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EM91710A / B EM91710A / B

TONE / PULSE SWITCHABLE DIALER TONE / PULES SWITCHABLE DIALER

EM91710A / B EM91710A / B
TONE / PULSE SWITCHABLE DIALER TONE / PULES SWITCHABLE DIALER
GENERAL DESCRIPTION
The EM91710A / B are Tone / Pulse switchable dialer which are fabricated in CMOS technology with wide operating voltage for both tone and pulse mode, and consumes very low memory retention current in ON-HOOK state. FEATURES · · · · · · · · Tone / pulse switchable dialer. One 32-digit last number redial memory. Pulse to tone (PT) is provided for PBX operation. Flash key is available. Minimum tone duration is 98ms or 83ms. Minimum intertone pause is 98ms or 83ms. Uses 3.579545 MHz crystal or ceramic resonator. Many options can be selected. Mode (10 PPS 20 PPS Tone) M / B ratio (40 : 60 33 : 66) Pause time (3.6s) Flash function (RESET) PT pause time (3.6s) Flash time (600ms 300ms 100ms or 80ms). Mixed dialing. Handfree function is provided for speaker phone application. Power on reset circuit is provided. Package in DIP18 or DIP16.
PIN ASSIGNMENTS
EM91710A
C2 C3 C4 C1 OSCI OSCO XMUTE V SS 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 R3 R2 R1 R4 TONE PO HKS V DD C2 C3 C4 C1 OSCI OSCO XMUTE VSS HFI
EM91710B
This specification are subject to be changed without notice.
EM91710A / B
TONE / PULSE SWITCHABLE DIALER
KEYBOARD ASSIGNMENT C1 1 4 7 or / T C2 2 5 8 0 C3 3 6 9 # C4 PT F P RD 1). PT 2). F 3). RD 4). P 5). / T : In pulse mode, execute PT function. : Flash key. : Redial key. : Pause key. : In pulse mode, execte PT function In tone mode, execte "" key.
FUNCTIONAL BLOCK DIAGRAM
XMUTE HFO V DD
COLUMN INTERFACE CKT.
OUTPUT INTERFACE CKT. PULSE GENERATOR PO
COL2 COL3 COL4
KERNEL CONTROL CKT.
DECODER & DATA LATCH LNB MEMORY
OSCI OSCO
DIVIDER
ROW / COLUMN PROGRAMMING COUNTER
ROW1 ROW2 ROW3 ROW4
ROW INTERFACE CKT.
D / A CONVERTER INPUT INTERFACE CKT.
DIALING SIGNAL OPTION :
a:Flash time: Row3 Row4 flash time(ms)
NR NR R R NR R NR R 600 300 100 80 UR UR NR R PULSE PULSE 10PPS 10PPS 40:60 33:66 b).
Row1 Row2 MODE PULSE RATE
R R NR NR NR R NR R TONE TONE PULSE PULSE 20PPS 20PPS
c:Tone function: Col1
Tone Duration
inter-Tone Pause
d:Key type select Col2 or / T select
Note: NR:no resistance. R : A resistance connect to Vss (820K typically) UR: A resistance connect to VDD
This specification are subject to be changed without notice.
EM91710A / B
TONE / PULES SWITCHABLE DIALER
PIN DESCRIPTION
Figure 1a : Single contact form keyboard configuration Row Column Figure 1b : Dual contact form keyboard configuration Row Column
Figure 1c : Electronic signal input keyboard configuration OSCI OSCO Oscillator input & Oscillator output pins. The 3.579545 MHz oscillator is formed by a built-in inverter inside of this chip and by connecting a 3.579545 MHz crystal or a ceramic resonator across the OSCI and OSCO pins. (built-in feedback resistor and capacitor) When HKS is "low", a valid key-in may turn on this oscillator and generates a 3.579545 MHz clock. Mute output pins. NMOS open drain output structure. The output is in "low" state during dialing sequence (both Pulse and Tone mode) otherwise this pin is "high-impedance" . Long (continue) Mute. Negative power supply pin. Positive power supply pin. Hook switch input pin. When the handset is in ON-HOOK state, this pin must be pulled "high" in order to disable the dialing operation and decrease the power consumption. When in OFF-HOOK state, the HKS pin must be pulled "low" state for all function operation. Pulse output signal pin. NMOS open drain output structure. The output is "low" during pulse dialing and Flash operation, otherwise this output is "floating".
XMUTE
VSS VDD HKS
This specification are subject to be changed without notice.
