我在尝试驱动这个dac60096芯片，这写con、pwrm等是每一个子系统都有一份，还是说是全局寄存器，我现在尝试上电后去读取pwrm寄存器，并未得到任何说明书上正确的返回值，如果向ptr寄存器写入，再读取ptr会得到相同的值和其他值，不知是什么问题（I am trying to drive this dac60096 chip. Does each subsystem have a copy of con, pwrm, etc., or are they global registers? I am trying to read the pwrm register after powering on, but I don't get any correct return value as stated in the manual. If I write to the ptr register and then read ptr, I get the same value and other values. I don't know what the problem is.）
