Re: [Discuss-gnuradio] Questions Regarding Schematic Files and their Contents

[Matt Ettus]

Fahimeh Rezaei wrote:
> Hi Dear All friends
> I have two questions about some parts of schematic files
> 1- in the powe page, there are some capesitors which are connected 
> between GND and different Voltages (DVDD, VDD5:1,....), I tend to know 
> if there is any relationship between the number of capecitors and the 
> voltage which is connected to them and GND? for instance I could figure 
> out that the number of capecitors which are connected to DVDD:1 and GND 
> is 24 while the number of pins are 12 (12 220pF and 0.1uF pair), however 
> for VCC1:5 I could not found exact relationship! can anybody help me in 
> this issue?


We try to get at least one cap per power pin, but sometimes there are 
more or less.

> 2- some of the values for resistors are not clear for instance in 
> clocking page of schematic resistors which are connected to S[0..10] 
> pins of AD9513 have no distict value. I'm wondering if anyone can help 
> me regarding this problem!

The AD9513 datasheet will give you enough information to figure out 
which resistors are populated and which are not.

Matt