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參數(shù)資料
| 型號(hào)： | AG1170-S5 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | +5V / +3.3V Low Power Ringing SLIC |
| 中文描述： | 5V的/ 3.3V的低功率振鈴用戶接口 |
| 文件頁(yè)數(shù)： | 7/15頁(yè) |
| 文件大小： | 362K |
| 代理商： | AG1170-S5 |
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V1.9 September 2006
Data Sheet
Ag1170
+5V / +3.3V LOW POWER RINGING SLIC
3.3 Network Balance Impedance.
The network balance impedance ZB of the Ag1170 is
set to 600R and it requires no external programming
resistors.
To programme the ZB for the Ag1170P components
are connected from the V
IN
pin to the ZB pin. For ZB =
ZT use a 100K resistor in series with a 47nF capacitor.
Further details on the programming of the Ag1170P are
contained within Applications Note: AN1170-1.
3.4 Tip & Ring Polarity Reversal.
The Ag1170 can reverse the battery voltage polarity at
Tip and Ring via the F/R pin.
If F/R is held at logic 1 (forward) the d.c. voltage at Tip
is positive with respect to Ring. If F/R is taken to logic
0 the voltage polarity is reversed.
3.5 On Hook Transmission.
The Ag1170 is capable of on-hook transmission. This
means analog signals can be transmitted from VIN
through Tip and Ring and onto the line even when no
loop current is flowing. This can be used when
sending Caller Line Identification (CLI) information or
for other “no ring” calls.
The Ag1170 will provide on hook transmission with a
high impedance on Tip/Ring or with AC loads down to
600R.
Condition 1 - DC operation
Signal
Notes
INPUT RM
1
0
No ringing
OUTPUT SHK
1
0
Off hook detected
Off Hook
10ms
Condition 2 - Ringing On-hook
RM
1
0
(input)
1
0
SHK
1
0
Condition 3 - Ringing/Off-hook
A
B
from F/R..
As long as the telephone is off hook, SHK will remain high.
1 sec
3 sec
1 sec
3 sec
BE DE-BOUNCED FOR
F/R
(point B), and the ringing cadence should be removed
NOTE: SHK SHOULD
The phone goes off hook, and SHK is detected at point A
(leading edge). RM must be switched low in <500ms
Figure 4: Ringing Signal Waveforms
Silver Telecom 2006
7
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