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  3. AR# 44540: MIG 7 Series v1.3 DDR3 - Example Design Does Not Generate any Traffic in Hardware with Debug Feature Enabled

AR# 44540

MIG 7 Series v1.3 DDR3 - Example Design Does Not Generate any Traffic in Hardware with Debug Feature Enabled

Description

When running the MIG 7 Series v1.3 DDR3 Example Design with the Debug feature enabled, (DEBUG_PORT=="ON") in the hardware, the traffic is not generated.

Solution

This is a known issue with the design that only occurs when the Debug feature is enabled.To work around this, locate the following snippet of code in the example_top.v module:

generate
if (DEBUG_PORT=="ON") begin: CHIPSCOPE_INST

assign ddr3_cs0_clk = clk;
assign ddr3_cs4_clk = clk;
assign vio_modify_enable = ddr3_vio3_sync_out[36];
assign vio_data_mode_value = ddr3_vio3_sync_out[40:37];
assign vio_addr_mode_value = ddr3_vio3_sync_out[43:41];
assign vio_instr_mode_value = ddr3_vio3_sync_out[47:44];
assign vio_bl_mode_value = ddr3_vio3_sync_out[49:48];
assign vio_fixed_bl_value = ddr3_vio3_sync_out[57:50];
assign vio_data_mask_gen = ddr3_vio3_sync_out[58];
assign vio_pause_traffic = ddr3_vio3_sync_out[59];
assign vio_fixed_instr_value = ddr3_vio3_sync_out[62:60];
assign dbg_clear_error = ddr3_vio3_sync_out[63];
assign ddr3_vio1_async_in[200] = tg_compare_error;

Traffic is not generated because these values are undefined.To enable traffic generation, hard code the following ports:
.vio_pause_traffic (1'b0),
.vio_bl_mode_value (2'b10),
.vio_fixed_bl_mode (8'd64),
.vio_fixed_instr_value (3'b001),
.vio_data_mask_gen (1'b01),

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
AR# 44540
Date 05/22/2012
Status Active
Type Known Issues
Devices
  • Artix-7
  • Kintex-7
  • Virtex-7
IP
  • MIG 7 Series