National Semiconductor Booklet © 1980 (Catlett, VA)

National Semiconductor Booklet © 1980

Local pick-up preferred (please call first) but will ship at the buyer s expenseKingston Books 15 IMG_8074MM54104 DIGITALKER Speech Synthesis systemIllustrated Typical Applications Features Applications Absolute Maximum Ratings AC & DC Electrical Characteristics Timing Waveforms Crystal Circuit Information Block and Connection Diagrams Dual-In-Line package pin out External Clock Input (4.0 Mhz) Functional Description Input Signals Output Signals Input Output Signals Application Information Filter Circuit to Produce Maximum Frequency Response Minimum Filter Circuit DIGITALKER System Utilizing Microbus Interface Low Power Configuration using Static ROM DIGITALKER System Using COP420 Interface Speech ROM Expansion for Requirements Greater Than 128k Bits Physical Dimensions (inches & millimeters)General DescriptionThe DIGITALKER is a speech synthesis system consisting of multiple N-channel MOS integrated circuits. It contains an MM54104 speech processor chip (SPC) and speech ROM and when used with external filter amplifier and speaker produces a system which generates high quality speech including the natural inflection and emphasis of the original speech. Male female and children s voices can be synthesized.The SPC communicates with the speech ROM which contains the compressed speech data as well as the frequency and amplitude data required for speech output. Up to 128k bits of speech can be directly accessed. This can be expanded with minimal external logic.With the addition of an external resistor on-chip debounce is provided for use with a switch interface.An interrupt is generated at the end of each speech sequence so that several sequences so that several sequences or words can be cascaded to form different speech expressions.Encoding (digitizing) of custom words or phrase lists must be done by National Semiconductor. Customers submit to the factory high quality recorded magnetic reel-to-reel tapes containing words or phrases to be encoded. National Semiconductor will sell kits consisting of the SPC and ROM(s) containing the digitized word or phrases.