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AR# 44759 MIG 7 Series v1.3 - No traffic is generated in hardware when DEBUG is enabled

Description

The MIG 7 Series v1.3 DDR3 design fails to generate traffic in hardware when the Debug Signals for the Memory Controller is turned ON (DEBUG = ON).

Solution

No traffic is seen as a result of an incorrect initialization assignment to "bl_mode_sel".The traffic_gen module "init_mem_pattern_ctr.v" requires correcting the initialization of the register "bl_mode_sel". Please make the following correction before running in hardware with DEBUG enabled:

init_mem_pattern_ctr.v
line 653 always @ (posedge clk_i)
line 654 begin
line 655 if (rst_i )
line 656 bl_mode_sel <= vio_bl_mode_value;
line 657 else if (test_mem_instr_mode[3])
line 658 bl_mode_sel <= 2'b11;
line 659 else if (vio_modify_enable == 1'b1) begin
line 660 bl_mode_sel <= vio_bl_mode_value;
line 661 end
line 662 end

replace with:

line 653 always @ (posedge clk_i)
line 654 begin
line 655 if (rst_i )
line 656 bl_mode_sel <= FIXED_BL_MODE;
line 657 else if (test_mem_instr_mode[3])
line 658 bl_mode_sel <= 2'b11;
line 659 else if (vio_modify_enable == 1'b1) begin
line 660 bl_mode_sel <= vio_bl_mode_value;
line 661 end
line 662 end

Thisis scheduled to befixed in the 13.4 release with MIG 7 Series v1.4.

Linked Answer Records

Master Answer Records

Answer Number Answer Title Version Found Version Resolved
43099 MIG 7 Series v1.3 - Release Notes and Known Issues for ISE Design Suite 13.3 N/A N/A

Associated Answer Records

Answer Number Answer Title Version Found Version Resolved
43099 MIG 7 Series v1.3 - Release Notes and Known Issues for ISE Design Suite 13.3 N/A N/A

Actions

AR# 44759
Date Created 10/28/2011
Last Updated 05/22/2012
Status Active
Type Known Issues
Devices
  • Kintex-7
  • Virtex-7
IP
  • MIG 7 Series
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