Tech-No!: Clock Domain Crossing (CDC)

1) Understanding Clock Domain Crossing Issues:
The following link describes the basics of Clock Domain Crossing (CDC) and its 3 main issues namely: A) Metastability, B) Data Loss & C) Data Incoherency and the solutions to these issues.
http://www.edadesignline.com/howto/205201913;jsessionid=TR5Q53DPD0BRSQSNDLRSKHSCJUNN2JVN