USB ASIC
Tutorials

1.Embedded USB - a brief tutorial
The Standards
USB 1.1
The original USB standard provides a fast Master/Slave interface using a tiered star topology supporting up to 127 devices with up to 6 tiers (hubs). A PC is normally the master or Host and each of the peripherals linked to it act as slaves [...]

Many ASIC technologies and architectures have been developed in the past 30 years.  The following are the most well-known ASIC types used in the industry: Standard Cell, Structured ASIC, Hybrid ASIC , Gate Array, Embedded Array.
Standard Cell

Standard Cell ASICs, which use a full set of masks for fabrication, are the approach of choice for very high [...]