EM91710A / B
TONE / PULSE SWITCHABLE DIALER
Symbol TONE
FUNCTION DESCRIPTION
Keyboard Operation Symbol definitions: a). b). c). D1...Dn d). DP1.. DPn e). Dt1..Dtn f). tF g). tP h). tPT i). tFP j). t RP k). LNB : OFF-HOOK or enable Hand Free function. : ON-HOOK or disable Hand Free function. : Digit key 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, , # (C1...Cn is same as D1...Dn ). : Pulse digit 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, (CP1.. CPn is same as DP1.. DPn). : Tone digit 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, , # (Ct1..Ctn is same as Dt1..Dtn). : Flash time. : Pause time. : Pulse to Tone wait time. : Pause time for flash. : Pause time for redial. : Last number redial buffer.
A. Normal Dialing 1. Digit Dialing Procedure : D1, D2 . . . . . ., Dn Dial out : Dt1, Dt2 . . . . . . ., Dtn in tone mode Dial out : Dp1, Dp2 . . . . . ., Dpn in pulse mode LNB : D1, D2 . . . . . . Dn
This specification are subject to be changed without notice.
EM91710A / B
TONE / PULES SWITCHABLE DIALER
2. Dialing with flash key Procedure : F, D1, D2 . . . . . ., Dn Dial out : tF, Dt1, Dt1 . . . . . . ., Dtn in tone mode Dial out : tF, Dp1, Dp1 . . . . . . ., Dpn in pulse mode LNB : D1, D2 . . . . . . . Dn 3. Dialing with PT key Procedure : D1, D2 . . . . . ., PT, . . . . . , Dn Dial out : Dp1, Dp2, . . . . tPT, . . . . . , Dtn in pulse mode LNB : D1, D2 . . . . . , PT, . . . . Dn Note : If key in digit over maximum digit stored in LNB, then RD is inhibited even after on / off hook. B. Mixed dialing Procedure : D1, D2 . . . . . ., PT, D9, D10, . . . . . , Dn Dial out : Dp1, Dp2, . . . . tPT, Dt9, Dt10 . . . . . , Dtn LNB : D1, D2 . . . . . , PT, D9, D10 . . . . Dn C. Redial LNB : D1, D2 . . . . . Dn Procedure : RD Dial out : Dt1, Dt2, . . . . Dtn in tone mode Dial out : Dp1, Dp2, . . . . Dpn in pulse mode Note : If key in digit over maximum digit stored in LNB, then RD is inhibited. D. Pause Function Procedure Dial out Dial out LNB : D1, D2, . . . .Dn, P, C1 . . . . .Cn : Dt1, Dt2, . . . . Dtn , tp, Ct1 . . . . . . . . . Ctn in tone mode : Dp1, Dp2, . . . . Dpn, tp, Cp1 . . . . . . . . .Cpn in pulse mode : D1, D2 . . . . . Dn, P, C1, C2 . . . . . . . . . .Cn
E. Flash Function 1. Reset Procedure Dial out Dial out LNB : D1, D2, . . . .Dn, F, C1 . . . . .Cn : Dt1, Dt2, . . . . Dtn , tF, Ct1 . . . . . . . . . Ctn in tone mode : Dp1, Dp2, . . . . Dpn, tF, Cp1 . . . . . . . . .Cpn in pulse mode : C1, C2 . . . . . Cn
This specification are subject to be changed without notice.
EM91710A / B
TONE / PULSE SWITCHABLE DIALER
Operating flow chart of Handfree
ON HKS INITIAL (0)
OFF HF HF ON
ON HKS HF LINE(1)
OFF HKS LINE (2)
OFF HKS HF LINE (3)
STATE NO. (0) INITIAL STATE (1) ON HKS HF LINE (2) OFF HKS LINE (3) OFF HKS HF LINE
Note : ON : ON HKS OFF : OFF HKS HF : Pressed HF key
F : Floating (Hi-impedance)
This specification are subject to be changed without notice.
EM91710A / B
TONE / PULES SWITCHABLE DIALER
TEST CIRCUIT
Operation current
Standby current
V KEY BOARD
MODE V
COUNTER AND AC METER TONE 10K
Tone output voltage
V+ SPECTRUM ANALYZER
TONE V DD
Tone distortion
KEYBOARD ENTRY
KEYBOARD VSS
ENTRY
(V1)2+(V2)2+.+(Vn)2 (VL)2+(VH)2
a. V1..Vn are extraneous frequencies (ie, inter modulation and harmonic) components in the 500Hz to 3400Hz band. b. VL, VH are the individual frequency components of the DTMF signal c. Whether keyboard is pushed refer to the TONE mode time diagram 6
Pulse output sink current(
V+ open drain structure) VDD
Flash Key HKS
Keypad input
VDD ROW HKS VSS MODE
VDD Column A HKS VSS
This specification are subject to be changed without notice.
EM91710A / B
TONE / PULSE SWITCHABLE DIALER
ABSOLUTE MAXIMUM RATINGS (Ambient Temperature is 25°C, All voltage referenced to VSS. )
Parameter Power Supply Voltage Input Voltage Range Operating Temperature Storage Temperate Power Dissipation Sym. VDD VIN TOPR TSTO PD Ratings 6.0 -0.3 ~ VDD + 0.3 0 ~ 50 -55 ~125 500 Unit V V °C °C mw
Parameter Operating Voltage
Sym. VDD
Min. 2.5 2.0 1.0 VSS 0.7VDD
Typ. 0.6 0.2 0.1 0.1 0.5 10 400 20 200 -
Max. 5.5 5.5 5.5 2 0.5 1 0.2 0.3VDD VDD 1 0.1 30 800 -
Operating Current Standby Current Memory retention current Control pin input voltage XMUTE pin leakage current sink current HKS pin input current Keyboard scanning pin drive current sink current Key-in debounce time HFI pin input resistor HFO pin drive current sink current
Iop Is Imr Vil Vih Imth Imtl Ihks Ikbd Ikbs t DB Rhfi
Vn : Input voltage of any keyboard scanning pin (Row group, Column group).
This specification are subject to be changed without notice.
EM91710A / B
TONE / PULES SWITCHABLE DIALER
Parameter Pulse output pin, SDO pin leakage current sink current Pulse rate Make / Break ratio Pre-digit Pause Inter-digit Pause
Sym. Ipoh Ipol fpr TM:TB tPDP tIDP
Min. 0.5 -
Typ. 10 20 40:60 33:66 40 33 800 500
Max. 0.1 -
Parameter TONE output pin DC level sink current AC level Load resistor DTMF signal: pre-emphasis distortion Minimum tone duration Minimum intertone pause
Sym. Vdc Itl Vdtmf Rl twist Dist. tTD tITP
Max. 0.7VDD 170 3 -23 -
Unit V mA mVrms K dB dB ms ms
0.5VDD 0.2 130 155 10 1
OUTPUT (Hz) 699 766 848 948 1216 1332 1472
EM91710A / B
TONE / PULSE SWITCHABLE DIALER
HKS KEY IN
t XMUTE
PO TONE
- - - - - - High impedance NORMAL DIALING
Figure 2: Tone Mode Timing Diagram
HKS KEY IN
t DB XMUTE
PO TONE OSCO
- - - - - - High impedance NORMAL DIALING
Figure 3: Pulse Mode Timing Diagram This specification are subject to be changed without notice.
EM91710A / B
TONE / PULES SWITCHABLE DIALER
KEY IN t DB XMUTE
PO TONE
Tpt t ITP
- - - - - - High impedance
Figure 4: Timing Waveform for mixed dialing Operation (by PT key entry)
HKS KEY IN
XMUTE
TONE OSCO
- - - - - - High impedance AUTO DIALING
Figure 5: Tone Mode Redial Timing Diagram This specification are subject to be changed without notice.
EM91710A / B
TONE / PULSE SWITCHABLE DIALER
HKS KEY IN XMUTE XMUTE
PO TONE OSCO
- - - - - - High impedance Figure 6: Pulse Mode Redial Timing Diagram
PULSE MODE: XMUTE
PO TONE OSCO TONE MODE: XMUTE PO TONE OSCO
- - - - - - High impedance
Figure 7: Pause key operating timing This specification are subject to be changed without notice.
EM91710A / B
TONE / PULES SWITCHABLE DIALER
XMUTE PO
TONE OSCO
- - - - - - High impedance Figure 8: Flash key operation timimg
This specification are subject to be changed without notice.
EM91710A Application Example
IN40044 22M 100K HOOK SW ON MPSA92 OFF IN4148 240K 330K ZNR 120V 2K2 2K7 MPSA42 IN4148 100µ / 16V Z.D. 5V1 IN4148
APPLICATION CIRCUIT
This specification are subject to be changed without notice.
100K .1µ 470K C945 11 9 100µ 16V
1µ 100K 10
HKS TONE
12 2 WIRE TO 4 WIRE SPEECH NETWORK
EM91710A
XMUTE
R4 OSCI OSCO
TO HANDSEET
3.579545MHz 820k6
TONE / PULSE SWITCHABLE DIALER
TONE 20PPS 10PPS
EM91710A / B
EM91710B Application Example
22M IN4148
IN40044 100K HOOK ON MPSA92 ZNR 120V
APPLICATION CIRCUIT
0.1µF 240K C945 C945 + .1µ .02µ 5V1 200 + 100K 1µ 100µ 16V 470K 200K 2K2 2K7 IN4148
3K3 HKS 47K C945 PO
20PPS
10PPS
This specification are subject to be changed without notice.
11 14 V TONE DD 13 100K
HF KEY .1µ
47K HFO 5
OSCI 3.579545 MHz
EM91710B
7 XMUTE 10 HFO
2 TO 4 WIRE SPEECH NETWORK & AUDIO AMPLIFIER
TONE / PULES SWITCHABLE DIALER
820K6
EM91710A / B
TONE / PULSE SWITCHABLE DIALER
PACKAGE INFORMATION
Example : EM (1) 91710 P (2) (3) (1) ELAN MICRO. pefix (2) Type number (3) Package code: PPDIP KSkinny RSDIP 16 Lead Plastic Package
16 PDIP
DIM A A1 B B1 C D E E1 e eB L MILIMETERS MIN. MAX. 5.334 0.381 0.356 0.558 1.150 1.778 0.204 0.381 19.05 20.07 7.620 8.255 6.096 7.112 2.286 2.794 10.92 2.921 4.064 INCHES MIN. MAX. .210 .015 .014 .022 .045 .070 .008 .015 .750 .790 .300 .325 .240 .280 .090 .110 .430 .115 .160
This specification are subject to be changed without notice.
EM91710A / B
TONE / PULES SWITCHABLE DIALER
18 / 20 / 28 Lead Plastic Package
18 PDIP
DIM A A1 B B1 C D E E1 e eB L MILIMETERS MIN. MAX. 5.334 0.381 0.356 0.558 1.150 1.778 0.204 0.381 22.35 23.37 7.620 8.255 6.096 7.112 2.286 2.794 10.92 2.921 4.064
20 PDIP
INCHES MILIMETERS INCHES MIN. MAX. DIM MIN. MAX. MIN. MAX. .210 A 5.334 .210 .015 A1 0.381 .015 .014 .022 B 0.356 0.558 .014 .022 .045 .070 B1 1.150 1.778 .045 .070 .008 .015 C 0.204 0.381 .008 .015 .880 .920 D 25.40 26.67 1.000 1.050 .300 .325 E 7.620 8.255 .300 .325 .240 .280 E1 6.096 7.112 .240 .280 .090 .110 e 2.286 2.794 .090 .110 .430 eB 10.92 .430 .115 .160 L 2.921 4.064 .115 .160 MILIMETERS DIM MIN. MAX. A 6.350 A1 0.381 B 0.356 0.558 B1 1.016 1.778 C 0.204 0.381 D 35.56 37.85 E 15.24 15.88 E1 13.21 14.73 e 2.286 2.794 eB 17.78 L 2.921 5.080
28 PDIP
INCHES MIN. MAX. .250 .015 .014 .022 .040 .070 .008 .015 1.400 1.490 .600 .625 .520 .580 .090 .110 .700 .115 .200
This specification are subject to be changed without notice.
EM91710A / B
TONE / PULSE SWITCHABLE DIALER
22 / 24 Lead Plastic Package-Skinny
22 PDIP (skinny)
DIM A A1 B B1 C D E E1 e eB L MILIMETERS MIN. MAX. 4.752 0.381 0.356 0.558 1.27 1.778 0.204 3.556 25.90 26.67 7.620 8.255 6.223 6.604 2.286 2.794 8.382 10.16 2.921 4.064 INCHES MIN. MAX. .180 .015 .014 .022 .050 .070 .008 .014 1.02 1.05 .300 .325 .245 .260 .090 .110 .330 .400 .115 .160 DIM A A1 B B1 C D E E1 e eB L
24 PDIP (skinny)
MILIMETERS MIN. MAX. 4.572 0.381 0.356 0.558 1.27 1.778 0.204 0.381 31.24 32.26 7.620 8.255 6.223 6.731 2.286 2.794 8.636 9.652 2.921 4.064 INCHES MIN. MAX. .180 .015 .014 .022 .050 .070 .008 .015 1.23 1.270 .300 .325 .245 .265 .090 .110 .340 .380 .115 .160
This specification are subject to be changed without notice.
EM91710A / B
TONE / PULES SWITCHABLE DIALER
42 SDIP Package
42 SDIP
DIM A A1 A2 B B1 C D E1 e eB D1 L MILIMETERS MIN. MAX. 5.08 0.381 3.937 4.191 0.356 0.559 0.914 1.116 0.204 0.304 36.70 37.34 13.84 14.10 1.727 1.829 15.24 17.78 0 0.127 2.921 3.429 INCHES MIN. MAX. 0.200 0.015 0.155 0.165 0.014 0.022 0.036 0.044 0.008 0.012 1.445 1.470 0.545 0.555 0.068 0.072 0.600 0.70 0 0.005 0.115 0.135
This specification are subject to be changed without notice.