u3760mb-n ATMEL Corporation, u3760mb-n Datasheet - Page 12

• Manufacturer Part Number: u3760mb-n
• Description: Low-voltage Standard Telephone Circuit
• Manufacturer: ATMEL Corporation

Pulse-to-Tone (
1.
2.
3.
U3760MB-N
12 (20)
OFF HOOK
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.
(Pulse)
KEY IN
MUTE
MFO
HKS
OSC
KT
DP
,
:
(Tone)
/T)
D1
*
4
,
t
KID
t
PDP
, D1’, D2’, ..., Dn’
(Tone)
Preliminary Information
2
D2
(Tone)
*/T
Figure 6. Pulse-to-tone operation
t
, ...,
IDP
8
Dn
t
B
t
M
Oscillation
t
,
IDP
:
/T
t
P
,
D1’
,
D2’
Rev. A1, 31-May-99
10630
, ...,
Dn’