em91403

Manufacturer Part Numberem91403
DescriptionTone/pulse Switchable Dialer With Lcd Interface And Dual-tone Melody Generator Tone/pulse Switchable Dialer With Lcd Interface And Dual-tone Melody Generator
ManufacturerELAN Microelectronics Corp
em91403 datasheet
 


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GENERAL DESCRIPTION
The EM91403 is a series of tone/pulse switchable dialers that is composed of T/P dialer and T/P dialer with
3 sets memories. The EM91403 series provide necessary functions of telephone set for application in any
environment, such as Pulse dialing, Tone (DTMF) dialing, Handfree dialing, keying tone ,and lock functions.
The lock function is designed to inhibit toll dialing operation. Beside this, melody generator, ring detector and
SDO (Serial Data Output) functions are provided in advance version. Melody generator will output dual-tone
music in line hold duration. Ring detector can prevent illegal dialing from pocket dialer. The SDO is designed
to drive LCD driver and voice synthesizer. In this application, the dialing numbers can be displayed on LCD
screen with EM32100 ( or EM32116 ).
FEATURES
• Tone/Pulse switchable.
Wide operating voltage from 2.0 V to 5.5 V.
Low operating current, 0.15 mA (Pulse) and 0.3 mA (Tone) typically.
• Adding resistor on keyboard scan pin that can select many telephone specifications, such as : Pulse rate,
M/B ratio, Flash time, lock dialing functions.
• SDO function supports LCD driver and voice synthesizer to indicate dialing numbers.
• Line hold function is designed for stopping conversation temporality.
• Melody generator provides music on hold function.
• Lock function provides conventionality key lock and password lock operations.
• Ring detector is designed to prevent illegal dialing from pocket dialer.
• 3-set one touch repertory memory, each one can hold data up to 16 digits.
• A 32-digit LNB (last number) redial memory.
• Keytone function provides rapidly keying recognition.
• Handfree function provides on-hook dialing and speakerphone application.
• Pause and P-T time are fixed to 3.6 seconds.
• Tone duration and inter-tone pause time are fixed to 98 ms.
• Using 3.579545 MHz crystal or ceramic resonator.
• Package forms: PDIP, skinny.
ORDERING INFORMATION
Versions list and function outline
VERSION
LNB
EM91403A
EM91403B
EM91403C
EM91403D
Note : PDP = Pocket Dialer Prevented
* This specification are subject to be changed without notice.
TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
AND DUAL-TONE MELODY GENERATOR
AND DUAL-TONE MELODY GENERATOR
KT
HOLD(music)
LOCK
EM91403 SERIES
EM91403 SERIES
HF
SDO(LCD)
PDP
10.1.1997
1

em91403 Summary of contents

  • Page 1

    ... GENERAL DESCRIPTION The EM91403 is a series of tone/pulse switchable dialers that is composed of T/P dialer and T/P dialer with 3 sets memories. The EM91403 series provide necessary functions of telephone set for application in any environment, such as Pulse dialing, Tone (DTMF) dialing, Handfree dialing, keying tone ,and lock functions. ...

  • Page 2

    ... HKS 9 14 VDD 10 13 DTMF 11 12 HFO COL1 COL2 COL3 COL4/ */ RD/P EM91403 SERIES EM91403BP 1 20 COL5 HDO 2 19 COL4/ COL3 ROW4 4 17 COL2 ROW3 5 16 COL1 ROW2 6 15 XIN ROW1 7 14 XOUT HKS 8 ...

  • Page 3

    ... TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE AND DUAL-TONE MELODY GENERATOR RMUTE HFO HDO SDO XMUTE Row/Column Output circuit programming counter latch Memory & (Melody) decoder Timing/Control circuit Pulse generator Input circuit VDD VDD HFI HKS DRING Function EM91403 SERIES D/A DTMF converter PO 10.1.1997 3 ...

  • Page 4

    ... RMUTE can be restored to “High” level when the first key entry is not the optioned lock-number . NC No connection. * This specification are subject to be changed without notice. TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE AND DUAL-TONE MELODY GENERATOR Function EM91403 SERIES 10.1.1997 4 ...

