Re: [Discuss-gnuradio] USRP2 FPGA USAGE

[Matt Ettus]

Uwe Bonnes wrote:
> Dear Matt or anybody else using USRP2,
>
> can anybody give us the usage pattern of the USRP2 FPGA, e.g. what is needed by
> the AEMB, by the Ethernet MAC, for signal processing and any other part
> eating up a substantial part of the resources?
>
> To get the number, Webpack isn't enough...
>   


Keep in mind that the real constraint on what fits is actually Block RAM 
-- we are currently using 37 out of 40 of them, and it is the reason we 
had to move up to the 2000 part instead of the 1500.  We have a huge 
amount of extra logic (slices) and multipliers available for users.   We 
are currently using 16 out of 40 multipliers and less than 40% of the 
~40,000 LUTs and Flops.

Item         Slices      BRAM
Eth            ~2500         7
aeMB         1128         0
serdes          550         2
dsp_tx         2373        0
dsp_rx         2807        0
buffer pool   1416         8
rx sample fifo               2
tx sample fifo               2
main ram for proc         16

Matt