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AR# 60951

UltraScale RLDRAM3/QDRII+ - Timing failure from XiPHY to riu_clk

Description

Version Found: RLDRAM3 v5.0 (Rev. 1), QDRII+ v5.0 (Rev .1)

Version Resolved: See (Xilinx Answer 69037) for RLDRAM3, See (Xilinx Answer 69038) for QDRII+

The following path can fail timing for MIG UltraScale RLDRAM3 and QDRII+ designs as a result of a long route delay.


Slack (VIOLATED) :        -0.206ns  (required time - arrival time)
  Source:                 u_SN66_virtexuQDRIIPLUS_vlog_475MHz_vivado/inst/u_qdriip_phy/phycal/phy/byteWrap[1].u_xiphy_byte_wrapper/I_CONTROL[1].GEN_I_CONTROL.u_xiphy_control/xiphy_control/TX_BIT_CTRL_OUT0[26]
                            (rising edge-triggered cell BITSLICE_CONTROL clocked by TX_BIT_CTRL_OUT[26]  {rise@0.000ns fall@2.101ns period=4.202ns})
  Destination:            u_SN66_virtexuQDRIIPLUS_vlog_475MHz_vivado/inst/u_qdriip_phy/phycal/cal/caladdrdecode/riu2clb_rd_data_riu_r_reg[19]/D
                            (rising edge-triggered cell FDRE clocked by riu_clk  {rise@0.000ns fall@4.202ns period=8.404ns})
  Path Group:             riu_clk
  Path Type:              Setup (Max at Slow Process Corner)

Solution

If this exact path fails timing please open a Service Request with Xilinx Technical Support.

Revision History:

06/04/2014 - Initial Release

Linked Answer Records

Master Answer Records

Answer Number Answer Title Version Found Version Resolved
69037 UltraScale/UltraScale+ RLDRAM3 - Release Notes and Known Issues N/A N/A
69038 QDRII+ UltraScale and UltraScale+ IP Release Notes and Known Issues N/A N/A
AR# 60951
Date 12/15/2017
Status Active
Type Known Issues
Devices
  • Kintex UltraScale
  • Virtex UltraScale
Tools
  • Vivado Design Suite
  • Vivado Design Suite - 2014.2
IP
  • QDRII+ SRAM
  • RLDRAM3
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