Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronic Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Register Log in

SD-RAM signal connection to ZYNQ

joniengr

Full Member level 4
Joined
Nov 3, 2018
Messages
202
Helped
1
Reputation
2
Reaction score
1
Trophy points
18
Activity points
1,819
Hi, I am using SD-RAM (MT41K256M16) with ZYNQ 7030 in a test board PCB layout. I have question regarding the following signals at the SD-RAM side. How should they be connected to the ZYNQ and which pins in PS BANK 502 in ZYNQ ?
  • LDM and UDM
  • LDQS, LDQS #
  • UDQS, UDQS #
 

joniengr

Full Member level 4
Joined
Nov 3, 2018
Messages
202
Helped
1
Reputation
2
Reaction score
1
Trophy points
18
Activity points
1,819
Hi, Now I have found signal connections but I am wondering about some signals (RAS#, CAS#, WE#). What are these signals for ?
 

ads-ee

Super Moderator
Staff member
Joined
Sep 10, 2013
Messages
7,652
Helped
1,774
Reputation
3,554
Reaction score
1,722
Trophy points
1,393
Location
USA
Activity points
57,812
Hi, Now I have found signal connections but I am wondering about some signals (RAS#, CAS#, WE#). What are these signals for ?
RAS# row address strobe
CAS# column address strobe
WE# write enable

These three bits are used as commands for the various operations that are performed by the SDRAM. The order in which the signals toggle can determine what mode the SDRAM is in. You need to read a DDR3 SDRAM datasheet to understand how the signals control the transfers. It's a bit too much to copy to the forum.
 

Toggle Sidebar

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Top