What can I do if the ALTGX_RECONFIG IP reconfig_busy signal is stuck high on Arria II, Cyclone IV, or Stratix IV transceiver devices?

If the transceiver ALTGX_RECONFIG IP reconfig_busy signal is stuck high on Arria® II, Cyclone® IV, or Stratix® IV transceiver devices, you can enable and assert the ALTGX_RECONFIG IP reconfig_reset signal.

You can enable the reconfig_reset signal on the ALTGX_RECONFIG IP using the instructions below.

1. Open the ALTGX_RECONFIG IP.
2. Enable \'Channel reconfiguration\'.
3. Enable "Use \'reconfig_reset\'" in the \'Channel and TX PLL reconfiguration\' page.
4. Press \'Finish\' to generate the IP.
5. Connect a synchronous reset signal to the reconfig_reset port.

The following rules apply to the reconfig_reset signal:

• The reconfig_reset signal must be synchronous to the reconfig_clk clock.
• The reconfig_reset signal must be high when the device enters user mode.
• The reconfig_reset signal must be asserted for at least one reconfig_clk clock cycle.