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PDF EM91810B Data sheet ( Hoja de datos )
| Número de pieza | EM91810B | |
| Descripción | TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE | |
| Fabricantes | ELAN Microelectronics Corp | |
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EME9M198118010AA//BB
TONE/PULTSOENSEW/PUITLECSHSAWBITLCEHDABIALELEDRIALWEIRTWHITLHCDLCIDNITNETRERFFAACCEE
GENERAL DESCRIPTION
The EM91810A/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. EM91810A/B also provide SDO (serial data output) function to drive LCD driver (EM32100, EM32116,
EM32117) and voice synthesizer.
FEATURES
• Tone/pulse switchable dialer.
• One 32-digit last number redial memory.
• Pulse to tone (P→T) 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)
P→T 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 DIP20.
• SDO function that is supported to drive LCD driver (EM32100) and voice synthesizer to indicate dialing
number.
• Key tone function is provided.
PIN ASSIGNMENTS
EM91810A
C2
C3
C4
C1
OSCI
OSCO
XMUTE
VSS
SDO
1
2
3
4
5
6
7
8
9
18 R3
17 R2
16 R1
15 R4
14 TONE
13 PO
12 HKS
11 VDD
10 KT
EM91810B
C2
C3
C4
C1
OSCI
OSCO
XMUTE
V SS
HFI
SDO
1
2
3
4
5
6
7
8
9
10
20 R3
19 R2
18 R1
17 R4
16 TONE
15 PO
14 HKS
13 VDD
12 HFO
11 KT
* This specification are subject to be changed without notice.
10.1.1997 1
1 page  
EM91810A/B
TONE/PULES SWITCHABLE DIALER WITH LCD INTERFACE
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
2. Dialing with flash key
Procedure : ↑ F,D1,D2 . . . . . ., Dn↓
Dial out
Dial out
LNB
: tF, Dt1,Dt1 . . . . . . ., Dtn in tone mode
: tF,Dp1,Dp1 . . . . . . ., Dpn in pulse mode
: D1, D2 . . . . . . . Dn
3. Dialing with P→T key
Procedure : ↑ D1, D2 . . . . . .,P→T, . . . . . , Dn↓
Dial out : Dp1, Dp2, . . . . tPT, . . . . . , Dtn in pulse mode
LNB
: D1, D2 . . . . . ,P→T, . . . . 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 . . . . . .,P→T, D9,D10, . . . . . , Dn↓
Dial out : Dp1, Dp2, . . . . tPT, Dt9,Dt10 . . . . . , Dtn
LNB
: D1, D2 . . . . . ,P→T, 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 : ↑ D1, D2, . . . .Dn, P, C1 . . . . .Cn↓
Dial out : Dt1, Dt2, . . . . Dtn , tp, Ct1 . . . . . . . . . Ctn in tone mode
Dial out : Dp1, Dp2, . . . . Dpn,tp, Cp1 . . . . . . . . .Cpn in pulse mode
LNB
: D1, D2 . . . . . Dn, P, C1, C2 . . . . . . . . . .Cn
E. Flash Function
1. Reset
Procedure : ↑ D1, D2, . . . .Dn, F, C1 . . . . .Cn ↓
Dial out
Dial out
LNB
: 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.
10.1.1997 5
5 Page 
EM91810A/B
TONE/PULES SWITCHABLE DIALER WITH LCD INTERFACE
HKS
KEY IN
XMUTE
PO
TONE
32
t DB
P->T
tPDP tIDP
tIDP
3
Tpt
tITP
OSCO
SDO
- - - - - - High impedance
Figure 4: Timing Waveform for mixed dialing Operation (by P→T key entry)
HKS
KEY IN
XMUTE
1
t DB
2
RD
PO
TONE
OSCO
tITP
t ITP
t ITP
t D tITP
SDO
AUTO DIALING
- - - - - - High impedance
Figure 5: Tone Mode Redial Timing Diagram
* This specification are subject to be changed without notice.
10.1.1997 11
11 Page | ||
| Páginas | Total 18 Páginas | |
| PDF Descargar | [ Datasheet EM91810B.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| EM91810A | TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE | ELAN Microelectronics Corp |
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