  • Page 5

    ... FUNCTION DESCRIPTIONS Dialing signal selection The EM91403 series incorporated a special keyboard scanning function that is connecting a resistor (typically is 560 Kohms) on keyboard scan pin to select many telephone specifications. The specifications are described as following : a. Mode ROW1 Mode R-Vdd 20 PPS NR Tone R-Vss 10 PPS c. Flash time ...

  • Page 6

    ... LNB memory will be dialed output. Repertory memory The EM91403 series incorporated several sets repertory memory and each one can store number digits. These memories were designed to 3 sets types. In memory storing, if stored numbers are more than 16 digits that only the previous 16 digits can be stored into specific memory ...

  • Page 7

    ... The dummy number “3” is not detected by the centered office or PABX ,but the following numbers “0” ,1,2,3... long distance call can be dialed out normally since the leading number “3” is not the Lock-number defined in EM91403 series. To prevent the unavoidable long distance call, then EM91403 inhibits the key entry during Tdly. ...

  • Page 8

    ... On-hook, HD line Note : F=floating (high impedance); H=logic “High”; L=logic “Low” level. Music on Hold EM91403 series built-in a melody generator to generate dual-tone music on DTMF output pin. The music is designed for telephone line at line holding. SDO (Serial Data Output) function The SDO is serial data output which format is same as UART protocol. SDO function is designed to drive LCD driver and voice synthesizer ...

  • Page 9

    ... EM91403 SERIES 1 0 bit5 stop bits 9 0 “*”/ */”T” bit1 bit0 Display ...

  • Page 10

    ... LOCK function The EM91403 serial provides the LOCK function to inhibit toll dialing operation. Connecting a resistor on COL1 pin to VSS can select different LOCK control method that is conventional key lock or password lock. Also the lock number that can be selected by connecting the resistors on COL2 or COL3 pin. After power on reset, the password is fixed to 000 automatically ...

  • Page 11

    ... ViH 0.8Vdd - ViL Vss - IoH 0.2 - IoL -0.2 - IoH - - Rhfi - 200 Rdring - 100 IoH 2 10 IoL 200 400 IoH 0.2 - IoL 0.2 - EM91403 SERIES ) SS Unit V +0. Fosc=3.579545 MHz) SS Max. Unit Condition 5.5 V unload 5.5 0.3 unload 0.5 mA 0.3 with pull up/down 0.5 resistor * 8 0.1 uA HKS=1,Vdd=1V 0.1 unload 10 uA ...

  • Page 12

    ... Vmtac (-25.3) Vstac Thdrdb - 280 - Tbit 3.8 3.9 4.1 Tdly - 300 - EM91403 SERIES Condition sec. sec. Row3B, Row4B=NR Row3B, Row4B=NR, R-Vss Row3B,Row4B=R-Vss, NR Row3B,Row4B=R-Vss,R-Vss pps Row1 = R-Vdd Row1 = R-Vss % Row2 = NR Row2 = R-Vss ms PSR = 10 pps PSR = 20 pps mA Vdtmf = 0.5 V Vdd Vdd = 2 ...

  • Page 13

    ... COL1 (f5) COL2 (f6) COL3 (f7) * This specification are subject to be changed without notice. TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE AND DUAL-TONE MELODY GENERATOR Actual output (Hz) 697 699.1 770 766.2 852 847.4 941 947.9 1209 1215.8 1336 1331.6 1477 1471.8 EM91403 SERIES Deviation (%) 0.30 0.49 -0.53 0.73 0.56 -0.32 -0.35 10.1.1997 13 ...

  • Page 14

    ... This specification are subject to be changed without notice. TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE 3 Tkt Tm T Tidp Figure 1. Pulse mode operating timing 2 Tdb Td Titp Figure 2. DTMF mode operating timing EM91403 SERIES AND DUAL-TONE MELODY GENERATOR Tidp Hi-impedance 3 Titp Hi-impedance 10.1.1997 14 ...

