參數(shù)資料
型號： L9216A
英文描述： CAP CER 270PF 3.15KVDC R3 RAD
中文描述： 短環(huán)振鈴用戶接口與地面開始
文件頁數(shù)： 42/48頁
文件大?。?/td> 1062K
代理商： L9216A
Preliminary Data Sheet
September 2001
Short-Loop Ringing SLIC with Ground Start
L9216A/G
42
Agere Systems Inc.
ac Applications
(continued)
Design Examples
(continued)
Third-Generation Codec ac Interface Network—Complex Termination
The following reference circuit, Figure 27, shows the complete SLIC schematic for interface to the Agere T8536
third-generation codec. All ac parameters are programmed by the T8536. Note this codec differentiates itself in that
no external components are required in the ac interface to provide a dc termination impedance or for stability. For
illustration purposes, 0.5 Vrms PPM injection was assumed in this example and no meter pulse rejection is used.
Also, this example illustrates the device using programmable overhead and current limit. Please see the T8535/6
data sheet for information on coefficient programming.
Figure 27. Third-Generation Codec ac Interface Network; Complex Termination
V
BAT1
BGND
V
BAT2
V
CC
AGND
ICM
RGDET
ground key
not used
C
BAT1
0.1
μ
F
C
BAT2
0.1
μ
F
C
CC
0.1
μ
F
RTFLT
DCOUT
PR
PT
V
PROG
V
REF
C
RT
0.1
μ
F
R
RT
383
k
AGERE
L7591
50
V
BAT1
FUSIBLE OR PTC
50
CF1
CF2
rate of battery
reversal not
ramped
FB1
FB2
NSTAT B2
B1
B0
C
F1
0.22
μ
F
C
F2
0.1
μ
F
RING
IN
VITR
RCVP
RCVN
ITR
VTX
TXI
R
4750
V
BAT1
D
BAT1
V
BAT2
V
CC
C
TX
0.1
μ
F
C
0.47
μ
F
C
C1
0.1
μ
F
PCM
HIGHWAY
DX0
DR0
DX1
DR1
FS
BCLK
DGND
V
DD
SYNC
AND
CLOCK
V
DD
VFXI
VFROP
VFRON
SLIC4a
SLIC3a
SLIC2a
SLIC0a
L9216G
FROM/TO
CONTROL
B2
B1
NSTAT
B0
FUSIBLE OR PTC
R
CIN
20 M
1/4
T8536/8
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