u3762mb ETC-unknow, u3762mb Datasheet - Page 14

• Manufacturer Part Number: u3762mb
• Description: Universal Telephone Functions Integrated
• Manufacturer: ETC-unknow

Pulse-to-Tone (
1. a)
1. b)
2.
3.
U3762MB
14 (23)
KEY IN
OFF HOOK
MFIND
MASK
MUTE
MFO
HKS
OSC
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
by going on-hook only.
DP
(Pulse),
(Pulse)
,
(Tone),
:
(Tone)
/T)
D1
t
*
KID
t
PDP
,
, D1’, D2’, ..., Dn’
2
(Tone)
(Tone)
Preliminary Information
D2
t
IDP
(Tone)
Figure 9. Pulse-to-tone operation
*/T
, ...,
if MODE pin = C2, * is sent out as DTMF tone
Dn
3
,
Oscillation
t
:
P
/T
,
D1’
,
D2’
Rev. A1, 15-Sep-98
, ...,
15026
Dn’