U3761MB-AFNG3 TEMIC [TEMIC Semiconductors], U3761MB-AFNG3 Datasheet - Page 15

• Manufacturer Part Number: U3761MB-AFNG3
• Description: Low Voltage Standard Telephone Circuit with 13 Memories
• Manufacturer: TEMIC [TEMIC Semiconductors]

TELEFUNKEN Semiconductors
Rev. A2, 23-Apr-97
Pulse-to-Tone (
1.
2.
3.
Earth
The Earth pin will go high 400 ms and the pause time of 1 s will be added when the Earth key is pressed. It can be stored
as a digit in Memory and has not the first priority.
OFF HOOK
T/P MUTE
If the mode switch is set to pulse mode, then the output signal will be:
D1, D2, ..., Dn, Pause (3.6 s), D1’, D2’ ,..., Dn’
If the mode switch is set to tone mode, then the output signal will be:
D1, D2, ..., Dn,
(Tone)
The dialer remains in tone mode when the digits have been dialed out and can be reset to pulse mode
only by going on-hook.
KEY IN
MASK
DTMF
HKS
OSC
(Pulse)
DP
,
:
(Tone)
/T)
D1
*
t
KID
t
PDP
,
M
, D1’, D2’, ..., Dn’
(Tone)
Preliminary Information
D2
2
B
t
(Tone)
IDP
Figure 9. Pulse-to-tone operation
, ...,
*/T
Dn
Oscillation
,
3
:
t
P
/T
,
D1’
,
U3761MB
D2’
, ...,
13409
15 (23)
Dn’