目前使用ad9253 bcpz-125，时钟125M，默认配置情况下，工作正常，dco，fco，数据正常，寄存器配置如下
ad9253_spi_write(0x00,0x38);
ad9253_spi_write(0x15,0x01);
ad9253_spi_write(0x0B,0x04);
当想改变最大支持采样率，寄存器做如下配置，dco，fco信号消失，ad无法工作。
ad9253_spi_write(0x00,0x38);
ad9253_spi_write(0x15,0x01);
ad9253_spi_write(0x0B,0x04);
ad9253_spi_write(0xFF,0x00);
ad9253_spi_write(0x100,0x46);//（值设置为0x40也是同样现象）
ad9253_spi_write(0xFF,0x01);
现在想知道寄存器该怎么配置，才能将最大支持采样率调到125M
