AR# 63261

UltraScale DDR3/DDR4/QDRII+ - Multi-driver errors found during LINT check


Version Found: DDR3 v6.1, DDR4 v6.1, QDRII+ v6.1

Version Resolved: See (Xilinx Answer 69036) for DDR3, (Xilinx Answer 69035) for DDR4, and (Xilinx Answer 69038) for QDRII+.

W415 multi-driver errors can occur when running the SpyGlass Lint Check on MIG UltraScale DDR3, DDR4, or QDRII+ design.

For example:

[629] W415   Error  ./mig_0_example/mig_0_example.srcs/sources_1/imports/mig_0/rtl/ip_top/          175     10    Signal 'example_top.c0_ddr4_app_rd_data[63:0]' has multiple simultaneous drivers
[27D] W415  Error   mig_0_example/mig_0_example.srcs/sources_1/ip/mig_0/ip_0/rtl/phy/            1093    10    Signal '' has multiple simultaneous drivers


These multi-driver errors can occur during the Lint check for:

  • signal 'example_top.c0_ddr4_app_rd_data[63:0]' located inside for DDR3 and DDR4 designs
  • signal '' located inside for QDRII+ designs.

These multi-driver error messages occur only during the Lint check and are safe to ignore as the Vivado synthesis tool handles these signals properly.

Revision History:

01/08/2015 - Initial Release



AR# 63261
日期 12/15/2017
状态 Active
Type 已知问题
器件 More Less
IP More Less