF transceiver that has been optimized for use in 2.4 GHz Wireless LAN systems. It is designed to provide low power, low cost, and robust communications for applications operating in the globally available 2.4 GHz unlicensed ISM band. The transmit and receive sections include all on-chip filtering*, mixing, and gain control functions. The Radio functional block diagram is: Hence it is clear that filtering is in hardware inside the chip. There are some parameters in the nvram file(specific to platform) regarding the kind of filters used. So part of filtering is also controlled by software. CYW43438 supports only 2.4Ghz so it can not be used for 5Ghz in any case. I hope this clears your query.

2018-12-20 16:21:43 评论举报张英