i was reading a data sheet for anintegrated circuit on digikey, and it said to attachh a 24mhz crystal to one of the pins. this mostly makes sense, as i just connect the pin to one of the terminals of the crystal. but what do i connect the other terminal to? i know that power has to run through it, and it would seem instinctive to connect it to vcc/vdd, but i wanted to be sure what to do. here is exactly what the datasheet says:
| Pin # | Symbol | Buffer Type | Description |
|---|---|---|---|
| 22 | XTALIN/CLKIN | ICLKx | 24MHz Crystal or External Clock Input This pin connects to one terminal of the crystal, or to an external 24MHz clock when a crystal is not used. |
Brand new interactions and interfaces. 
Easy to use and quick to get started. 
Do you have a link to the datasheet? There's normally a XTALIN and an XTALOUT.
Mike.