Double rate registor for DQ and DQS DDR in SDRAM controller ?

Status
Not open for further replies.
K

k621219

Newbie level 6
Joined
Apr 2, 2009
Messages
12
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,281
Activity points
1,367
ASIC Double rate register for DQ and DQS DDR in SDRAM controller ?

I am developing DDR2 SDRAM controller.
In FPGA, I used a double rate register.
In ASIC, What kind of logic do I need to use for double rate register?
 

Hi,

I think for DDR input you need to use a posedge and a negedge flipflop
For the ouput you need to multiplexer two flip flip outputs. The multiplexer is controled by your clock

regards
 

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…