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AR# 57827

Vivado Design Suite: "ERROR: [Labtools 27-1437] Failed to get a response from the Debug Core Hub on device (JTAG device index = ) in user chain = 1."

Description

When the clock connected to the Debug Hub stops running, the following error message can be observed while trying to connect to the Debug cores:

ERROR: [Labtools 27-1437] Failed to get a response from the Debug Core Hub on device <partname> (JTAG device index = <JTAG device index number>) in user chain = 1.

Vivado automatically picks a clock for the Debug Hub, how can this clock be changed?

Solution

In future releases, an option will be considered to manually change the clock connected to the Debug Hub.

Until then, the temporary work-around is to change the clock connections using the following Tcl commands:

set DEBUG_HUB_CLK_PIN [get_pins dbg_hub/XSDB_CLK_I]
disconnect_net -net [get_nets -of $DEBUG_HUB_CLK_PIN] -objects $DEBUG_HUB_CLK_PIN
connect_net -net [get_nets <continously running clock net name>] -objects $DEBUG_HUB_CLK_PIN
AR# 57827
Date Created 10/07/2013
Last Updated 11/27/2015
Status Active
Type General Article
Tools
  • Vivado Design Suite - 2013.1
  • Vivado Design Suite - 2013.2
  • Vivado Design Suite - 2013.3