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參數(shù)資料
| 型號： | STLC3065 |
| 廠商： | 意法半導體 |
| 英文描述： | WLL SUBSCRIBER LINE INTERFACE CIRCUIT |
| 中文描述： | 環(huán)路用戶線路接口電路 |
| 文件頁數(shù)： | 25/27頁 |
| 文件大?。?/td> | 194K |
| 代理商： | STLC3065 |
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APPENDIX C
Power Down,
Power Down
HI-ZFeeding,
HI-ZFeeding
HI-Z Feeding,
Power Down
Power Down,
HI-Z Feeding
Line 1 State,
Line 2 State
Act Off Hook,
Ic Feeding
Ic Feeding,
Act OffHook
Ringing,
Ringing
Ringing,
Ic Feeding
Ic Feeding,
Ringing
Ic Feeding,
Act On Hook
Act On Hook,
Ic Feeding
Act On Hook,
Act On Hook
SW
routine
(*)
P1=1
P2=0
P1=P2=1
P1=0, P2=1
Tj>Tth
Ring Burst
Line 1,
D2=0/1
Ring Burst
Line2,
D2=0/1
D0=D1=P1=P2=0
Line1Off Hook
Line1,
Off Hook
Line1On Hook,
P1=1, P2=0
Line2Off Hook
Line2Off Hook
Line2On Hook
P1=P2=1
P1=P2=1
Ring Burst
Line1 and 2,
D2=0/1
Line1
On Hook,
Ring Pause
Ring Pause
Ring Pause
Ring Burst
Ring Burst
Ring Burst
Ring Trip
Detection
Line1
Ring Trip
Detection
Line 2
Line2On Hook,
P1=0, P2=1
Line1Off Hook
Line1OffHook
Line2Off Hook
Line2Off Hook
Off Hook
Detection
Ring Trip
Detection
Figure C1. Typical statediagram for the STLC3065operation
Note: all state transitions are under the microprocessor control.
(*) = When the ringing signal is sent to both lines, the STLC3065is not able to detectthe answering line. To detect the answering line, a SW
routineis needed that disables firstthe line 1 (forcing P1=0) and then the line2 ( forcing P2=0)so as to detect which line is inOff Hook
condition.
The On Hook condition is declared when it persists for T>Tref.
Ic Feeding state is referred to a constant feeding current appliedto the local loop and equal to 300
μ
A.
STLC3065
25/27
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