9.7. IEEE Std. 1149.6 Boundary-Scan Register
The BSCs for HSSI transmitters ( GXB_TX[p,n] ) and receivers/input clock buffers (GXB_RX[p,n]) /(REFCLK[p,n]) in Intel® Cyclone® 10 GX devices are different from the BSCs for the I/O pins.
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