EM91401 SERIES
TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
AND DUAL-TONE MELODY GENERATOR
FUNCTION DESCRIPTIONS
Dialing signal selection
The EM91401 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
R-Vdd
NR
b. M/B ratio
ROW2
NR
Mode
20 PPS
Tone
MBR (%)
40:60
R-Vss
33:66
R-Vss
c. Flash time
ROW3
NR
10 PPS
d. Lock control method
ROW4
NR
Tf (ms)
600
COL1
R-Vdd
NR
Control method
key lock
none lock
NR
R-Vss
NR
100
R-Vss
R-Vss
80
R-Vss
password lock
R-Vss
300
e. Lock number
COL2
NR
COL3
Lock number
NR
R-Vss
NR
none
0
NR
R-Vss
R-Vss
9
R-Vss
0.9
Normal dialing
Directly keying digital key on keyboard which number can be dialing output and stored in LNB memory
automatically. Operating procedure described as follow :
• To select Pulse or Tone mode.
• Off-hook or turn on HF function.
• Keying d1, d2, .. , dn. The “d” expressed digital keypad that included 1~9, *, 0, #, P, and P→T keys. The “n”
expressed unlimited.
• The numbers d1, d2, .. , dn will be dialed out in Pulse or Tone mode as selection.
LNB redial memory
Storing:
In normal dialing mode, every digital key was entry which number will be stored in LNB memory
automatically. If entry digits are more than 32 digits, the redial function of LNB memory will be disabled.
Otherwise, these numbers stored in LNB memory can be redial output.
* This specification are subject to be changed without notice.
10.1.1997
5
ELAN [ ELAN MICROELECTRONICS CORP ]
