Continue to Site

Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics 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.

Free Running Clock???

Status
Not open for further replies.

satiah

Newbie level 6
Joined
Jun 7, 2006
Messages
11
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,281
Location
Bangalore, India
Activity points
1,351
what is free running clock

Hi,

Can anybody tell me what is free running clock??

Thanks in advance......
 

Please satiah can you be more precise. Where did you found this ?
 

Even i got the information like PLL input clock is free running clock correct me if am wrong... i want to know why it is called so.....
 

Hi,
From the beginning I gussed that but I had doubts.
You all know that power is a hot issue nowadays. Many techniques for reducing power appeared (Low power techniques, Asynchronous devises, GALS, low power CMOS design etc)
A techniques among these used in new devices composed of multi-submodule is to activate them by letting the clock reach them. This is ensured by a specific controler . Submodules are disabled by the same way when there is no need to them. Obviously, disabling this submudules saves power.
The clock passing controller must be all the time in action because without it system can't run correctly. That's why he is drived by a continuous clock signal or if you like a "free running clock".
 

Status
Not open for further replies.

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top