Category: Transceiver
Tools: Quartus® Prime / Quartus II
Device: Stratix® V


Specified in the QSF assignment.
Name the assignment XCVR TX PLL Reconfiguration Group Setting and set the same group number for all the TX PLLs you want to merge.

Below is an example of setting two of the four TX PLLs to group number 0 and the other two to group number 1 and merging them.

set_instance_assignment -name XCVR_TX_PLL_RECONFIG_GROUP 0 -to s5gxsdi_tr_tx:u0_s5gxsdi_tr_tx|...|pll0.pll.atx_pll.tx_pll
set_instance_assignment -name XCVR_TX_PLL_RECONFIG_GROUP 0 -to s5gxsdi_tr_tx:u1_s5gxsdi_tr_tx|...|pll0.pll.atx_pll.tx_pll
set_instance_assignment -name XCVR_TX_PLL_RECONFIG_GROUP 1 -to s5gxsdi_tr_tx:u0_s5gxsdi_tr_tx|...|pll1.pll.atx_pll.tx_pll
set_instance_assignment -name XCVR_TX_PLL_RECONFIG_GROUP 1 -to s5gxsdi_tr_tx:u1_s5gxsdi_tr_tx|...|pll1.pll.atx_pll.tx_pll

(The ... in the middle is omitted. Please refer to the file below for an example that describes everything.)

See also the knowledge base below.
https://www.altera.co.jp/support/support-resources/knowledge-base/solutions/rd11272012_887.html

ELS7128_example__1.txt

Full text