Imx6ul CPU
From embeddedTS Manuals
This board uses the i.MX6ul 528MHz or 696MHz CPU which is very similar to the i.MX6 Solo used on the TS-4900 using many of the same CPU peripherals IP cores, but using a Cortex-A7 instead to target lower power consumption.
Refer to NXP's documentation for more detailed information on the CPU core: