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fifo_rd_underflow is unconnected. Is it an error?

Question asked by IPrium on Nov 5, 2017
Latest reply on Apr 13, 2018 by CsomI



Is it an error?


I'm using ZedBoard+FMCOMMS4 and I want to use DAC REG_UI_STATUS UI_UNF bit from here
AXI_AD9361 [Analog Devices Wiki] 


It works as expected in hdl_2016_r1, but not in hdl_2016_r2 and hdl_2017_r1.


I did simple check:
(1) hdl_2016_r1
hdl/fmcomms2_bd.tcl at hdl_2016_r1 · analogdevicesinc/hdl · GitHub 
axi_ad9361_dac_dma/fifo_rd_underflow is connected to axi_ad9361/dac_dunf


(2) hdl_2016_r2 and hdl_2017_r1
hdl/fmcomms2_bd.tcl at hdl_2016_r2 · analogdevicesinc/hdl · GitHub 
hdl/fmcomms2_bd.tcl at hdl_2017_r1 · analogdevicesinc/hdl · GitHub 
fifo_rd_underflow is not connected to any port.


If I connect fifo_rd_underflow to axi_ad9361/dac_dunf in hdl_2016_r2 and hdl_2017_r1 all work as


Danil Shendrik, IPrium LLC