CC2400: Assistance Required for I/Q Data Output from ATEST1/2 Pins | ATEST1/2引脚I/Q数据输出

Dear Team,
尊敬的技术团队：

I am currently working with the Ubertooth development board (based on CC2400 design) and attempting to retrieve I/Q data from the ATEST1/2 pins. Following the user manual, I have configured the registers as follows:

我正在使用基于CC2400设计的Ubertooth开发板，尝试从ATEST1/2引脚获取I/Q数据。根据用户手册的指导，我已按如下方式配置寄存器：

– **ATESTMOD_PD = 0** [to disable power down]
– **ATESTMOD_MODE = 0x2** [to output signals from the VGA]

Additionally, I have connected the pins to an oscilloscope.
此外，我已将引脚与示波器连接。

I have also modified the Ubertooth firmware to implement the necessary register changes. While using the Ubertooth's Rx functionality, I can successfully obtain **decoded Bluetooth broadcast information** from the command line. However, I still cannot observe the expected signals on the oscilloscope.

我同时修改了Ubertooth的固件以实现相应的寄存器更改。在使用Ubertooth的接收功能时，我可以通过命令行**获得解码后的蓝牙广播信息**，但在示波器上仍无法观测到期望的信号。

Upon powering the device, I observed a constant voltage of **0.7V** on the oscilloscope, which does not correspond to either a high or low logic level.

设备上电后，我在示波器上观察到一条**0.7V**的直线，这既不属于高电平也不属于低电平的逻辑状态。

Could you kindly advise if there are additional registers that need to be configured or any other operations I might be missing?

烦请告知是否需要配置其他寄存器，或是否有其他操作我尚未执行？

Thank you in advance for your assistance.
感谢您提前提供的帮助。

Best regards.
此致
敬礼

Links：

您好，

我注意到您已经在技术论坛发帖了，所以请继续保持跟帖，直至您的疑问全部被解决。

(+) CC2400: I/Q Data Output from ATEST1/2 Pins – Other wireless technologies forum – Other wireless – TI E2E support forums

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