On Tue, Apr 24, 2007 at 10:02:47AM -0400, Nikhil wrote: > >Oops! You've now smoked two RFX-2400 boards and/or the FPGA ;) > > > Bzzzt! Ok thanks. Your explanation helped clear up my confusion about > the RX and TX nets in the schematic and prevented frying my boards as well. > ;) > > >(I _believe_ that the high 7-bits are available for your use. It mightbe > 8, but I haven't looked at the >schematics in a _long_ time. I'm notkidding > when I say _you_ should check the schematics.) > Yes it is only the 7 msbs. > > > > >If you can get by with a single RFX-2400, my suggestion is that you > >put it on the A-side, and then put a Basic Tx and a Basic Rx on the > >B-side. Then you've got a total of 32 uncommitted i/o pins on the > >B-side. > > > > This is a good idea. So if I insert one of each Basic Tx and Rx on side B, > with the RFX2400 on side A, then the following should work (?) > > u = usrp.source_c(0, 64) > u._write_oe(1, 0xffff, 0xffff) > u._write_fpga_reg(FR_DEBUG_EN, bmFR_DEBUG_EN_RX_B | bmFR_DEBUG_EN_TX_B) > > and then in usrp_std.v > master_control master_control > (.... > //.debug_0(rx_a_a),.debug_1(ddc0_in_i), > .debug_0(rx_debugbus),.debug_1(ddc0_in_i), > .debug_2(rx_a_a),.debug_3(rx_b_a), .... );
Yes. You may want to consider running a clock up there too, since otherwise it's going to hard to figure out when you've got good data. You've got enough pins, since the data's only 12-bits wide. Eric _______________________________________________ Discuss-gnuradio mailing list [email protected] http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
