w91031 Winbond Electronics Corp America, w91031 Datasheet
w91031
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w91031 Summary of contents
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... Winbond. Winbond provides this document for reference purposes of W-based system design only. Winbond assumes no responsibility for errors or omissions. All data and specifications are subject to change without notice. Preliminary W91031 CALLING LINE IDENTIFIER Publication Release Date: August 2000 ...
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... There are two types of Caller Identifications, the first type is on-hook calling with caller ID message and the second type is call on waiting. The W91031 device provides all the features and functions of the Caller Identification specification for both these types, including FSK demodulation, Tone Alert Signal detection and ring detection ...
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... FSK Data interface MODE select. Sets the FSK data output interface in mode 0 when low mode 1 when high. 10 OSCI I Oscillator Input. A 3.579545 MHz crystal or ceramic resonator should be connected between this pin and the OSCO pin. May be driven by an external clock source. Preliminary W91031 ALGRC ...
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... Dual tone Alert signal Guard time RC (CMOS output and internal voltage comparator input). An external resistor must be connected between this pin and ALGR and an external capacitor between this pin and V implement guard time detection Power supply input. DD Preliminary W91031 DESCRIPTION for normal operation ...
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... The ring signal is detected by the W91031 device and then an interrupt sent to the microcontroller. The ring detected signal will also be directed to the ringer circuit. The data can be decoded by the microcontroller and displayed on the LCD display ...
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... OSCI OSCO Figure 6. The Block Diagram of Winbond Caller ID FUNCTIONAL DESCRIPTION Figure 6 is shown functional blocks of W91031. The device must operate with a 3.579545 MHz system clock and consists four major functions and decribed as follows: Ring Detector The application circuit in Figure 7-1 illustrates the relationship between the RNGDI, RNGRC and RNGON signals ...
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... R1 and R2 are used to set the maximum loading and must be of equal value to achieve balanced loading at both the tip and ring line. R1, R3 and R4 form a resistor divider to supply a reduced voltage to the RNGDI input. The attenuation value is determined by the detection of minimal ring voltage and maximum noise tolerance between tip/ring and ground. Preliminary W91031 200K ...
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... ALGO returns low. To obtain unequal present and absent guard times, a diode can be connected as shown in Figure 7-6, to give the unequal resistance required during capacitor charging and discharging. Preliminary W91031 . It is also used to select the input gain by connecting a SS ...
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... 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 Switch Figure 7-5. Guard Time Waveform of ALGR, ALGRC and ALGO Pins Preliminary W91031 VDD Discharge Switch ALGRC CPth Charge Switch ALGR ALGO CPth t ABS ON ON ...
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... The 3-wire interface, DCLK, DATA and FDRN pins, form the data interface of the FSK demodulation. The DCLK pin is the data clock which is either generated by the W91031 external device. The DATA pin is the serial data pin that outputs data to external devices. The FDRN pin is the data ready signal, also an output from the W91031 to external devices ...
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... Figure 7-7. Serial Data Interface Timing of FSK Demodulation in Mode 0 Mode 1 (MODE = high): The W91031 processes the FSK signal and sets the FDRN pin low to denote the 8-bit boundary and to indicate to the microcontroller that new data has been transmitted. FDRN will return high on the first rising edge of DCLK ...
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... Sleep Mode The W91031 can go into a sleep mode by setting SLEEP high, resulting in reduced power consumption. In this mode, the gain control op-amp, oscillator and all internal circuits, except the ring detector are disabled. The RNGDI, RNGRC and RNGON pins are not affected, so the device can still react to call arrival indicators and activate an interrupt to wake up the microcontroller ...
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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 need for external components. If other clock sources are used, the OSCI pin should be driven by a clock source and the OSCO pin used to drive other external clocked devices, or left open ...
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... The DC electrical characteristics supersede the recommended operating conditions unless otherwise stated PARAMETER CONDITION Operating Supply Voltage Standby Supply Current Operating Supply Current FSKE = FSK Mode FSKE = Alert Mode FSKE = FSK Mode FSKE = Alert Mode Preliminary W91031 SYMBOL (Note SYMBOL ...
