EM91401CP

Manufacturer Part NumberEM91401CP
DescriptionTone/pulse switchable dialer with LCD interface and dual tone melody generator
ManufacturerELAN Microelectronics Corp
EM91401CP datasheet
 


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Page 16/23:

SDO operating timing

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HKS
KEY IN
KT
SDO
<Note>L=LSB,M=MSB, sT=START bit time, spT=STOP bit time
HKS
HF
KEY IN
HFO
HDO
XMUTE
SDO
PO
MELODY
@ : It can be triggled by extension telephone set for hold function release
HFI
HF
or
HKS
KEY
KT
Tdly
OSC.
* This specification are subject to be changed without notice.
TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
AND DUAL-TONE MELODY GENERATOR
2
Tdb
sT b0
b1 b2 b3 b4 b5 spT spT
sT
Tbit
0
0
1 0
1
L
Figure 8. SDO operating timing
HD
HD
HD
HF
Figure 9. HF and HD operating timing
5
0
"0" digit dialing time
Figure 10. Off-Hook delay time
EM91401 SERIES
0
0
0 0
1
M
Hi-impedance
HD
HD
HD @
HF
93
Thdrdb
ms
Hi-impedance
Hi-impedance
10.1.1997
16