TSC2301IZQZ

          TSC2301 SLAS371D – SEPTEMBER 2002 – REVISED AUGUST 2004 PROGRAMMABLE TOUCH SCREEN CONTROLLER WITH STEREO AUDIO CODEC FEATURES APPLICATIONS • • • • • • • • • • • • • • • • SPI™ 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-Ω 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 Junior™ BGA Package 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 system 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. Copyright © 2002–2004, Texas Instruments Incorporated TSC2301 www.ti.com SLAS371D – SEPTEMBER 2002 – REVISED AUGUST 2004 MICBIAS AFILTR AFILTL I2SDIN AVDD - 1V AVDD 30k Ω I2S INTERFACE VCM I2SDOUT LRCLK 20k Ω BCLK AGND Mute, 0db, 6dB, 12dB MICIN +20 to - 40dB, 0.5dB Steps 317Ω Σ∆ ADC RLINEIN +12dB to 35dB 0.5dB steps
+20 to - 40dB, 0.5dB Steps 317Ω Σ∆ ADC LLINEIN Digital Audio Processing And PLL MCLK DVDD (2) MONO+ MONO- DGND (2) VREF+ VREFRESET HPVDD HPGND POL Headphone Driver
VOUTL Headphone Driver VBAT2 Control CONTROL Interface LOGIC & SPI INTERFACE SPIDIN SPIDO DAV PENIRQ DAC KBIRQ Touch Pannel Drivers Internal 2.5V/ 1.25V Reference Temp Sensor VBAT1 Digital Gain 0 to - 63.5dB 0.5dB Steps Σ∆ DAC
HPL DACOUT VREFIN X+ XY+ Y- SPICLK SPISEL VOUTR DACSET Σ∆ DAC
HPR Digital Gain 0 to - 63.5dB 0.5dB Steps SAR ADC Battery Monitor GPIO_0 GPIO_1 Battery Monitor AUX1 AUX2 GPIO INTERFACE Keypad Scanner and State Control GPIO_2 GPIO_3 GPIO_4 COI COO OSC GPIO_5/CLKO C1 C2 2 C3 C4 R1 R2 R3 R4 TSC2301 www.ti.com SLAS371D – SEPTEMBER 2002 – REVISED AUGUST 2004 PACKAGE/ORDERING INFORMATION PRODUCT PACKAGE PACKAGE DESIGNATOR TQFP-64 PAG TSC2301I OPERATING TEMPERATURE RANGE GQZ –40°C to 85°C VFBGA-120 ZQZ ORDERING NUMBER TRANSPORT MEDIA QUANTITY TSC2301IPAG Trays, 160 TSC2301IPAGR Tape and reel, 1500 TSC2301IGQZ Trays, 250 TSC2301IGQZR Tape and reel, 2500 TSC2301IZQZ Trays, 250 TSC2301IZQZR Tape and reel, 2500 ABSOLUTE MAXIMUM RATINGS over operating free-air temperature range unless otherwise noted (1) TSC2301 Supply voltage AVDD, HPVDD, DVDD Ground voltage differences AGND, DGND 4V ±0.1 V Digital input voltage -0.3 V to (DVDD + 0.3 V) Analog input voltage -0.3 V to (AVDD + 0.3 V) Ambient temperature under bias, TA -40°C to 125°C Storage temperature, Tstg -55°C to 150°C Junction temperature, TJ 150°C Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds 260°C (1) Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. 3 TSC2301 www.ti.com SLAS371D – SEPTEMBER 2002 – REVISED AUGUST 2004 ELECTRICAL CHARACTERISTICS At 25°C, HPVDD = AVDD = DVDD = +3.3 V, VREF = External 2.5 V, unless otherwise noted. Parameter Conditions TSC2301 Min Typ Units Max Auxilary Analog Inputs Input voltage range 0 Input capacitance Input leakage current +VREFIN V 25 ρF 1 µA Battery Monitor Input Input voltage range 0 6.0 V Input capacitance 25 ρF Input leakage current ±1 µA Temperature Measurement Temperature range -40 +85 °C Temperature resolution 0.3 °C Accuracy ±2 °C Touch Screen A/D Converter Resolution Programmable: 8-, 10-,12-Bits 12 Bits No missing codes Integral linearity 12-bit resolution ±6 LSB Offset error ±6 LSB Gain error 10 Bits TSC2301IPAG ±6 TSC2301IGQZ ±10 Noise LSB µV RMS