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... C are design aids only, not guaranteed and not subject to production DD testing 0 0 OUT Magnitude measurement, ignore signs. 6. Output - no load. Preliminary W91031 SYM. MIN. VT+ 0. SLEEP VT- 0. VHYS 0 FSKE 0 0.5 OL INTN RNGRC I 2 ...
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... These characteristics are for and temperature = Both tones have the same amplitude. Both tones are at the nominal frequencies. 5: Band limited random noise 300 3400 Hz. Present only when the tone is present. Preliminary W91031 SYM. MIN. TYP.* MAX. UNITS TEST CONDITIONS ...
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... Note: " * " typical figure are and temperature = 25 C are design aids only, not guaranteed and not subject to DD production testing. FSK Detection PARAMETER FSK Detection Enable Time Input FSK to FCDN Low Delay Preliminary W91031 SYMBOL MIN. TYP. FMARK 1188 1200 FSPACE ...
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... Rise Time DCLK Low Set-up to FDRN DCLK Low Hold Time After FDRN Note: " * " typical figure are and temperature = 25 C are design aids only, not guaranteed and not subject to DD production testing. Preliminary W91031 SYMBOL CONDITION MIN. tCA FCDN 8 8 CONDITION MIN ...
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... FSKE Note t CP FCDN Figure 8-3. FSK Detection Enable and FSK Carrier Detect Present and Absent Timing Note: The minimal delay from FSKE high to FCDN high is t elapsed. Preliminary W91031 Figure 8-1. Wake up and Sleep Down Timing Alerting Signal the alerting signal is present before t ...
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... IDD 1st byte data start DATA DCLK FDRN * Mark bit or redundant stop bit(s), will be omitted. Figure 8-6. Serial Data Interface Timing of FSK Demodulation in Mode 0 Preliminary W91031 t CDD ...
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... Nth byte data Notes: 1. FDRN cleared to high by DCLK. 2. FDRN not cleared, low for maximum time (1/2 bit width). Figure 8-8. Serial Data Interface Timing of FSK Demodulation in Mode 1 Preliminary W91031 1)th byte data stop start ...
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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 op-amp is set to unity gain to allow the electrical characteristics to be met in this application circuit ...
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... Bellcore off-hook data transmission. Figure 9-5 is the timing diagram for the BT caller display service on-hook data transmission and Figure 9-6 is the timing diagram for the BT caller display service off-hook data transmission. Figure 9-7 is the timing diagram for the CCA caller display service for on-hook data transmission. Preliminary W91031 34K W91031 INP ...
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... The W91031 may not be woken up at this ring signal after the FSK data has been processed the W91031 has been woken up at the 2nd ring, the microcontroller times out if FCDN is not activated and then puts the W91031 into a sleep condition. ...
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... FSKE should be set low when FCDN has become inactive. 5. For unsuccessful attempts where the end office does not send the FSK signal, the CPE should disable FSKE, unmute the handset and enable the keypad after this interval has elapsed. Preliminary W91031 CPE mutes handset & disables keypad CPE sends ...
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... The FSKE pin should be set low to disable the FSK demodulator when FSK is not expected. The tone alerting signal speech and the DTMF tones are in the same frequency band as the FSK signal. 4. The W91031 may not be woken up at this ring signal after the FSK data has been processed. Preliminary W91031 Ch ...
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... FSKE should be set low when FCDN has become inactive unsuccessful attempts where the exchange does not send the FSK signal, the CPE should disable FSKE, unmute the handset and enable the keypad after this interval. Preliminary W91031 CPE mutes handset & disables keypad CPE sends ...
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... TW/P & E/312 specifies that the AC and DC loads should be removed between 50 150 mS after the end of the FSK signal. The W91031 may also be placed in a sleep condition. 4. The W91031 may not be woken up at the first ring cycle after the FSK data had been processed. Preliminary W91031 Ch ...
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... FAX: 886-2-27197502 FAX: 886-2-27197502 Note: All data and specifications are subject to change withou Note: All data and specifications are subject to change withou Preliminary W91031 Winbond Electronics North America Corp. Winbond Electronics North America Corp. Winbond Memory Lab. Winbond Memory Lab. ...