A DATA PROCESSING ACCELERATOR HAVING A LOCAL TIME UNIT TO GENERATE TIMESTAMPS

摘要

A DP accelerator (405) includes one or more execution units (EUs) configured to perform data processing operations in response to an instruction received from a host system coupled over a bus. The DP accelerator (405) includes a security unit (1020) configured to establish and maintain a secure channel with the host system to exchange commands and data associated with the data processing operations. The DP accelerator (405) includes a time unit (2003) coupled to the security unit (1020) to provide timestamp services to the security unit (1020), where the time unit (2003) includes a clock generator to generate clock signals locally without having to derive the clock signals from an external source. The time unit includes a timestamp generator coupled to the clock generator to generate a timestamp based on the clock signals, and a power supply to provide power to the clock generator and the timestamp generator.