描述

[Synth 8-3493] module 'async_fifo' declared at 'C:/Xilinx/14.3/ISE_DS/ISE/coregen/ip/xilinx/primary/com/xilinx/ip/fifo_generator_v8_1/ramfifo/async_fifo.vhd:91' does not have matching formal port for component port 'clk' ["C:/my_project/project_1/project_1.srcs/sources_1/imports/example_design/async_fifo_exdes.vhd":118]
[Synth 8-3493] module 'async_fifo' declared at 'C:/Xilinx/14.3/ISE_DS/ISE/coregen/ip/xilinx/primary/com/xilinx/ip/fifo_generator_v8_1/ramfifo/async_fifo.vhd:91' does not have matching formal port for component port 'rst' [C:/my_project/project_1/project_1.srcs/sources_1/imports/example_design/async_fifo_exdes.vhd":118]
[Synth 8-3493] module 'async_fifo' declared at 'C:/Xilinx/14.3/ISE_DS/ISE/coregen/ip/xilinx/primary/com/xilinx/ip/fifo_generator_v8_1/ramfifo/async_fifo.vhd:91' does not have matching formal port for component port 'wr_en' [C:/my_project/project_1/project_1.srcs/sources_1/imports/example_design/async_fifo_exdes.vhd":118]
[Synth 8-3493] module 'async_fifo' declared at 'C:/Xilinx/14.3/ISE_DS/ISE/coregen/ip/xilinx/primary/com/xilinx/ip/fifo_generator_v8_1/ramfifo/async_fifo.vhd:91' does not have matching formal port for component port 'rd_en' ["C:/my_project/project_1/project_1.srcs/sources_1/imports/example_design/async_fifo_exdes.vhd":118]
[Synth 8-3493] module 'async_fifo' declared at 'C:/Xilinx/14.3/ISE_DS/ISE/coregen/ip/xilinx/primary/com/xilinx/ip/fifo_generator_v8_1/ramfifo/async_fifo.vhd:91' does not have matching formal port for component port 'din' ["C:/my_project/project_1/project_1.srcs/sources_1/imports/example_design/async_fifo_exdes.vhd":118]
[Synth 8-3493] module 'async_fifo' declared at 'C:/Xilinx/14.3/ISE_DS/ISE/coregen/ip/xilinx/primary/com/xilinx/ip/fifo_generator_v8_1/ramfifo/async_fifo.vhd:91' does not have matching formal port for component port 'dout' ["C:/my_project/project_1/project_1.srcs/sources_1/imports/example_design/async_fifo_exdes.vhd":118]
[Synth 8-285] failed synthesizing module 'async_fifo_exdes' ["C:/my_project/project_1/project_1.srcs/sources_1/imports/example_design/async_fifo_exdes.vhd":89]

解决方案

This issue occurs when the following conditions are all true:

• The FIFO Generator IP core was created with CORE Generator.
• The IP core name is the same as a file in the installation for the FIFO Generator cores (for example async_fifo.vhd).
• The .ngc file is included but there is no HDL wrapper file with the same name.
  

 Vivado is finding the HDL file delivered with the ISE DS installation that has not been customized to match any user parameters and contains all available ports.

Possible workarounds are as follows:

• Re-generate the FIFO Generator core with a different name.
• Create an HDL wrapper file with the same base name as the .ngc file and place it in the IP core directory.
  
• Run XST synthesis as this issue only occurs with Vivado.

This issue has been fixed in Vivado release 2013.2.