  • Page 15

    ... This specification are subject to be changed without notice. TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE AND DUAL-TONE MELODY GENERATOR Tkt Tm Tidp Tidp Figure 3. Pulse mode LNB redial timing Tkt Td Td Titp Figure 4. DTMF mode LNB redial timing EM91403 SERIES Hi-impedance Titp Hi-impedance 10.1.1997 15 ...

  • Page 16

    ... DTMF OSC. * This specification are subject to be changed without notice. TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE RD Tidp Figure 5. Pause key operating timing */T 3 Tpt F Tfp=300ms Tf Figure 7. Flash key operating timing EM91403 SERIES AND DUAL-TONE MELODY GENERATOR Hi-impedance 4 Hi-impedance Hi-impedance 10.1.1997 16 ...

  • Page 17

    ... Tbit Figure 8. SDO operating timing Figure 9. HF and HD operating timing 5 0 "0" digit dialing time Figure 10. Off-Hook delay time EM91403 SERIES Hi-impedance 280 Thdrdb ms Hi-impedance Hi-impedance 10.1.1997 17 ...

  • Page 18

    ... The external ring detection circuit must send a low signal at the total ring cycle (Ton and Toff) RING DRING HKS RMUTE * This specification are subject to be changed without notice. TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE AND DUAL-TONE MELODY GENERATOR Toff Figure 11. Timing of receiving an incoming call Figure 12. Timing of making an outgoing call EM91403 SERIES 10.1.1997 18 ...

  • Page 19

    ... APPLICATION CIRCUIT EM91403 series Application circuit * This specification are subject to be changed without notice. TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE AND DUAL-TONE MELODY GENERATOR RMUTE DRING 13 12 HFO HFI 14 11 DTMF VSS 15 10 VDD XMUTE 16 9 HKS XOUT 8 17 ROW1 XIN ...

  • Page 20

    ... Package type : QFP 48 pins or chip form provided * This specification are subject to be changed without notice. TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE AND DUAL-TONE MELODY GENERATOR NC 12 ENRTC 11 24/ XOUT XIN HKS 4 SD1 3 MS2 2 MS1 1 EM91403 SERIES 10.1.1997 20 ...

  • Page 21

    ... HKS SEG15 DD V SEG16 SEG17 V2 SEG18 V3 SEG19 VC1 SEG20 VC2 SEG21 VSS SEG22 XIN SEG23 XOUT SEG24 SEG25 EM91403 SERIES SEG0 SEG1 SEG2 SEG3 SEG4 SEG5 SEG6 SEG7 SEG8 SEG9 SEG10 SEG11 SEG12 SEG13 SEG14 SEG15 SEG16 SEG17 SEG18 SEG19 SEG20 ...

  • Page 22

    ... E 7.620 8.255 .300 .325 E1 6.096 7.112 .240 .280 e 2.286 2.794 .090 .110 eB - 10.92 - .430 L 2.921 4.064 .115 .160 EM91403 SERIES PDIP MILIMETERS INCHES DIM MIN. MAX. MIN. MAX 6.350 - - A1 0.381 - .015 B 0.356 0.558 .014 B1 1.016 1.778 .040 C 0 ...

  • Page 23

    ... C 0.204 1.02 1.05 D 31.24 .300 .325 E 7.620 .245 .260 E1 6.223 .090 .110 e 2.286 .330 .400 eB 8.636 .115 .160 L 2.921 EM91403 SERIES PDIP (skinny) INCHES MAX. MIN. MAX. 4.572 - .180 - .015 - 0.558 .014 .022 1.778 .050 .070 0.381 .008 .015 32.26 1.23 1 ...

  • Page 24

    ... B1 0.914 1.116 0.036 C 0.204 0.304 0.008 D 36.70 37.34 1.445 E1 13.84 14.10 0.545 e 1.727 1.829 0.068 eB 15.24 17.78 0.600 D1 0 0.127 0 L 2.921 3.429 0.115 EM91403 SERIES AND DUAL-TONE MELODY GENERATOR E1 A1 INCHES MAX. 0.200 - 0.165 0.022 0.044 0.012 1.470 0.555 0.072 0.70 0.005 0.135 10.1.1997 ...