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參數(shù)資料
| 型號(hào)： | L8560 |
| 廠商： | Lineage Power |
| 英文描述： | Low-Power SLIC（electronic subscriber loop interface circuits ） with Ringing(帶振鈴的低功耗用戶線接口（SLIC）) |
| 中文描述： | 低功耗用戶接口（電子用戶環(huán)路接口電路）與振鈴（帶振鈴的低功耗用戶線接口電路（SLIC）） |
| 文件頁(yè)數(shù)： | 31/46頁(yè) |
| 文件大?。?/td> | 1060K |
| 代理商： | L8560 |
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Lucent Technologies Inc.
31
Data Sheet
April 2000
L8560 Low-Power SLIC with Ringing
Applications
(continued)
Power Ringing
(continued)
Reference Designs for ISDN TA Applications
A POTS circuit for reference design is shown in Figure 33. In Figure 33, the L8560 SLIC and T8503 codec are
used. The ac circuit is designed per Bellcore TA-909 with a 600
resistive termination and hybrid circuit, with
the transmit gain set for –2 dB and the receive gain set for –4 dB. The T8503 codec is compatible with the T7237
U-interface transceiver and the T7256 SCNT1 interface.
12-3345.R (F)
* R
1
= 133 k
for L8560C.
Required only for L8560A/C versions.
Notes:
T
X
= –2 dB.
R
X
= –4 dB.
Termination = 600
.
Hybrid balance = 600
.
Figure 33. POTS Interface with Balanced Ringing Using L8560 SLIC and T8503 Codec
GSX
VFROP
DX
DR
FSX
FSR
MCLK
SYNC
AND
CLOCK
TIP
R
PT
30
RING
PT
B
B
B
A
VITR
RCVP
TG
VTX
TX1
C
C
B2
0.1
μ
F
VFXIN
C
0.47
μ
F
C
PR
B0
B1
B2
FGND
16
V
BAT
CONTROL
INPUTS
R
(RTS2)*
210 k
R
8.25 k
C
2
DGND
AGND
V
DD
1
2
4
6, 7
PCM
R
2
R
(RTSP)
351 k
C
4.7 nF
C
BS
C
BAT2
0.1
F
C
BAT1
0.1
μ
F
F
V
C
V
B
V
B
BR
R
PR
30
R
3
R
DGND
CV
DD
0.1
μ
F
RCVN
C
ST
0.1
μ
F
C
27 pF
R
ST
100
(RTS3)
562 k
(RTSN)
0.1
μ
F
(RTSN)
124 k
C
4
(CRTSP)
0.1
μ
F
SUPERVISION
OUTPUT
R
N
I
R
R
L
DCOUT
I
PROG
R
14 k
L7591
0.22
μ
F
C
4.7 nF
C
F2
0.1
μ
F
F
4.32 k
R
30.1 k
R
41.2 k
R
1.21 k
C
220 pF
R
178 k
C
C2
0.1
μ
F
C
C1
0.1
μ
F
R
60.4 k
R
143 k
HIGHWAY
1/2 T8503
CODEC
C
CC
0.1
μ
F
R
X
71.5 k
R
T3
165 k
L8560A, D, E, F, G
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