hi，i can not understand the adxl357 ext_clk usage.
i want to use ext_clk,because the ext_clk have High precision.But the adxl357 is bad when the adxl357 INT2 PIN(ODR set 4khz ) coonnected to my Active crystals（Output 3V 1.204mhz,sometimes it ouput 3.6V）.
And the adxl357 setting as follow(red box):
1.why the adxl357 bad when connect to my crystals?
2.if i went to use ext_clk,how to set EXT_CLK adn Interupt Register?