TSC2102

SLAS379A− APRIL 2003 − REVISED JUNE 2004

PROGRAMMABLE TOUCH SCREEN CONTROLLER WITH

INTEGRATED STEREO AUDIO DAC AND HEADPHONE AMPLIFIER

FEATURES

Fully Automated Modes of Operation

and Averaging

Processing

Processors

APPLICATIONS

DESCRIPTION

The TSC2102 is a highly integrated combination resistive

touch screen controller with on-chip processor and audio

DAC. The touch screen portion of the TSC2102 contains

a 12-bit 4-wire resistive touch screen converter complete

with drivers, and interfaces to the host controller through

a standard SPI

 serial interface. The on-chip processor

provides extensive features specifically designed to

reduce host processor and bus overhead, with capabilities

that

include

fully

automated

operating

modes,

programmable conversion resolution up to 12 bits,

programmable

sampling

rates

up

to

125

kHz,

programmable conversion averaging, and programmable

on-chip timing generation.

The TSC2102 also features a high-performance audio

DAC with 16, 20, 24, or 32-bit stereo playback functionality

at up to 48 ksps. The stereo output drivers on the TSC2102

can be programmed for headphone drive or line-level

drive, and support capless as well as ac-coupled output

configurations.

The

digital

audio

data

format

is

programmable to work with popular audio standard

protocols (I2S, DSP, left/right justified) in master or slave

mode, and also includes an on-chip PLL for flexible clock

generation capability.

The TSC2102 offers two battery measurement inputs

capable of reading battery voltages up to 6 V, while

operating at only 2.7 V. It also has an on-chip temperature

sensor capable of reading 0.3

°C resolution. The TSC2102

is available in a 32-lead TSSOP.

US Patent No. 624639

SPI is a trademark of Motorola.

OMAP is a trademark of Texas Instruments.

Xscale is a trademark of Intel.

PRODUCTION DATA information is current as of publication date. Products

conform to specifications per the terms of Texas Instruments standard warranty.

Production processing does not necessarily include testing of all parameters.

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments

semiconductor products and disclaimers thereto appears at the end of this data sheet.

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Copyright

 2003−2004, Texas Instruments Incorporated