SD-RAM signal connection to ZYNQ

Status
Not open for further replies.
E

engr_joni_ee

Advanced Member level 3
Joined
Nov 3, 2018
Messages
750
Helped
2
Reputation
4
Reaction score
4
Trophy points
18
Activity points
6,231
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 #
 

Hi, Now I have found signal connections but I am wondering about some signals (RAS#, CAS#, WE#). What are these signals for ?
 

joniengr said:
Hi, Now I have found signal connections but I am wondering about some signals (RAS#, CAS#, WE#). What are these signals for ?
Click to expand...
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.
 

Status
Not open for further replies.

Similar threads

Menu
Log in
Register
Cookies are required to use this site. You must accept them to continue using the site. Learn more…