We have detected your current browser version is not the latest one. Xilinx.com uses the latest web technologies to bring you the best online experience possible. Please upgrade to a Xilinx.com supported browser:Chrome, Firefox, Internet Explorer 11, Safari. Thank you!

AR# 55360

Ethernet 1000BASE-X PCS/PMA or SGMI v12.0, v11.5 and v11.4 - mmcm_locked not connected to GT tx_startup_fsm and rx_startup_fsm


If using the Ethernet 1000BASE-X PCS/PMA or SGMII core v12.0, v11.5 and v11.4, mmcm_locked is not connected to GT tx_startup_fsm and rx_startup_fsm. This could cause the GT reset logic to complete before the MMCM has locked and result in the link not coming up at power up or after a reset.


To resolve this issue, in the core_name_gtwizard_init.v[hd] file, map the signal GT0_TXUSERRDY_IN to the MMCM_LOCK input pin of gt0_txresetfsm_i and gt0_rxresetfsm_i. These inputs are currently tied to logic Vcc.

This is scheduled to be fixed in v13.0 of the core scheduled to be released in the 2013.2 design tools.



AR# 55360
日期 06/05/2013
状态 Active
Type 综合文章
  • Ethernet 1000BASE-X PCS/PMA or SGMII