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AR# 21648

LogiCORE Ethernet 1000BASE-X PCS/PMA or SGMII v6.0 Core - Simulation fails in 7.1i Service Pack 3 because RX_LOS_INVALID_INCR and RX_LOS_THRESHOLD signals are missing from SmartModel

Description

General Description: 

Simulations of the LogiCORE Ethernet 1000BASE-X PCS/PMA or SGMII v6.0 Core that are targeted to Virtex-4 FX devices, fail to load during simulation in 7.1i Service Pack 3 that previously worked in 7.1i Service Pack 2. Specifically, both Verilog and VHDL simulations fail with errors similar to the following with respect to RX_LOS_INVALID_INCR and RX_LOS_THRESHOLD signals: 

 

 # ** Error: (vsim-3043) ../../example_design/transceiver.v(969): Unresolved reference to 'RX_LOS_INVALID_INCR' in GT11_1000X_1_INST.RX_LOS_INVALID_INCR. 

 # Region: /testbench/DUT/transceivers_i 

 # ** Error: (vsim-3043) ../../example_design/transceiver.v(970): Unresolved reference to 'RX_LOS_THRESHOLD' in GT11_1000X_1_INST.RX_LOS_THRESHOLD. 

 # Region: /testbench/DUT/transceivers_i 

Solution

The problem is that the RX_LOS_INVALID_INCR and RX_LOS_THRESHOLD signals have been removed from the Virtex-4 GT11 SmartModels in 7.1i Service Pack 3. 

 

A patch is available to resolve this issue. To obtain this fix, install the patch that is available in the LogiCORE Ethernet 1000BASE-X PCS/PMA or SGMII v6.0 Core Release Notes and Known Issues Answer Record (Xilinx Answer 21045) and then regenerate the core.

AR# 21648
Date Created 09/04/2007
Last Updated 05/19/2014
Status Archive
Type General Article