FreeLists / si-list / [SI-LIST] Re: HSPICE-MEASUREMENTS

[manthos labropoulos <manthoslmp@xxxxxxxx>]

Sorry about the inacurancy of my question.

I mean that i have an 8-bit bus and i am doing
simulations for 1000 bytes (8-bits) sent in the bus. 

So in each line there are 1000 bits simulated.

I also have a clock in my simulations in order to have
it as a reference for measuring the delay.

The problem is that i don't know when there is a
transition in each line. 

So how can i use .meas to measure the delay between
the line and the clock ?

Thank you for your time
Matheos

--- Itzik Peleg <itzikpe@xxxxxxxxxxxxxx> έγραψε: >
Hello Manthos
> 
> If I got you right, You need to measure the delay
> rise to rise and fall
> to fall for 1000 bits, when there are several lines
> to measure (bus) and
> then get the max min average etc.
> Yes there is a way of doing that:
> 1. Make a .subckt the include all the measurements
> you need for one bit
> in the bus. The subckt nodes like in and out will be
> the nodes to
> measure (like probe contacts). you can use excel to
> make such a file.
> 2. Call the subckt as many times as needed for the
> bus bits.
> 3. cut the data from the .lis file to an excel
> spreadsheet and make your
> analysis.
> 
> example:
> 
> 
> .subckt meas_bit in out
> .maesure tran bit_1 trig V(in)  Val=1.5 cross=1
> +                   targ V(out) Val=1.5 cross=1
> .maesure tran bit_2 trig V(in)  Val=1.5 cross=2
> +                   targ V(out) Val=1.5 cross=2
> .
> .
> .
> .ends
> 
> 
> xmeas_data_1  data_drv_1  data_rcv_1 meas_bit
> xmeas_data_2  data_drv_1  data_rcv_2 meas_bit
> 
> In this example data_drv_1 is the driver of data 1
> and data_rcv_1 is the
> receiver of data 1.
> 
> Hope that help.
> 
> --
> Regards
> 
> Itzik Peleg
> Board Technology Group
> 
> ** PLEASE NOTE NEW PHONE AND FAX NUMBERS **
> 
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