UCB1100

INTEGRATED CIRCUITS UCB1100 Advanced modem/audio analog front-end Preliminary specification Supersedes data of 1996 Apr 09 Version 1.2 1998 May 08 Philips Semiconductors Philips Semiconductors Preliminary specification Advanced modem/audio analog front-end Version 1.2 GENERAL DESCRIPTION The UCB1100 is a single chip, integrated mixed signal audio and telecom codec. The single channel audio codec is designed for direct connection of a microphone and speaker. The built-in telecom codec can directly be connected to a DAA and supports high speed modem protocols. The incorporated 10 bit analogue to digital converter and the touch screen interface provides complete control and readout of a connected 4 wire resistive touch screen. The 10 additional general purpose I/O pins provides programmable inputs and/or outputs to the system. The UCB1100 has a serial interface bus (SIB) intended to communicate to the system controller. Both the codec input and output data and the control register data is multiplexed on this SIB interface. UCB1100 TABLE OF CONTENTS GENERAL DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 APPLICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 KEY FEATURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 TABLE OF CONTENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 1.0 FUNCTIONAL BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . . 3 2.0 ORDERING INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3.0 ABSOLUTE MAXIMUM RATINGS . . . . . . . . . . . . . . . . . . . . . 4 4.0 DC ELECTRICAL CHARACTERISTICS . . . . . . . . . . . . . . . . 5 5.0 PINOUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 5.1 PINLIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 6.0 FUNCTIONAL DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . 8 6.1 AUDIO CODEC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 6.1.1 AUDIO INPUT SPECIFICATIONS . . . . . . . . 10 6.1.2 AUDIO OUTPUT SPECIFICATIONS . . . . . . . 11 6.2 TELECOM CODEC . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 6.2.1 TELECOM INPUT SPECIFICATIONS . . . . . 14 6.2.2 TELECOM OUTPUT SPECIFICATIONS . . . 15 6.3 TOUCH SCREEN MEASUREMENT MODES . . . . 16 6.3.1 POSITION MEASUREMENT . . . . . . . . . . . . . 16 6.3.2 PRESSURE MEASUREMENT . . . . . . . . . . . 16 6.3.3 PLATE RESISTANCE MEASUREMENT . . . 16 6.4 TOUCH SCREEN INTERFACE . . . . . . . . . . . . . . . . . 17 6.4.1 TOUCH SCREEN SPECIFICATIONS . . . . . 18 6.5 10 BIT ADC. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 6.5.1 SPECIFICATION OVERVIEW . . . . . . . . . . . . 21 6.6 ON CHIP REFERENCE CIRCUIT . . . . . . . . . . . . . . 21 6.6.1 SPECIFICATION OVERVIEW . . . . . . . . . . . . 21 6.7 SERIAL INTERFACE BUS . . . . . . . . . . . . . . . . . . . . . 22 6.7.1 SIB DATA FORMAT . . . . . . . . . . . . . . . . . . . . . 23 6.7.2 CODEC DATA TRANSFER . . . . . . . . . . . . . . 24 6.7.3 CONTROL REGISTER DATA TRANSFER . 26 6.7.4 AC ELECTRICAL CHARACTERISTICS . . . 27 6.8 GENERAL PURPOSE I/Os . . . . . . . . . . . . . . . . . . . . 27 6.9 INTERRUPT GENERATION . . . . . . . . . . . . . . . . . . . 27 6.10 RESET CIRCUITRY . . . . . . . . . . . . . . . . . . . . . . . . . . 28 7.0 MISCELLANEOUS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 7.1 POWER ROUTING STRATEGY . . . . . . . . . . . . . . . . 29 8.0 CONTROL REGISTER OVERVIEW . . . . . . . . . . . . . . . . . . 30 9.0 PACKAGE OUTLINES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 9.1 PACKAGE OUTLINE LQFP48 . . . . . . . . . . . . . . . . . . 34 10.0 DEFINITIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 APPLICATIONS • Personal Intelligent Communicators • Personal Digital Assistants (PDA) • Screen phones • Smart Phone and smart Fax • Intelligent Communicators KEY FEATURES • 48-pin LQFP (SOT313-2) small body SMD package and low external component count result in minimal PCB space requirement. • A 12-bit sigma delta audio codec with programmable sample rate, input and output voltage levels, capable of connecting directly to speaker and microphone, including digitally controlled mute, loopback and clip detection functions • A 14-bit sigma delta telecom codec with programmable sample rate, including digitally controlled input voltage level, mute, loopback and clip detection functions. The telecom codec is intended for direct connection to a DAA (digital access arrangement) and includes a built-in sidetone suppression circuit. • A complete 4 wire resistive touch screen interface circuit supporting position, pressure and plate resistance measurements. • A 10-bit successive approximation ADC with internal track and hold circuit and analogue multiplier for touch screen readout and monitoring of four external high voltage (7.5V) analogue voltages. • A high speed, 4 wire serial interface data bus (SIB) for communication to system controller. • A 3.3V supply voltage and built in power saving modes make the UCB1100 optimal for portable and battery powered applications. 1998 May 08 2 1998 May 08 Vssa1 Vdda1 2xVssd 2xVddd audio_input_enable loopback mux 64fs 1 bit ADC 1 encoder 12 digital decimation filter serial bus sibdout fs gain[0,2] 64fsa test Philips Semiconductors micp gain[3,4] micgnd vdda2 64fs 4 bit DAC 4 serial bus controller attn[0,3] mute attn[4,5] audio_output_enable telecom input enable loopback attenuation mux 64fs 1 bit ADC 4 14 digital decimation filter fs effect 64fsa 12 digital volume control digital noise shaper fs vssa1 AUDIO CODEC spkrp spkrn sibsync sibclk 1.0 FUNCTIONAL BLOCK DIAGRAM control data registers vssa2 to all other analog and digital blocks side tone suppression echo on serial bus sibdin decoder fsa 64fsa fst 64fst reset internal reset sample frequency divider stretcher nreset sample frequency divider tinp tinn TELECOM CODEC 64fs 4 bit DAC 4 mute telecom output enable divaud[0:6] touch screen bias voltage voltage reference power control divtel0:6] external reference external filter effect 14 digital noise shaper fs Advanced modem/audio analog front-end Figure 1. Block Diagram of the UCB1100 3 to external register 11 mux 10 bit ADC 9 to 1 track & hold 10 stop logic ADC start adc start sync enable adc_sync_ena adcsync toutp toutn vrefbyp tsmx tspy tsmy vssa3 touch screen Interrupt controller irqout switch matrix eanble data interrupt data for all from other blocks analog blocks clear_interrupt[0:15] rising_edge_ena[0:15] falling_edge_ena[0:15] IOmode[0:9] IOwdat[0:9] IOrdat[0:9] ad0 ad1 ad2 ad3 switched voltage dividers Programmable IO pin block io0 io1 io2 io3 io4 io5 io6 io7 io8 io9 digital pin analog pin Preliminary specification UCB1100 SN00126 supply pin Philips Semiconductors Preliminary specification Advanced modem/audio analog front-end UCB1100 ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Á Á Á ÁÁ Á ÁÁÁÁÁÁÁÁÁÁÁ Á Á Á Á ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁ Á Á ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁ DESCRIPTION ORDERING CODE PACKAGE DRAWING SOT313-2 Plastic low profile quad flat package; 48 leads UCB1100LP/X3 2.0 ORDERING INFORMATION 3.0 ABSOLUTE MAXIMUM RATINGS SYMBOL VDDMAX VIMAX VADMAX VOMAX IIKMAX IOKMAX IOLMAX Tstg Supply voltage PARAMETER MIN –0.5 –0.5 –0.5 –0.5 MAX 5.0 VDD+0.5 8.5 VDD+0.5 10 10 4 UNIT V V V V mA mA mA °C DC input voltage, except AD0–3 inputs DC input voltage AD0–3 inputs DC output voltage DC diode input current, all inputs DC diode output current Continuous output current, digital outputs Storage temperature –55 150 NOTES: 1. Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any conditions other than those described in the Absolute Maximum Rating section of this specification is not implied. 2. This product includes circuitry specially designed for the protection of its internal devices from damaging effects of excessive static charge. Nonetheless, it is suggested that conventional precautions be taken to avoid submitting the UCB1100 to conditions exceeding the maximum ratings. 3. Parameters are valid over the operating ambient temperature unless otherwise specified. All voltages are with respect to the VSSD pin, unless otherwise noted. 1998 May 08 4 Philips Semiconductors Preliminary specification Advanced modem/audio analog front-end UCB1100 4.0 DC ELECTRICAL CHARACTERISTICS Tamb = 0°C to 70°C, VSSD = VSSA1 = VSSA2 = VSSA3 = 0V, sibclk = 10MHz, audio_divisor = 12, telecom_divisor = 40. Voltage with respect to the VSSD pin, unless otherwise specified. LIMITS SYMBOL VDDD VDDA1 VDDA2 VSSA2 VSSA3 IDDD PARAMETER digital supply voltage analogue supply voltage (excl.speaker driver) analogue supply voltage (speaker driver only) analogue ground voltage wrt. VSSD analogue ground voltage wrt VSSD digital supply current, full functionality only audio codec activated only telecom codec activated only touch screen activated only adc activated no functions activated, sibclk stopped analogue supply current, full functionality only audio codec activated only telecom codec activated only touch screen activated only adc activated no analogue functions activated total speaker driver supply current full functionality only audio codec activated only telecom codec activated only touch screen activated only adc activated no analogue functions activated touch screen bias voltage maximum touch screen bias current full scale voltage ad0–ad3 inputs full scale input touch screen inputs input low voltage input high voltage output low voltage output high voltage clock frequency Operating Ambient Temperature IOL=2mA IOH=2mA 0.8*VDDD 0 0 10 15 70 –0.5 0.7*VDDD 10 7.5 7.5 0.3*VDDD VDDD+0.5 0.2*VDDD Note 1 19 17 19 15 15 10 Note 1, Note 2 3.8 1.5 1.7 0.4 0.5