MEMS Oscillators - DSC60xx - Choosing an Oscillator that Ouputs kHz Frequency
Pin 1 on the DSC60xx series determines if the oscillator can output kHz frequency. If it is DSC608x, it means that the oscillator can output kHz frequency on pin 1. These parts do not have an enable or standby function.
For more information, please read the "Product Identification System" section of the datasheet.