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These devices consist of bus transceiver circuits, D-type flip-flops, and control circuitry arranged for mulTIplexed transmission of data directly from the data bus or from the internal storage registers.
Output-enable (OEAB and ) inputs are provided to control the transceiver funcTIons. Select-control (SAB and SBA) inputs are provided to select whether real-TIme or stored data is transferred. The circuitry used for select control eliminates the typical decoding glitch that occurs in a mulTIplexer during the transition between stored and real-time data. A low input selects real-time data, and a high input selects stored data. Figure 1 illustrates the four fundamental bus-management functions that can be performed with the ´ABT652.
