Method of operating system on chip and apparatuses including the same

摘要

A method of operating a system on chip (SoC), an integrated circuit including the SoC, and a system including the same are provided. The method includes: delaying a data strobe signal; obtaining a setup margin and a hold margin by adjusting a delay of the delayed data strobe signal; and determining a data valid window using the obtained setup margin and the obtained hold margin.

主权项

1. A method of operating a system on chip (SoC) including a central processing unit (CPU), the method comprising:
receiving a data strobe signal from a memory device, delaying the data strobe signal, and generating a first data strobe signal that has a 90- degree phase shift from the data strobe signal, a second data strobe signal that has less of a phase shift than the first data strobe signal, and a third data strobe signal that has more of a phase shift than the first data strobe signal; obtaining a setup margin based on a delay difference between the first data strobe signal and the second data strobe signal using a test program executed by the CPU; obtaining a hold margin based on a delay difference between the first data strobe signal and the third data strobe signal using the test program; and determining a data valid window based on the obtained setup margin and the obtained hold margin using the test program.