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Texas Instruments Presentation Link Adapter 

Date of introduction:  2004 Display technology:   
New price:  $39.95 (SRP 2008) Display size:    
Size:  3.1" x 1.9" x 0.65"
 80 x 48 x 16 mm3
    
Weight:  1.5 ounces, 42 grams Serial No:  2161005296
Batteries:  n.a. Date of manufacture:  mth 06 year 2007 (B)
AC-Adapter:   Origin of manufacture:  China (S)
Precision:   Integrated circuits:  TUSB3210PM, 24LC08
Memories:      
Program steps:   Courtesy of:  Joerg Woerner

The Presentation Link Adapter connects either the ViewScreen panel or the TI-Presenter to student calculator featuring the USB port. In 2007 two different Presentation Link Adapters were available:

TI-84 Plus family: Connects to the TI-84 Plus and TI-84 Plus Silver Edition with Cable 1
TI-89 Titanium Adapter: Connects to the TI-89 Titanium with Cable 2

TI-84Plus_PLink_PCB.jpg (118710 Byte)TI-84Plus_PLink_Back.jpg (81314 Byte)Dismantling the TI-84 Plus Presentation Adapter reveals a smart design based on a Texas Instruments TUSB3210 "Universal Serial Bus General-Purpose Device Controller." This compact device, housed in a 64-pin LQFP package, is fully compliant with the USB 2.0 specification and integrates a 8052 microcontroller, 256 Bytes RAM for internal data, 8k Bytes RAM code space for the user program, 512 Bytes Shared RAM for the USB data and even four 8052 GPIO ports into a single chip.

TI-84Plus_PLink_IC.jpg (90498 Byte)The program code is downloaded during power-up from a serial EEPROM, we located in this product a tiny Microchip 24LC08 device with just 1k Byte capacity. We assume that some of the GPIO lines (General Purpose Input / Output) are used for the ViewScreen interface.

 

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If you have additions to the above article please email: joerg@datamath.org.

Joerg Woerner, March 2, 2009. No reprints without written permission.