Direct Access To Transmit Data And Receive Data On Telecommunication Adapter
Original Publication Date: 1982-Feb-01
Included in the Prior Art Database: 2005-Feb-08
A telecommunication adapter uses standard integrated circuit modules on a common card, and these integrated circuit modules provide the adapter with a number of automatic functions. Integrated circuit 1 is a programmable communication interface commonly referred to as a universal synchronous/asynchronous receive/transmit (USART) circuit. Integrated circuit 2 is a programmable HDLC/SDLC protocol controller providing high level or synchronous data link control. Integrated circuit 1 includes a framing checking logic and a parity checking logic, and integrated circuit 2 includes 0 bit insertion and deletion logic and cyclic redundancy checking (CRC) logic.