Texas Instruments My Own PlayPhone

Date of introduction:  1993 Display technology:  
New price:  $34.00 (1993) Display size:  n.a.
Size:  13.4" x 13.4" x 3.7"    
Weight:  2 pounds 11 ounces Serial No:  
Batteries:  4*AA cells Date of manufacture:  year 1993
AC-Adapter:   Origin of manufacture:  Singapoore
Precision:   Integrated circuits:  TSP50C11 (CSM11157)
Program steps:   Courtesy of:  Joerg Woerner
    Download manual:   (US: 1.6M Bytes)

Playphone_1.jpg (41792 Byte)This rare and unknown My Own PlayPhone was introduced in 1993 and seems to be together with the Discovery Depot the last speaking toys with the Texas Instruments brand.

Dismantling the toy reveals with the TSP50C11
speech synthesizers the most cost effective solution for these applications. The TSP50C0x/1x uses a revolutionary architecture to combine an 8-bit microprocessor, a speech synthesizer, ROM, RAM, and I/O in a low-cost single-chip system. The architecture uses the same ALU (Arithmetic Logic Unit) for the synthesizer and the microprocessor, thus reducing chip area and cost and enabling the microprocessor to do a multiply operation in 1.6us. Linear Predictive Coding (LPC) is used to synthesize high-quality speech at a low data rate.
The TSP50C0x/1x implements an LPC-12 speech synthesis algorithm using a 12-pole lattice filter. The internal microprocessor fetches speech data from the internal or external ROM (TSP60C18 or TSP60C81), decodes the speech data, and sends the decoded data to the synthesizer. The microprocessor also interpolates (smooths) the speech data between fetches. The output of the synthesizer can be used to drive transistor or integrated-circuit amplifiers. Some digital low-pass filtering is provided inside the TSP50C0x/1x. 
The TSP50C0x/1x  is manufactured in a 4-V to 6-V CMOS Technology for Low Power Dissipation and using 16 pin dual-inline (DIP) or 20-pin surface mountable (SO) plastic cases.

We noticed these integrated circuits already in some other speaking toys developed by Texas Instruments:

Type  Date Product
TSP50C11/CSM11012 1990 Peek-A-Boo Zoo
TSP50C11/CSM11039 1991 Passport Game
TSP50C11/CSM11124 1991 Magic Clown
TSP50C11/CSM11125 1992 Storytime Sorter
TSP50C11/CSM11128 1992 Mouse Computer
TSP50C11/CSM11129 1992 L'Ordinateur Magique
TSP50C11/CSM11157 1993 My Own PlayPhone
TSP50C11/CSM11159 1993 Magic Melody
TSP50C11/CSM11163 1993 Teddy Touch & Tell

Other toys for toddlers are the Listen & Learn and the Magic Sorter.

of the characters 1993 Warner Bros.

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If you have additions to the above article please email:

Joerg Woerner and Melissa MerrymanJuly 8, 2001. No reprints without written permission.