Critical Issue
If you attempt to drive a PLL input with a low-speed clock
(the tx_clkout
port of ALTGX) for non-transceiver applications,
the Quartus II software incorrectly prevents the connection and
issues a message similar to the following:
Error: Port <port name> of <atom type> Atom <atom
name> cannot be connected to <atom type> Atom <atom name>
.
To drive a PLL input with a low-speed clock (the tx_clkout
port
of ALTGX) for non-transceiver applications, refer to the solution
available at:http://www.altera.com/support/kdb/solutions/rd12132010_299.html