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參數(shù)資料
| 型號： | U3762MB-MFNG3 |
| 英文描述： | Universal Telephone IC - All Functions Integrated |
| 中文描述： | 通用電話芯片-所有的功能集成 |
| 文件頁數(shù)： | 15/23頁 |
| 文件大小： | 248K |
| 代理商： | U3762MB-MFNG3 |
U3762MB
Preliminary Information
Rev. A1, 15-Sep-98
15 (23)
Flash (F)
ááááááááá
ááááááááá
1. The dialer will execute flash break and the entire flash pause time will elapse before the next digits are dialed out.
ááááááááá
2. The flash key can be stored as a digit in the memory. Only one flash, however, will be released to the users.
3. The system will return to the initial state after the flash pause time has elapsed.
F
t
KID
Oscillation
HKS
KEY IN
MUTE
MASK
OSC
MFO
t
FP
3
F
t
FP
t
FB
15027
t
ITP
High
DP
Figure 10. Flash operation
t
KID
t
KRD
= key release debounce
t
PDP
= pre-digit pause
t
IDP
= inter-digit pause
t
TD
= DTMF output duration
= key active in debounce
t
ITP
t
FB
t
FP
t
P
= intertone pause
= flash break time
= flash pause time
= pause time
15028
KEY IN
DP
MUTE
MASK
EARTH
Low
Figure 11. Symbolic timing diagram: Earth function
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