The GX5290/GX5290e board has a 16-bit register that can be set by software to simulate the external event lines.
The GX5290/GX5290e Board has additional programmable clocks that may be used externally. Clocks B and C can be programmed from 300 KHz to 100 MHz (GX5292) or to 200 MHz (Gx5293).
CLKB and CLKC are independent from other clock sources. They are not defined at power up and once programmed, it will not change (even by reset) until programmed to another value. Clock B supports TTL logic families and Clock C supports LVDS logic families.