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AR# 33812

11.3 EDK, MPMC v5.03.a - ERROR:Xst:528 - Multi-source in Unit <s6_phy_top> on signal <PI_RdFIFO_Data<52>>

Description

Keywords: multiple, drivers, UODONECAL, XST

When using MPMC v5.03.a in Spartan-6 FPGA, the following error occurs. How do I resolve this issue?
ERROR:Xst:528 - Multi-source in Unit <s6_phy_top> on signal <PI_RdFIFO_Data<52>>; this signal is connected to multiple drivers.
Drivers are:
Output port MCB:UODONECAL of instance <MPMC_0/mpmc_core_0/gen_spartan6_mcb.s6_phy_top_if/mpmc_mcb_raw_wrapper_0/samc_0>
Dangling signal <MPMC_0/mpmc_core_0/gen_spartan6_mcb.s6_phy_top_if/PI_RdFIFO_Data<52>> in Unit <s6_phy_top> is tied to 0 by XST

Solution

This issue is fixed in MPMC v5.04.a, to be released in EDK 11.4.
AR# 33812
Date Created 11/12/2009
Last Updated 11/12/2009
Status Active
Type General Article