Class Notes (838,403)
Canada (510,881)
CSC258H1 (46)
Lecture

mar08ce.docx

1 Page
65 Views
Unlock Document

Department
Computer Science
Course
CSC258H1
Professor
Steve Engels
Semester
Winter

Description
o Timing waveforms  Week 8 Review  Reading and writing of signals to and from memory is expensive o Q1: a RAM unit has 6 address bits going into it; given a 32-bit  Several clock cycles to access memory vs. 1 clock cycle for architecture, how many 6ytes is the RAM unit able to store? accessing registers  6 address bits  2 lines of memory  Different architecture will have different delays  Total: 64 lines of memory (memory slots)  In this example there is a 75ns write cycle between the start of  32-bit architecture  4 bytes per memory address the write process and the point at which the write process is  RAM capacity = 64*6 = 256 bytes of memory complete o Q2:  Interval 1 = Setup Address Time  for the address to be written at to be available for writing  Interval 2 = Setup Data Time  for the data values to written at the address  Interval 3 = Hold Data Time  To signal done writing, make sure address stop writing well before data becomes invalid/unavailable  Timing constraints for reading from memory  Address Acces Time (t ) – time needed for address AA values to be stable before reading data values (~10ns)  Output Hold Address (t OHA) – time to hold data high after address values change b/c of time takes to send received ack msg to address means data will hold out a bit longer after address is invalid  Read easy b/c basically is listening, doesn’t need to o Q3 change Read/Write signal
More Less

Related notes for CSC258H1

Log In


OR

Join OneClass

Access over 10 million pages of study
documents for 1.3 million courses.

Sign up

Join to view


OR

By registering, I agree to the Terms and Privacy Policies
Already have an account?
Just a few more details

So we can recommend you notes for your school.

Reset Password

Please enter below the email address you registered with and we will send you a link to reset your password.

Add your courses

Get notes from the top students in your class.


Submit