DAC8801: DAC Output when Clock is disabled, but SDI and CS is active

Part Number:DAC8801

What will the DAC output do if the Clock input is not transitioning, but SDI and CS are moving as if the clock is moving.

We have a circuit that when the system detects a system condition, it disables the clock by setting it low.  The CS and SDI continues to function as if it has a data to store to the DAC.  We are finding that the DAC does not always hold it's last value just before we disable the clock.  Is it possible that a new D13 value is being stored into the DAC when the CS transitions low to high?

Thanks,

-John