IDT49C818

FEATURES: High-speed non-inverting 8-bit parallel register for any data path, control path or pipelining application Pin-out similar to the Am29818 and 54/745818, but uses an improved protocol for the serial interface to New, unique command capability which allows for multiplicity of diagnostic functions High-speed Serial Protocol Channel (SPC) which provides access to octal data register using four pins Controllability -Serial scan of new machine state -Form temporary connections between D and Y buses -Load new machine state "on the fly" synchronous with PCLK - Temporarily force Y output bus - Temporarily force data out the D input bus (as in loading Writeable Control Store - WCS) 0 bservabil ity -Directly observe D and Y buses -Serial scan out current machine state -Capture machine state "on the fly" synchronous with PCLK -WCS pipeline register -Load WCS from serial input - Read WCS via serial scan Ideal for diagnostic scan testing FUNCTIONAL BLOCK DIAGRAM DE...