EM91450A EMC [ELAN Microelectronics Corp], EM91450A Datasheet - Page 16

• Manufacturer Part Number: EM91450A
• Description: TONE/PULSE DIALER WITH LCD INTERFACE AND I.P.P. DETECT FUNCTION
• Manufacturer: EMC [ELAN Microelectronics Corp]

<Note>L=Least significant bit,M=Most significant bit, SB=START bit , SPT=STOP bit
@ : It can be triggled by extension telephone set for hold function release
* This specification are subject to be changed without notice.
MELODY
XMUTE
KEY IN
HDO
HKS
KEY IN
HFO
SDO
OSC.
SDO
PO
HKS
KEY
HFI
HKS
SDO
KT
or
KT
HF
HF
HD
Tdly
5
Figure 8. SDO operating timing
HF
Figure 9. HF and HD operating timing
Tdb
Figure 10. Off-Hook delay time
HD
SB
0
0
SB
"0" digit dialing time
0
1 0
b0
L
HD
b1 b2 b3 b4 b5 SPB SPB
1
Tbit
2
0
TONE/PULSE DIALER WITH LCD INTERFACE
0
0 0
HD
M
0
HF
1
AND I.P.P. DETECT FUNCTION
HD
Hi-impedance
Hi-impedance
Hi-impedance
HD @
ms
93
EM91450 SERIES
Thdrdb
2.10.1999
16