USB Signaling Speed FX2LP operates at two of the three rates defined in the USB Specification Revision 2.0, dated April 27, 2000:

■ Full speed, with a signaling bit rate of 12 Mbps

■ High speed, with a signaling bit rate of 480 Mbps FX2LP does not support the low speed signaling mode of 1.5 Mbps.

8051 Microprocessor The 8051 microprocessor embedded in the FX2LP family has 256 bytes of register RAM, an expanded interrupt system, three timer/counters, and two USARTs.

To get more ideas, you can check this article:CY7C68013A USB Microcontroller:Datasheet,Features and Block Diagram