Clock Oscillator

A fixed-frequency, 200 MHz, low-jitter oscillator is included on-board and outputs LVDS to the FPGA on bank 34. The Spartan-7 FPGA can produce a wide range of clock frequencies using the on-chip DCM and PLL capabilities.

Internal LVDS input termination must be disabled on these pins to function properly (DIFF_TERM=FALSE). External termination is provided on the board. This is necessary when using the LVDS clock input on bank 34 as this bank is fixed at VCCO_MC2. Please see Xilinx’s UG471 for more details.