XEM7360
Clock Oscillators
Note: The clocks described here are separate and not synchronous to the clock provided by the USB host interface.
General (Fabric) Reference
A fixed-frequency, 200 MHz, low-jitter oscillator is included on-board and outputs LVDS to the FPGA on bank 34. The Kintex-7 FPGA can produce a wide range of clock frequencies using the on-chip DCM and PLL capabilities. An external termination resistor is provided for this clock so internal termination is not necessary.
| 200 MHZ PIN | FPGA PIN |
|---|---|
| IO_L13P_T2_MRCC_33 | AB11 |
| IO_L13N_T2_MRCC_33 | AC11 |
Transceiver Reference
A second 100 MHz oscillator is available to the transceiver portions of the FPGA as a reference.
| 100 MHZ PIN | FPGA PIN |
|---|---|
| MGTREFCLK1P_115 | K6 |
| MGTREFCLK1N_115 | K5 |