W91031SG Nuvoton Technology Corporation of America, W91031SG Datasheet
W91031SG
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W91031SG Summary of contents
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Table of Contents- GENERAL DESCRIPTION ..............................................................................................................................2 FEATURES AND APPLICATIONS..................................................................................................................2 Features ........................................................................................................................................................2 Applications...................................................................................................................................................2 PIN CONFIGURATION ....................................................................................................................................3 PIN DESCRIPTION..........................................................................................................................................3 SYSTEM DIAGRAM ........................................................................................................................................5 BLOCK DIAGRAM ...........................................................................................................................................6 FUNCTIONAL DESCRIPTION ........................................................................................................................6 Ring Detector.................................................................................................................................................6 Input Pre-processor .......................................................................................................................................8 Dual Tone Alert Signal Detection....................................................................................................................8 FSK Demodulation.......................................................................................................................................10 Other Functions ...
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GENERAL DESCRIPTION The Winbond Caller Identification device W91031 low power CMOS integrated circuit used to receive physical layer signals transmitted according to Bellcore and British Telecom (BT) specifications. There are two types of Caller Identifications, the first type ...
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PIN CONFIGURATION RNGRC RNGON PIN DESCRIPTION PIN NAME TYPE 1 INP I Non-inverting Input of the gain control op-amp. 2 INN I Inverting Input of the gain control op-amp. 3 GCFB O Op-amp Feed-back Gain Control signal. Select the input ...
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Pin Descriptions, continued PIN NAME TYPE 11 OSCO O Oscillator Output. A 3.579545 MHz crystal or ceramic resonator should be connected between this pin and the OSCI pin. Should left open or to drive another clocked device when an external ...
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SYSTEM DIAGRAM The W91031 device applications include telephone systems which have caller ID features and which can display the calling message on an LCD display. Figure 5 shows the system diagram. It illustrates how to use the chip to connect ...
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BLOCK DIAGRAM Input Pre-processor INP + Anti-alias Filter INN - GCFB To internal VREF circuit Bias Voltage Generator SLEEP/ RESET To internal circuit VDD Oscillator & Clock Driver VSS OSCI OSCO FUNCTIONAL DESCRIPTION Figure 6 is shown functional blocks of ...
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C1 = 0.1uF Tip 0.1uF Ring/B Allowance minimal ring voltage (peak to peak) is: Vpp = 2 (V (max ring) T+(max) Tolerance to noise between Tip and Ring and Vss is: Vpeak = V (max noise) Time constant ...
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Input Pre-processor The input signal is processed by an Input Pre-processor, which is added to the offset voltage to adjust the input amplitude and to filter out unwanted frequencies. The gain control op-amp is used to bias the input voltage ...
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W91031 Dual tone detected Capacitor Charge/Discharge Control Circuit + - Comparator Figure 7-4. Guard Time Circuit of Dual Tone Alert Signal Detection Tip/Ring Alerting Signal t DP ALGR t GP ALGRC V CPth t REC ALGO Discharge Switch Charge ON ...
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W91031 V ALGRC ALR (a) t > CPth [( R2 ...
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Mode 0 (MODE = low): The W91031 processes the FSK signal and outputs signals on the DCLK, DATA and FDRN pins. Figure 7-7 shows the timing diagram of the 3-wire signals and the input of the FSK signal in mode ...
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Nth byte data Demodulated internal b6 b7 bit stream FDRN DCLK DATA 1)th byte data Notes: 1. FDRN cleared to high by DCLK. 2. FDRN not cleared, low for maximum time (1/2 bit width). Figure ...
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Crystal Oscillator The operation frequency of the W91031 is 3.579545 MHz. Crystal oscillators, ceramic resonators or other clock sources can be used. A crystal oscillator or ceramic resonator can be directly connected to the OSCI and OSCO pins without the ...
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ELECTRICAL CHARACTERISTICS Absolute Maximum Ratings (Voltage referenced to V pin) SS PARAMETER Supply Voltage with Respect to V Voltage on Any Pin Other Than Supplies Current on Any Pin Other Than Supplies Storage Temperature Notes +0.7 should not ...
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DC Electrical Characteristics, continued PARAMETER Schmitt Input High Threshold Schmitt Input Low Threshold Schmitt Hysteresis CMOS Input High Voltage CMOS Input Low Voltage Output High Source Current Output Low Sink Current Input Current 1 Input Current 2 Output High-Z Current ...
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Electrical Characteristics - Gain Control OP-Amplifier (Electrical characteristics supersede the recommended operating conditions unless otherwise stated.) PARAMETER Input Leakage Current Input Resistance Input Offset Voltage Power Supply Rejection Ratio Maximum Capacitive Load (GCFB) Maximum Resistive Load (GCFB) Note: " * ...
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FSK Detection PARAMETER Input Frequency Detection Bell 202 Mark (logic 1) Bell 202 Space (logic 0) CCITT V.23 Mark (logic 1) CCITT V.23 Space (logic 0) Maximum Input Signal Level Input Sensitivity Transmission Rate Input Noise Tolerance Notes: 1: Both ...
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FSK Detection, continued PARAMETER Input FSK to FCDN High Delay Hysteresis Note: " * " typical figure are and temperature = 25 C are design aids only, not guaranteed and not subject to DD production testing. ...
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SLEEP t WAKE OSCO Tip/Ring t ALTE FSKE Note ALGR Figure 8-2. Alert Detection Enable and Alert Signal Present and Absent Detect Timing Note: The minimal delay from FSKE low to ALGR high is t Tip/Ring t FSKE FSKE Note ...
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R DATA DCLK Figure 8-4. Data and DCLK Mode 0 Ouput Timing t RF FDRN V = 0.7 ...
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DCLK Figure 8-7. DCLK Mode 1 Input Timing Nth byte data stop start Demodulated internal bit stream FDRN Note 1 t DDS ...
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APPLICATION INFORMATION Application Circuit The application circuit of the W91031 in Figure 9-1 shows the device being used within a typical CPE system. Note that only the circuit between the W91031 and the line interface is shown. The gain control ...
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V 22nF Tip/A 430K V 22nF Ring/B 430K 0.33uF 0.1uF 12K + Vz - Resistor must have 1% tolerance. Resistor may have 5% tolerance. Crystal is 3.579545MHz with 0.1% frequency tolerance. Figure 9-2. Application Circuit with Improved Common Mode Noise ...
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Tip/Ring 1st Ring A INTN (M-mode or C-mode) RNGON SLEEP Note 1 FSKE Note 2 DET (C-mode) FCDN FDRN DCLK DATA Figure 9-3. Input and Output Timing of Bellcore On-hook Data Transmission Notes : 1. The CPE designer may choose ...
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CPE goes off-hook Tip/Ring Note 1 SLEEP INTN t REC ALGO FSKE Note 2 FCDN FDRN DCLK DATA Figure 9-4. Input and Output Timing of Bellcore Off-hook Data Transmission ...
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Line Reversal A/B Wires Alert Signal A RNGON SLEEP INTN t REC ALGO TE DC load < 120 load FSKE FCDN FDRN DCLK DATA Figure 9-5. Input and Output Timing of BT Idle State (On-hook) Data Transmission ...
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CPE goes off-hook Start Point Tip/Ring Alert Signal A Note 1 Note 3 SLEEP INTN t REC ALGO FSKE Note 2 FCDN FDRN DCLK DATA Figure 9-6. Input and Output Timing of BT Loop State (Off-hook) Data Transmission A = ...
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Line Reversal A/B Wires Ring Burst A RNGON SLEEP INTN TE DC load 250 - 400 load FSKE Note 1 FCDN FDRN DCLK DATA Figure 9-7. Input and Output Timing of CCA Caller Display Service Data Transmission ...
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Winbond Electronics (H.K.) Ltd. Winbond Electronics (H.K.) Ltd. Headquarters Headquarters Unit 9-15, 22F, Millennium City, Unit 9-15, 22F, Millennium City, No. 4, Creation Rd. III, No. 4, Creation Rd. III, No. 378 Kwun Tong Rd; No. 378 Kwun Tong Rd; ...