Homework6.10 - once b Assuming that the power to drive the...

Info icon This preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
ECE 124d Homework 6 Due: Wed Feb. 17, 2010 Reading: DSE chapter 5 (you may skip 5.2): a. inductive power noise b. logic power profile c. on-chip bypass d. symbiotic bypass Read “Decoupling References” and “Symbiotic Bypass Estimation” on line Problems: p. 256, 5.1 (check your model with spice), 5.2, 5.11a, 5.12, 5.13, 5.15 7. Consider a small processor with a 2.5V, 80-bit DDR communication bus operating at 366MHz (1.0 nS rise and fall times). a. If this bus is driving 60 lines on a PC-board, what is the worst case dI/dt if all lines switch at
Image of page 1
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: once? b. Assuming that the power to drive the board comes from off chip, what is the maximum allow-able inductance of the power and ground supplies to the chip to limit the voltage drop and ground bounce to 0.25V? How many power/ground bumps will this require at 0.5 nH/bump? c. Assuming activity on the bus 15% of the time on average, with source termination (i.e. no DC power) estimate the average power to drive the DDR bus....
View Full Document

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern