Some consumer-focused routers have for some time claimed to use Stateful Packet Inspection (SPI) in their firewalls. But the recent generation of boxes based on the ADMtek 5106 Home Gateway ...

Using the SPI module as described here allows taking maximum advantage of the capabilities of low-end microcontrollers in applications that require sampling and interfacing with high-speed digital ...

However, this ties up precious microcontroller cycles while it waits around to flip a bit. A less processor intensive method is to use one of the built-in Serial Peripheral Interface (SPI) modules.

Take a leap the next time you use SPI and don’t poll for the busy flag. “What, are you crazy? That’s the whole point of the busy flag! It’s a quick check to make sure you do… ...

Among IC industry, how to tell among FWH, LPC and SPI? i.e. FirmWare Hub, Low Pin Count and Serial Peripheral Interface Can we tell them from the IC's appearance or they are just interfaces?