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AR# 51407

Vivado 2013.4 - デザインに未制約ピンがあると、ビットストリーム生成で DRC エラーが発生する

説明

未制約ピンのあるデザインのビットストリームを生成すると、次のような DRC エラーが発生します。

Running DRC as a precondition to command write_bitstream

ERROR: [Drc 23-20] Rule violation (NSTD-1) Unspecified I/O Standard - 3 out of 45 logical ports use I/O standard (IOSTANDARD) value 'DEFAULT', instead of a user assigned specific value. This may cause I/O contention or incompatibility with the board power or connectivity affecting performance, signal integrity or in extreme cases cause damage to the device or the components to which it is connected. To correct this violation, specify all I/O standards. This design will fail to generate a bitstream unless all logical ports have a user specified I/O standard value defined. To allow bitstream creation with unspecified I/O standard values (not recommended), use set_property BITSTREAM.General.UnconstrainedPins {Allow} on the current design. Problem ports: init_calib_complete, sys_rst, tg_compare_error.

ERROR: [Drc 23-20] Rule violation (UCIO-1) Unconstrained Logical Port - 3 out of 45 logical ports have no user assigned specific location constraint (LOC). This may cause I/O contention or incompatibility with the board power or connectivity affecting performance, signal integrity or in extreme cases cause damage to the device or the components to which it is connected. To correct this violation, specify all pin locations. This design will fail to generate a bitstream unless all logical ports have a user specified site LOC constraint defined. To allow bitstream creation with unspecified pin locations (not recommended), use set_property BITSTREAM.General.UnconstrainedPins {Allow} on the current design. Problem ports: init_calib_complete, sys_rst, tg_compare_error.

この問題の回避策を教えてください。

ソリューション

Vivado ツールでは、TCL コンソールで次のプロパティを入力してデフォルトの動作を上書きしない限り、未制約 I/O を含むデザインのビットストリームは生成できません。

set_property BITSTREAM.General.UnconstrainedPins {Allow} [current_design]
AR# 51407
作成日 08/21/2012
最終更新日 02/05/2014
ステータス アクティブ
タイプ 一般
ツール
  • Vivado Design Suite