我使用ADS125H02器件做RTD测量，发现两个问题:
1，当我开启电流源输出，设置外部ref0作为参考源时，电流源不输出。若改为内部参考，则电流源可以输出。请问这是什么原因？这个芯片不能做比例式的rtd测量吗？
2，当我用cs1读写寄存器时，一切正常，但当我用cs2读写寄存器（>=0x10）时，出现错误，跟踪发现返回数据收到的是FF,00,00,00。操作寄存器之前，我已成功执行过unlock命令，测试发现cs2正常输出了低电平。请问这是什么原因？另外，为了省一个IO，cs采用了一个非门来实现了两个cs信号。
I used ADS125H02 device for RTD measurements and found two problems:
1, when I turn on the current source output and set the external ref0 as the reference source, the current source does not output. If it is changed to an internal reference, the current source can be output. What is the reason for this? Can't this chip do proportional RTD measurements?
2, When I read and write registers with cs1, everything works fine, but when I read and write registers (>=0x10) with cs2, an error occurs, and the trace finds that the returned data received is FF,00,00,00. Before manipulating the register, I successfully executed the unlock command, and confirm that cs2 output low normally. What is the reason for this? In addition, in order to save one IO, cs uses a non-gate to implement two cs signals.
