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Registered: ‎03-28-2020

LUTAR #2 Warning LUT cell dbg_hub/inst/BSCANID.u_xsdbm_id/CORE_XSDB.UUT_MASTER/U_ICON_INTERFACE/U_CMD6_RD/U_RD_FIFO/SUBCORE_FIFO.xsdbm_v3_0_0_rdfifo_inst/inst_fifo_gen/gconvfifo.rf/grf.rf/rstblk/ngwrd

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LUTAR #2 Warning LUT cell dbg_hub/inst/BSCANID.u_xsdbm_id/CORE_XSDB.UUT_MASTER/U_ICON_INTERFACE/U_CMD6_RD/U_RD_FIFO/SUBCORE_FIFO.xsdbm_v3_0_0_rdfifo_inst/inst_fifo_gen/gconvfifo.rf/grf.rf/rstblk/ngwrdrst.grst.g7serrst.gwrrd_rst_sync_stage[2].rrst_inst/ngwrdrst.grst.g7serrst.rd_rst_reg[2]_i_1, with 2 or more inputs, drives asynchronous preset/clear pin(s) dbg_hub/inst/BSCANID.u_xsdbm_id/CORE_XSDB.UUT_MASTER/U_ICON_INTERFACE/U_CMD6_RD/U_RD_FIFO/SUBCORE_FIFO.xsdbm_v3_0_0_rdfifo_inst/inst_fifo_gen/gconvfifo.rf/grf.rf/rstblk/ngwrdrst.grst.g7serrst.rd_rst_reg_reg[0]/PRE, dbg_hub/inst/BSCANID.u_xsdbm_id/CORE_XSDB.UUT_MASTER/U_ICON_INTERFACE/U_CMD6_RD/U_RD_FIFO/SUBCORE_FIFO.xsdbm_v3_0_0_rdfifo_inst/inst_fifo_gen/gconvfifo.rf/grf.rf/rstblk/ngwrdrst.grst.g7serrst.rd_rst_reg_reg[1]/PRE, dbg_hub/inst/BSCANID.u_xsdbm_id/CORE_XSDB.UUT_MASTER/U_ICON_INTERFACE/U_CMD6_RD/U_RD_FIFO/SUBCORE_FIFO.xsdbm_v3_0_0_rdfifo_inst/inst_fifo_gen/gconvfifo.rf/grf.rf/rstblk/ngwrdrst.grst.g7serrst.rd_rst_reg_reg[2]/PRE. The LUT may glitch and trigger an unexpected reset, even if it is a properly timed path.

 

Hello everyone, we are doing some reconfigurable experiments on MPSoC ( VIVADO2019.1 xczu2eg ). After we performed the placement and routing and successfully generated the bitstream file, we found the above warnings. I don't quite understand the meaning of these warnings. What does it mean?

In addition, we encountered a problem after performing partial reconfiguration. When we first configured the FPGA's global configuration, downloading .elf through the SDK can run normally, but when we perform partial reconfiguration for the second time, the dynamic area The module becomes unable to access the memory connected to the PS side normally.

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