參數(shù)資料
型號: L9218A
英文描述: CAP CER 330PF 3.15KVDC R3 RAD
中文描述: 低成本線接口
文件頁數(shù): 17/30頁
文件大小: 378K
代理商: L9218A
Agere Systems Inc.
17
Data Sheet
November 2001
L9218A/G Low-Cost Line Interface
Applications
(continued)
A basic loop start reference circuit, using bused ringing with the L9218 SLIC and the T8536 third-generation codec,
is shown in Figure 12.
* Optional nonfunctional connection for exact footprint match with L9219.
Figure 12. Basic Loop Start Application Circuit Using T8536-Type Codec
R
PROG
35.7 k
R
LCTH
22.1 k
R
PT
50
L7591
R
PR
PT
18
1
7
LCTH
8
DCOUT
50
R
TSP
2.94 M
PR
10
RTSP
20
R
TS1
510
RTSN
19
R
3.4 M
V
RING
V
BAT
CF2
11
CF1
12
C
F1
0.47
μ
F
AGND
16
BGND
17
L9218
SLIC
C
RTS1
0.015
F
C
F2
0.1
μ
F
RCVN
NSTAT
6
DR2
FS
BCLK
1/4 T8536
CODEC
PCM
HIGHWAY
CONTROL
AND
CLOCK
B0
B1
15
14
RCVP
5
VF
R
ON
VF
X
I
VF
R
OP
SLIC0a
SLIC3a
SLIC2a
DGND
DX1
DX2
DR1
C
VDD
0.1
μ
F
V
DD
B2/NC
13 (OPTIONAL*)
SLIC4a
22
VITR
23
TIP
RING
LCAS
EMR
V
BAT
9
C
BAT
0.1
μ
F
V
BAT
TXI
24
VTX
25
TG
26
C
B
0.1
μ
F
R
8.06 k
C
B1
0.1
μ
F
I
PROG
V
CC
4
C
CC
0.1
μ
F
V
CC
R
20 M
2798 (F).a
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