There are different classification in which the timing control data is DIVIDED and they are:

1. Delay BASED timing control: this is based on timing control that allows to manage the component such that the delay can be notified and wherever it is required it can be given. The delays that are based on this are as:
   
   - Regular delay control: that controls the delay on the regular basis.
   - Intra-assignment delay control: that controls the internal delays.
   - Zero delay control
   
   
2. Events based timing control: this is based on the events that are performed when an event happens or a TRIGGER is set on an event that takes place. It includes
   
   - Regular event control
   - Named event control
   - Event OR control
   
   
3. Level sensitive timing control: this is based on the levels that are given LIKE 0 level or 1 level that is being given or shown and the data is being modified according the levels that are being set. When a level changes the timing control also changes.

There are different classification in which the timing control data is divided and they are: