ucb1200 NXP Semiconductors, ucb1200 Datasheet
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ucb1200 Summary of contents
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... DATA SHEET UCB1200 Advanced modem/audio analog front-end Product specification File under Integrated Circuits, <Handbook> INTEGRATED CIRCUITS 1998 Jul 22 ...
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... Modems GENERAL DESCRIPTION The UCB1200 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 a speaker. The built-in telecom codec can directly be connected to a DAA and supports high speed modem protocols. The incorporated analog to digital converter and the touch screen interface provides complete control and read-out wire resistive touch screen ...
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... Voltage sample reference filter up sample 10 bit ADC filter Fig.1 Block diagram. 3 Product specification UCB1200 VERSION 7 1.4 mm SOT313-2 SIBDIN Serial bus interface SIBDOUT SIBSYNC IRQOUT Clock buffers & sample rate SIBCLK dividers touch screen interface ...
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... I/O pins IO2 35 general purpose I/O pins IO3 36 general purpose I/O pins V 37 digital ground SSD RESET 38 asynchronous reset input SIBSYNC 39 SIB synchronization input 1998 Jul 22 DESCRIPTION 4 Product specification UCB1200 RESET (1) TYPE STATE input I/O C input I/O C input I ( ...
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... The not connected pins (pins 6, 19, 31 and 44) are reserved for future applications and should be left floating. 6. SIBDOUT reset state is 1 until the SIB bus is running. SIBDOUT will be active once the SIB bus has started. 1998 Jul 22 DESCRIPTION = analog output (pin 18) are connected internally within the UCB1200. 5 Product specification UCB1200 RESET (1) ...
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... IO7 1 IO8 2 IO9 3 ADCSYNC SSD n. SSA2 SPKRN 8 SPRKP 9 V DDA2 10 TOUTP 11 TOUTN 12 1998 Jul 22 UCB1200 XXX MXXxxx Fig.2 Pin configuration. 6 Product specification UCB1200 IO3 36 IO2 35 IO1 34 IO0 DDD n.c. 31 TSPX 30 TSMY 29 TSMX 28 TSPY SSA3 AD0 25 ...
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... Philips Semiconductors Advanced modem/audio analog front-end FUNCTIONAL DESCRIPTION The UCB1200 consists of several analog and digital sub circuits which can be programmed via the Serial Interface Bus (SIB). This enables the user to set the UCB1200 functionality according to actual application requirements. AUDIO CODEC The audio codec contains an input channel, built up with an 64 times oversampling sigma delta analog to digital converter (ADC) with digital decimation filters and a programmable gain microphone preamplifier ...
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... V SSA1 18 The UCB1200 audio codec input path accepts microphone signals directly, only a DC blocking capacitor is needed since the MICP input is biased around 1.4V. The ‘ground’ side of the microphone is either connected to the analog ground ( the MICGND pin. The latter will decrease the current consumption of active microphones, since the MICGND ssa1 pin is made Hi-Z when the audio codec input path is disabled ...
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... UCB1200 by a factor of 2. Fig.6 shows possible ways to connect a speaker to the driver. Loading the amplifiers with a capacitive load may cause high frequency oscillations and should be done cautiously. ...
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... AUD_OUT_ENA is set in the audio control register B. This provides the user the means to reduce the current consumption of the UCB1200 if one part of the audio codec is not used in the application. The audio codec has a loopback mode for system test purposes, which is activated when the AUDIO_LOOP bit in the audio control register B is set ...
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... Therefore the pass band of the voice band 1998 Jul 22 isolation transformer. The output path includes TEL_ATT TEL_LOOP TEL_MUTE Fig.7 Telecom codec block diagram. 11 Product specification UCB1200 1bit ADC 14 DIGITAL DECIMATION FILTER TEL_IN_ENA TEL_OUT_ENA 14 ...
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... TEL_MUTE in the telecom control register B. The output driver remains active in the mute mode, however no output signal is produced. Loading the drivers with a capacitive load may cause high frequency oscillations and should be done cautiously. 1998 Jul 22 line through an isolation transformer. The 12 Product specification UCB1200 ...
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... Philips Semiconductors Advanced modem/audio analog front-end TOUCH SCREEN MEASUREMENT MODES The UCB1200 contains an on chip interface for a 4 wire resistive touch screen. This interface supports three modes of touch screen measurements: position, pressure and plate resistance. POSITION MEASUREMENT Two position measurements are needed to determine the location of the pressed spot. First an X measurement, secondly a Y measurement ...
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... The current flowing through the touch screen is a direct indication for the resistance between both plates. A compensation for the series resistance, formed by the touch screen plates itself will improve the accuracy of this measurement. 1998 Jul 22 tspx tsmx 14 Product specification UCB1200 tspy ...
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... The plate resistance measurement is executed in the same way as the pressure resistance measurement. In this case only one of the two plates is biased and the other plate is kept floating. The current through the connected plate is again a direct indication of the connected resistance. 1998 Jul 22 tspx tsmx Fig.10 Touch screen setup for plate resistance. 15 Product specification UCB1200 tspy ...
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... The setting of each touch screen pin is programmable through the touch screen control register. Possible conflicting settings (grounding and powering of a touch screen pin at the same time) are detected by the UCB1200. In that case the touch screen pin will be grounded. ...
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... V screen and the UCB1200 does not consume power unless the touch screen is touched. The voltage on the X plate terminals drops if the screen is pressed. This voltage drop is detected by Schmitt-trigger circuits, of which the outputs are connected to the interrupt control block ...
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... Product specification UCB1200 ADC MULTIPLEXER SETTING defined by ADC_INPUT[n] touch screen current monitor defined by ADC_INPUT[n] defined by ADC_INPUT[n] TOUCH TOUCH TSMY SCREEN SCREEN MODE BIAS ADC_INPUT[n] position enabled (2) grounded ...
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... The ADC is controlled completely through the SIB interface, but the UCB1200 contains internal logic to ease the control of the ADC and to minimize the number of SIB frame read/write actions. A complete ADC control sequence analog to digital conversion consists of several phases. Firstly the ADC has to be enabled, secondly the input selector must be set to the proper input, thirdly the ADC conversion has to be started and finally the ADC result has to be read from register 11 ...
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... Product specification UCB1200 read adc result wait for start tracking wait for start tracking ...
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... Fig.16 ADC timing sequence, ADC sync mode, no changing ADC input multiplexer settings. 1998 Jul 22 tsibwrite tsibwrite set adc_start:1 set adc_start:0 tadcena wait for start wait for sync tadcsam3 tadcconv conversion tracking 21 Product specification UCB1200 read reg:11 wait for start tracking ...
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... ADC_RIS_INT bits in register 2 and 3) to ease the synchronization between the UCB1200 and the system controller. The ADC result is reset to 0x000, whenever the ADC is started or armed till the ADC conversion is completed. ADC_DAT_VAL in the SIB register 11 indicates the status of the ADC ...
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... Advanced modem/audio analog front-end AD[n] The applied voltage on the four analog inputs of the UCB1200 (AD0 - AD3) is attenuated before it is applied to the ADC input multiplexer using on chip resistive dividers.These high voltage inputs are optimized to handle voltages larger than the applied supply voltage. The built-in resistive voltage dividers are only activated if the corresponding analog input is selected ...
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... An external voltage reference connected to the VREFBYP pin is used as voltage reference by the UCB1200 circuit, if the EXT_REF_ENA bit (register 10) is set. Two bits in the ADC control register determine the mode of operation of this reference voltage circuit ...
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... Each SIB frame consists of at least 64 clock cycles. Typically 128 bits are used, divided into 2 sub frames of 64 bits each. The first word (the bits 0 to 63) is read and/or written by the UCB1200, the remaining bits may be used for communication between the system controller and another slave device. The SIBDOUT pin of the UCB1200 is tri-stated for the bit 64 and higher in the SIB frame to prevent bus conflicts with other slave devices ...
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... Fig.21 Serial data transmission of the UCB1200 The applied clock signal to the SIBCLK pin is used as clock signal inside the UCB1200; all internal clock signals are derived from that required that the SIBCLK signal is applied if one or more analog or digital functions are activated in the UCB1200 ...
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... SIBDIN stream, The read data is sent by the UCB1200 within the control register data field of SIBDOUT during the same frame as the read request occurred. In addition, during a read cycle, the control register data field of SIBDIN is ignored by the UCB1200 which implies that no modifications of the UCB1200 settings can be performed when the “ ...
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... SIBDIN data stream. sibclk sibsync sibdin sibdout 1998 Jul 22 bit 64 Fig.22 Control register update timing. tsibclk tpcldo tsclsy thclsy Fig.23 Timing definitions SIB interface 28 Product specification UCB1200 bit 65 bit 66 tpcdu tscldi thcldi tpdido ...
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... Advanced modem/audio analog front-end GENERAL PURPOSE I/O The UCB1200 has 10 programmable digital input/output (I/O) pins. These pins can be independently programmed as input or output using IO_DIR[0:9] in control register 1. The output data is determined by the content of IO_DATA[n] in control register 0, while the actual status of these pins can be read from the IO_DATA[n] bits in control register 0. ...
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... Advanced modem/audio analog front-end INTERRUPT CIRCUIT The UCB1200 contains a programmable interrupt control block, which can generate an interrupt for a '0' to '1' and/or a '1' to '0' transition on one or more of the IO0-IO9 pins, the audio and telecom clip detect, the adc_ready signal and the TSPX and TSMX signals. ...
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... Philips Semiconductors Advanced modem/audio analog front-end RESET CIRCUIT RESET is captured in the UCB1200 using a asynchronous pulse stretching circuit. RESET may be pulled down when the SIBCLK is still stopped. The internal circuit remembers this reset signal and generates an internal reset signal for at least 5 SIBCLK periods. ...
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... Advanced modem/audio analog front-end POWER ROUTING STRATEGY The UCB1200 has nine power supply pins, since the UCB1200 contains five power supply regions within the circuit. The analog and digital parts have their separate power supplies to reduce the interference between these parts. The speaker ...
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... Fig.29 Recommended power supply connection strategy, dual power supply systems. The V pins and the V pin are connected within the UCB1200 circuit recommended to connect the V SSD SSA1 and the V directly to a ground plane on the PCB. The split in power supply connections should be maintained on the SSA1 PCB to get optimal separation ...
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... Philips Semiconductors Advanced modem/audio analog front-end APPLICATION INFORMATION In this chapter some application information is contained. More information will be available when an Application Note on UCB1200 is published. Sidetone suppression circuit 1:1 transformer Fig.30 Typical telecom codec sidetone suppression circuit (without protection circuits). An important built-in feature of the telecom codec is the sidetone suppression circuit. The sidetone suppression circuit is activated when TEL_SIDE_ENA in the telecom control register B is set ...
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... Philips Semiconductors Advanced modem/audio analog front-end A typical transformer has 156 winding impedance, thus R voltage is therefore: 156 300 + ------------------------------------------ = i(tel) o(tel) 156 300 144 + + 1998 Jul 22 should be 144 . The ratio of the telecom input and output o 456 V --------- - o(tel) 600 35 Product specification UCB1200 ...
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... START OF CODEC DATA TRANSFER The UCB1200 internal sample counters are started at the beginning of the first SIB frame following the SIB frame in which the codec input and/or output path is enabled. This implies that the sample rate divisor has to be programmed before the codec input and/or output path is enabled, Fig ...
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... The codec data in the SIB frames is only processed in the UCB1200 if the appropriate data valid flag is set in the frame; the data is discarded when the data flag equals ‘0’. Figure 32 shows the basic codec data synchronization principle used in the UCB1200. ...
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... UCB1200 CODEC DATA TRANSFER FROM THE The data resulting from the UCB1200 codec ADC (input) paths is transfer to the system controller at the programmed codec sample rate. However the codec data is synchronized with the SIB frame repetition rate. Figure 33 shows the basic synchronization principle used inside the UCB1200. Codec data will be present in each SIB frame produced by the UCB1200 ...
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... Parameters are valid over the ambient operating temperature unless otherwise specified. All voltages are with respect to V (pin 37), unless otherwise noted. SSD THERMAL CHARACTERISTICS SYMBOL R thermal resistance from junction to ambient in free air th(j-a) 1998 Jul 22 PARAMETER PARAMETER 39 Product specification UCB1200 MIN. MAX. UNIT 0.5 +5 0.5 +8.5 ...
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... ADC activated no analog functions activated (1)(2) speaker driver enabled speaker driver disabled Product specification UCB1200 = 1.2 V; all voltages referenced to V I(ref) MIN. TYP. MAX. 3.0 3.3 3.6 3.0 3.3 3.6 3.0 3.3 3.6 0 ...
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... MICP attenuation = 0 dB, differentially measured between SKPRN and SPRKP SPKRP/SKPRN 41 Product specification UCB1200 ; T = 1.2 V; amb I(ref) MIN. TYP. MAX 100 125 1.35 1 200 1 1 ...
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... MICP 600 line impedance; 1:1 20 transformer with 156 winding resistance 42 Product specification UCB1200 TYP. MAX. UNIT bit 1 LSB - kHz 370 410 mV 1 ...
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... ADO AD1 AD2 V = 7.5 V AD3 43 Product specification UCB1200 MIN. TYP. MAX. 1.35 - 1.85 1.2 1 -65 1 600 100 1.8 10 2500 50 50 ...
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... ADC multiplexer settings non synchronization mode; changing ADC multiplexer settings synchronization mode; t SIBCLK rising edge ADCSYNC to sample moment 5t SIBCLK 5 1.0 0 note 13 note 14 note Product specification UCB1200 TYP. MAX. UNIT 2 LSB 3 LSB SIBCLK 51t ns SIBCLK 1.5t ns SIBCLK 102t ns SIBCLK ...
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... All curves repeat around the sample frequency f 17. Any touch-screen resistor above the maximum will not reach full scale and not saturate the ADC 18. The threshold can be used to verify a valid touch using pressure measurement. 1998 Jul for audio- respectively telecom codec Product specification UCB1200 ...
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... Advanced modem/audio analog front-end FREQUENCY RESPONSE CURVES 0dB SBRia Fpla 0dB SBRoa Fpla 1998 Jul 22 RIPia Frequency [Hz] Fig.35 Audio input path frequency response. RIPoa Frequency [Hz] Fig.36 Audio output filter frequency response. 46 Product specification UCB1200 f = 0.0016 f pla 0.42 f pha 0.6 f sha sa Fpha ...
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... Advanced modem/audio analog front-end 0dB SBRvti SBRsht Fplt Fvlt 0dB SBRhto Fplt 1998 Jul 22 RIPti Voice filter enabled Fvht Fig.37 Telecom input frequency response RIPto Frequency [Hz] Fig.38 Telecom output frequency response. 47 Product specification UCB1200 f = 0.00016 f plt 0.42 f pht sht st f 0.018 f = ...
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... A '0' to '1' transition clears the interrupt of the TSPX signal. Returns the actual interrupt status of the TSPX signal. A '0' to '1' transition clears the interrupt of the TSMX signal. Returns the actual interrupt status of the TSMX signal. 48 Product specification UCB1200 RESET ...
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... If '1', the audio codec output path is activated. If ‘1’, the TSMX pin is powered. If ‘1’, the TSPX pin is powered. If ‘1’, the TSMY pin is powered. If ‘1’, the TSPY pin is powered. If ‘1’, the TSMX pin is grounded. 49 Product specification UCB1200 RESET ...
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... Returns 000100 for all the UCB1200 circuits meeting this specification Returns 000000 for all the UCB1200 circuits meeting this specification Returns 0001 for all the UCB1200 circuits meeting this specification If ‘1’, the analog audio test mode is activated. If ‘1’, the analog telecom test mode is activated. ...
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... Address 14: Reserved Address 15: NULL register Notes 1. Activating one or more test modes changes the functionality of the UCB1200. 2. TEST (pin 13) must be HIGH when writing to these bits. 1998 Jul 22 REMARK If ‘1’, the dynamic data valid flag mode is activated for both the audio and the telecom data valid fl ...
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... 2 scale (1) ( 0.18 7.1 7.1 9.15 9.15 0.5 1.0 0.12 6.9 6.9 8.85 8.85 REFERENCES JEDEC EIAJ 52 Product specification UCB1200 SOT313 detail X (1) ( 0.75 0.69 0.95 0.95 0.2 0.12 0.1 0.45 0.59 0.55 0.55 EUROPEAN ISSUE DATE PROJECTION 93-06-15 94-12- ...
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... V) applied to the flat part of the lead. Contact time must be limited to 10 seconds 300 C. When using a dedicated tool, all other leads can be soldered in one operation within seconds between 270 and 320 C. 1998 Jul 22 53 Product specification UCB1200 ...
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... Philips Semiconductors 811 East Arques Avenue P.O. Box 3409 Sunnyvale, California 94088-3409 Telephone 800-234-7381 1998 Jul 22 @ Copyright PHilips Electronics North America Corporation 1998 All rigths reserved. Printed in U.S.A. Document order number: 54 Product specification UCB1200 Date of release: 02-98 9397 750 04055 ...