ID:186187 GXB receiver channel "<name>" cannot have serial loopback enabled while the associated GXB transmitter channel "<name>" has reverse-serial loopback enabled
CAUSE: The SLPBK
port of the specified gigabit transceiver block (GXB) receiver channel and the SRLPBK
port of the specified GXB transmitter channel are tied to VCC
, thus enabling both serial and reverse-serial loopback at the same time. This connection of the two ports at the same time to VCC
is illegal.
ACTION: Modify the design to feed the SLPBK
port of the GXB receiver channel and the SRLPBK
port of the GXB transmitter channel from pins or logic. If you use the
MegaWizard Plug-In Manager
to instantiate the ALTGXB megafunction, the port names are rx_slpbk
and tx_srlpbk
; however, because the ALTGXB MegaWizard Plug-In Manager is being deprecated, Intel recommends using ALTGX MegaWizard Plug-In Manager instead.