HD6852

HD6852, HD68A52 SSDA (Synchronous Serial Data Adapter) The HD6852 Synchronous Serial Data Adapter provides a bi·directional serial interface for synchronous data information interchange. It contains interface logic for simultaneously transmitting and receiving standard synchronous communica· tions characters in bus organized systems such as the HMCS6800 Microprocessor systems. The bus interface of the HD6852 includes select, enable, read/write, interrupt, and bus interface logic to allow data transfer over an 8-bit bi·directional data bus. The parallel data of the bus system is serially transmitted and received by the synchronous data interface with synchronization, fill charar-ter insertion/deletion, and error checking. The functional con· fJgllration of the SSDA is programmed via the data bus during system initialization. Programmable control registers provide control for variable word length, transmit control, receive control, synchronization control and interrupt cO!1troL Sta...