Theory
Speech communication, Speech data is stored through pitch-excited linear predictive coding (PE-LPC), where words are created by a lattice filter, selectably fed by either an excitation Read-only memory, ROM (containing a glottal pulse waveform) or an LFSR (linear feedback shift register) noise generator. Linear predictive coding achieves a vast reduction in data volume needed to recreate intelligible speech data.History
The TMC0280/TMS5100 was the first self-contained linear predictive coding, LPC speech synthesizer integrated circuit, IC ever made. It was designed for Texas Instruments by Larry Brantingham, Paul S. Breedlove, Richard H. Wiggins, and Gene A. Frantz and its silicon was laid out by Larry Brantingham. The chip was designed for the 'Spelling Bee' project at Texas Instruments, TI, which later became the Speak & Spell (toy), Speak & Spell. A speech-less 'Spelling B' was released at the same time as the Speak & Spell (toy), Speak & Spell. All TI LPC speech chips until the TSP50cxx series used PMOS architecture, and LPC-10 encoding in a special TI-specific format. Chips in the TI LPC speech series were labeled as TMCxxxx or CDxxxx when used by TI's consumer product division, or labeled as TMS5xxx (later TSP5xxx) when sold to 3rd parties.TI LPC Speech chip family
1978
*TMS5100 (TMC0281, internal TI name is '0280' hence chip is sometimes labeled TMC0280): First LPC speech chip. Used a custom 4-bit serial interface using TMS6100 or TMS6125 mask ROM ICs; used on all non-super versions of the Speak & Spell (toy), Speak & Spell except for the 1980 UK version, which used the TMC0280/CD2801 below. Publicly sold as TMS5100. It was also used on the ''Byron Petite Electronic Talking Typewriter'' toy. Superseded in 1979 by TMS5100A and TMS5110.1980
*TMC0280 AKA CD2801: Used in the Speak & Math, Speak & Read, and the TI Language Translator/Language Tutor. Pin, but not function compatible with TMS5100/TMC0280, has a different LPC and slightly different Chirp table. The CD2801/Die revision F fixes an interpolator bug. *TMS5100A: Die shrink of TMS5100/TMC0281. Very minor differences in function, uses die rev F, fixing a bug in the interpolator. Used on the ''Century Video System'' arcade platform. Uses the original chirp table. *TMS5110: Has updated LPC tables (which mostly match 5220, see below). Pin, but not function compatible with TMS5100. Superseded by TMS5110A. It was used in the Monkgomery puppet toy made by Hasbro. An SDIP version of this chip was sold at some point as the "TMS5111". Uses the 'final' chirp table. *TMS5200 (AKA CD2501E, internal TI name is '0285' hence chip is sometimes labeled TMC0285): Added 8-bit parallel FIFO interface; designed for use by the TI consumer division for the TI-99/4A speech module; also used on the 4th generation Midway Games, Bally/Midway pinball tables' Squawk and Talk speech board (part number AS-2518-61), on the Environmental cabinet version of the Midway Games, Bally/Midway arcade game ''Discs of Tron, Discs of TRON'', on (earlier) Apple II Echo II (expansion card), Echo II cards, and on the Zaccaria (company), Zaccaria arcade games ''Jack Rabbit'' and ''Money Money'', and Zaccaria pinball machines ''Pinball Champ'' and ''Soccer Kings''. Superseded by TMS5220 in late 1980/1981, and possibly sold as cheap, 'fire-sale' stock in 1982–1983. Uses the 'final' chirp table. *CD2802: A version of the TMS5100/5110 with different LPC and Chirp tables, not the same as either the TMS5100(A) or TMS5110(A). Used on the Touch and Tell only, never sold outside of the company. Uses its own, unique, chirp table. *TMS5110A (after 1985: TSP5110A): Die shrink of TMS5110, pin and function compatible. Used on at least two home computer products. It was used on the arcade game ''Bagman (video game), Bagman'' by Valadon Automation, by Omnicron Electronics on the TCC-14 Talking Clock/Calendar, and on the arcade game ''A.D. 2083'' by Midcoin. Used on the Chrysler Electronic Voice Alert vehicle monitoring system. Uses the 'final' chirp table. *TMS5220 (AKA CD2805E?): Improved version of the TMS5200, pin but not function compatible (has new LPC tables); used on (later) Apple II Echo II (expansion card), Echo II cards, (rumor) on the very last run of TI-99/4A speech modules, on the BBC Micro, in Midway Games, Bally/Midway's ''NFL Football'' arcade game, and in many Atari, Inc. arcade games, including ''Star Wars (1983 video game), Star Wars'', ''Firefox (video game), Firefox'', ''Star Wars: Return of the Jedi (video game), Return of the Jedi'', ''Road Runner (video game), Road Runner'', ''Star Wars: The Empire Strikes Back (1985 video game), The Empire Strikes Back''. Later Atari arcade games used the TMS5220C, see below. The TMS5220 was also used in Zaccaria (company), Zaccaria pinball machines ''Farfalla'', ''Devil Riders'', ''Time Machine'', ''Magic Castle'', ''Robot'', ''Clown'', ''Pool Champion'', ''Blackbelt'', ''Mexico '86'', ''Zankor'', and ''Spooky''. The TMS5220 was also used on Venture Line's ''Looping'' and ''Sky Bumper'', Olympia (video game company), Olympia's ''Portraits'', and Exidy's ''Victory'' and ''Victor Banana'' arcade machines.MAWS - searchable information about resources in MAME .122u81983
*TMS5220C (after 1985: TSP5220C): has the two NOP commands the parallel FIFO interface reworked to control speech rate, added external full reset; minor change apparent to the way energy values affect unvoiced frames. Otherwise identical, pin-compatible, and a drop-in replacement to the TMS5220. Used on the Atari arcade games ''Indiana Jones and the Temple of Doom (1985 video game), Indiana Jones and the Temple of Doom'', ''720°'', ''Gauntlet (1985 video game), Gauntlet'', ''Gauntlet II'', ''APB (1987 video game), A.P.B.'', ''Paperboy (video game), Paperboy'', ''RoadBlasters'', ''Vindicators Part II'', and finally ''Escape from the Planet of the Robot Monsters''. Also used on the IBM PS/2 Speech Adapter and the Pacific Educational Systems RS-232 Speech adapter. Manufactured into the early 1990s.1985
*TSP50C50: CMOS, uses LPC-12 instead of LPC-10, uses TMS60C20 256Kb/32KiB serial ROM instead of TMS6100. Uses 'D6' LPC tables and chirp tables, which were common for the whole TSP50Cxx series. Has built in low-pass analog filter. Manufactured into the early 1990s.1986
*TSP50C40 (later MSP50C40): TSP50C50 plus a simple 8-bit microcontroller with on-chip mask ROM. Was used in a number of TI's consumer division products. was named CM54129/CM54169 for the speak&music.1987 and later
*Several other TSP50Cxx products, which added more ROM/ram, did away with the serial interface entirely, etc. *The TSP53C30 microcontroller product emulates a TMS5220 PE-LPC, but also has support for D6 LPC as well as PCM sound output. *After about 1997, the TSP non-microcontroller line was phased out in favor of speech-specific members of the MSP line, which have microcontrollers. In October 2001, the rights to the speech-specific subset of the MSP line of chips (MSP50C6XX chip family) was sold by TI to Sensory, Inc. Sensory rebranded the chips as the Sensory SC-6x line.EE Times.References
;Notes * ftp://anonymous@ftp.whtech.com/datasheets%20and%20manuals/Datasheets%20-%20TI/TMS5220.PDF - TMS5220 datasheet