ID:115010 To ensure correct operation of the GXB receivers, transmitters and transmitter PLLs on the device, a user reset sequence is required (RELEASE_CLEARS_BEFORE_TRI_STATES option is set to ON)

CAUSE: The project has the RELEASE_CLEARS_BEFORE_TRI_STATES option set to ON. When this is the case, the power-on reset circuitry of the GXB receivers, transmitters and transmitter PLLs will not ensure that they start-up in a good state. Therefore, a user-reset sequence using one or more of the following types of signals is required: pll_areset, txdigitalreset, rxanalogreset, rxdigitalreset.

ACTION: A user-reset sequence is required to bring the GXB receiver, transmitter and transmitter PLLs in the design to a good state. If a user-reset sequence is not wanted, specify the RELEASE_CLEARS_BEFORE_TRI_STATES option to be OFF.