TSC2301| Datasheet

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Burr Brown Products from Texas Instruments

TSC2301
SLAS371D SEPTEMBER 2002 REVISED AUGUST 2004

PROGRAMMABLE TOUCH SCREEN CONTROLLER WITH STEREO AUDIO CODEC
FEATURES
SPITM Serial Interface Touch Screen Controller 4-Wire Touch Screen Interface Internal Detection of Screen Touch and Keypad Press Touch Pressure Measurement Ratiometric Conversion Programmable 8-, 10- or 12-Bit Resolution Programmable Sampling Rates Up to 125 kHz Direct Battery Measurement (0 to 6 V) On-Chip Temperature Measurement 4-by-4 Keypad Interface With Programmable De-Bounce and Key Masking Integrated Touch Screen Processor Reduces Host CPU Interrupts and Overhead Internal Timing Control With Programmable Delays and Averaging Stereo Audio Codec 20-Bit Delta-Sigma ADC/DAC Dynamic Range: 98 dB Sampling Rate Up to 48 kHz I2S Serial Interface Stereo 16- Headphone Driver Full Power-Down Control 8-Bit Current Output DAC On-Chip Crystal Oscillator Programmable Bass/ Midrange/ Treble EQ Effects Processing 6 GPIO Pins Single 2.7-V to 3.6-V Supply 64-Pin TQFP Package 120-Ball MicroStar JuniorTM BGA Package

APPLICATIONS
Personal Digital Assistants Cellular Phones MP3 Players Internet Appliances Smartphones

DESCRIPTION
The TSC2301 is a highly integrated PDA analog interface circuit. It contains a complete 12-bit A/D resistive touch screen converter (ADC) including drivers, touch pressure measurement capability, keypad controller, and 8-bit D/A converter (DAC) output for LCD contrast control. The TSC2301 offers programmable resolution of 8, 10, and 12 bits and sampling rates up to 125 kHz to accommodate different screen sizes. The TSC2301 interfaces to the host controller through a standard SPI serial interface. The TSC2301 features a high-performance 20-bit, 48-ksps stereo audio codec with highly integrated analog functionality. The audio portion of the TSC2301 contains microphone input with built-in pre-amp and microphone bias circuit, an auxiliary stereo analog input, a stereo line-level output, a differential mono line-level output, and a stereo headphone amplifier output. The digital audio data is transferred through a standard I2S interface. A fully programmable PLL for generating audio clocks from a wide variety of s
ystem clocks is also included. The TSC2301 also offers two battery measurement inputs capable of battery voltages up to 6 V, while operating at a supply voltage of only 2.7 V. It also has an on-chip temperature sensor capable of reading 0.3 C resolution. The TSC2301 is available in 64-lead TQFP, and 120-ball VFBGA packages. US Patent No. 6246394

FUNCTIONAL BLOCK DIAGRAM

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. MicroStar Junior is a trademark of Texas Instruments. SPI is a trademark of Motorola.
PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters.