Digitally controlled impedance

Digitally Controlled Impedance is a function for controlling impedance (in FPGAs): ^[1]

• Series resistance to match line impedance.
• Parallel resistance to avoid reflection.

See also

• Transmission line

References

1. ^ "XCITE Digitally Controlled I/O Impedance". http://www.xilinx.com/products/silicon_solutions/fpgas/virtex/virtex_ii_pro_fpgas/capabilities/xcite.htm.  070809 xilinx.com