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Re: [Discuss-gnuradio] Logic utilization of standard USRP2 configuratio

From: Johnathan Corgan
Subject: Re: [Discuss-gnuradio] Logic utilization of standard USRP2 configuration
Date: Tue, 21 Apr 2009 09:31:44 -0700

On Tue, Apr 21, 2009 at 9:17 AM, Carl Ingemarsson
<address@hidden> wrote:

> I wonder how much of the FPGA on the USRP2 that is utilized.

We're using about half the logic, most of the block rams, and about
half the multipliers.

>From the synthesis report of the current trunk:

Device utilization summary:

Selected Device : 3s2000fg456-5

 Number of Slices:                    11104  out of  20480    54%
 Number of Slice Flip Flops:          12657  out of  40960    30%
 Number of 4 input LUTs:              20212  out of  40960    49%
    Number used as logic:             18130
    Number used as Shift registers:    1058
    Number used as RAMs:               1024
 Number of IOs:                         309
 Number of bonded IOBs:                 301  out of    333    90%
    IOB Flip Flops:                     261
 Number of BRAMs:                        34  out of     40    85%
 Number of MULT18X18s:                   16  out of     40    40%
 Number of GCLKs:                         6  out of      8    75%
 Number of DCMs:                          1  out of      4    25%

> And also: Is it expected that the configuration will grow from the current
> size?



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