From 1dc522c55933c7c667899fbe8a281a4f18ecbf39 Mon Sep 17 00:00:00 2001 From: Jens Ahrensfeld Date: Sat, 23 May 2015 09:33:27 +0000 Subject: [PATCH] - keep clk0 git-svn-id: http://moon:8086/svn/vhdl/trunk@1175 cc03376c-175c-47c8-b038-4cd826a8556b --- lib/SDRAM/ddr_sdr_v1_5/src/ddr_phy_virtex4.vhd | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/lib/SDRAM/ddr_sdr_v1_5/src/ddr_phy_virtex4.vhd b/lib/SDRAM/ddr_sdr_v1_5/src/ddr_phy_virtex4.vhd index ef9f524..1c58a02 100644 --- a/lib/SDRAM/ddr_sdr_v1_5/src/ddr_phy_virtex4.vhd +++ b/lib/SDRAM/ddr_sdr_v1_5/src/ddr_phy_virtex4.vhd @@ -95,7 +95,11 @@ architecture tech of sdram_phy is type u_tag_array_t is array (natural range 0 to 4) of user_tag_t; signal u_tag_pipe : u_tag_array_t; -begin + attribute KEEP : string; + attribute KEEP of clk0 : signal is "TRUE"; + +begin + clk0_out <= clk0_s; clk0 <= clk0_s after 10 ps; -- fix delta delay rst0_out <= rst0;