WCK is the Write strobe; RDQS is the Read strobe.
Gang
On Wed, Jul 24, 2019 at 4:17 PM Sparsh Patwa <patwa.sparsh@xxxxxxxxx> wrote:
Hello All,
Iâm trying to understand the new clocking architecture for LPDDR5 and
wanted to see if someone can explain what is the need for a RDQS mode when
the WCK can clock data on both write and read cycles ?
The Feb 2019 spec from JEDEC introduces WCK clocking and explains that the
CA bus operates at a lower clock CK where as the DQ bus operates off this
new WCK clock which can be 4x the speed of CK; and it can be used to sample
DQ for write and read operations however there is also a RDQS mode where
RDQS can be sent along with DQ during read cycles to same read data.
Maybe Iâm missing something here but why have WCK and RDQS if they are
used for the same purpose ?
Thanks,
Sparsh
------------------------------------------------------------------
To unsubscribe from si-list:
si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field
or to administer your membership from a web page, go to:
//www.freelists.org/webpage/si-list
For help:
si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field
List forum is accessible at:
http://tech.groups.yahoo.com/group/si-list
List archives are viewable at:
//www.freelists.org/archives/si-list
Old (prior to June 6, 2001) list archives are viewable at:
http://www.qsl.net/wb6tpu
