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| 型號： | U3762MB |
| 英文描述： | Stellaris Programming Services |
| 中文描述： | 通用電話芯片-所有的功能集成 |
| 文件頁數(shù)： | 14/23頁 |
| 文件大?。?/td> | 248K |
| 代理商： | U3762MB |
U3762MB
Rev. A1, 15-Sep-98
Preliminary Information
14 (23)
Pulse-to-Tone (
/T)
áááááááááááááááááááááááááááá
ááááááááááá
áááááááá
,
D1
áááááááááááá
áááá
,
D2
ááá
ááááá
, ...,
ááááááááááááááá
ááááááááá
D1’
áááááááá
áááááááá
D2’
á
á
OFF HOOK
Dn
,
/T
,
,
, ...,
Dn’
D1, D2, ..., Dn, Pause (3.6 s), D1’, D2’ ,..., Dn’
(Pulse)
(Tone)
1. b)
(Pulse),
(Tone),
(Tone)
if MODE pin = C2, * is sent out as DTMF tone
2.
If the mode switch is set to tone mode, then the output signal will be:
D1, D2, ..., Dn,
*
, D1’, D2’, ..., Dn’
(Tone) (Tone)
(Tone)
3.
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.
Oscillation
HKS
KEY IN
DP
MUTE
MASK
MFO
OSC
15026
t
KID
2
*/T
3
t
PDP
t
P
t
IDP
MFIND
Figure 9. Pulse-to-tone operation
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