The device shown in Figure 17-1 is an RS-232–to–TTL converter board, designed to allow a PC with a serial (RS-232) port to communicate with a device that has a console (TTL) port. External converters ...
Editor's Note: To view a PDF version of this article, Click Here. A wave of cable modem chips meeting Revision 1.1 of the Data Over Cable Service Interface Spec (Docsis) enables the type of functional ...