參數(shù)資料
型號: LUCL9218AAR-DT
元件分類: 圓形連接器
英文描述: Circular Connector; MIL SPEC:MIL-C-5015; Body Material:Metal; Series:GT; No. of Contacts:3; Connector Shell Size:16; Connecting Termination:Solder; Circular Shell Style:Square Flange Receptacle; Body Style:Straight
中文描述: 低成本線接口
文件頁數(shù): 15/30頁
文件大?。?/td> 378K
代理商: LUCL9218AAR-DT
Agere Systems Inc.
15
Data Sheet
November 2001
L9218A/G Low-Cost Line Interface
Applications
A basic loop start reference circuit, using bused ringing with the L9218 SLIC and the T7504 first-generation codec,
is shown in Figure 11. This circuit is designed for a 200
+
680
||
0.1
μ
F complex termination impedance and
transhybrid. Transmit gain is set at 0 dBm and receive gain is set at –7 dBm.
Figure 11. Basic Loop Start Application Circuit Using T7504-Type Codec
Table 9 shows the design parameters of the application circuit shown in Figure 11. Components that are adjusted
to program these values are also shown.
Table 9. 200
+
680
||
0.1
μ
F First-Generation Codec Design Parameters
Design Parameter
Parameter Value
10 mA
20 mA
3.14 dBm
200
+
680
||
0.1
μ
F
200
+
680
||
0.1
μ
F
0 dBm
–7 dBm
Components Adjusted
R
LCTH
R
PROG
R
T1
, R
GP
, R
RCV,
R
GP1,
R
GS,
C
GS
R
HB1
R
T2
, R
X,
R
N1,
R
N2,
C
N
R
RCV
, R
GP
, R
T1
Loop Closure Threshold
dc Loop Current Limit
2-wire Signal Overload Level
ac Termination Impedance
Hybrid Balance Line Impedance
Transmit Gain
Receive Gain
2797 (F).a
R
PROG
35.7 k
R
LCTH
22.1 k
R
PT
50
L7591
R
PR
PT
18
1
7LCTH
8DCOUT
50
R
TSP
2.94 M
PR
10
RTSP
20
R
TS1
402
RTSN
19
R
3.32 M
V
RING
V
BAT
CF2
11
CF1
12
C
F1
0.47
μ
F
AGND
16
BGND
17
I
V
BAT
9
C
BAT
0.1
μ
F
RCVP
RCVN
5
6
27
R
30.1 k
R
T1
71.5 k
R
80.6 k
R
137.0 k
R
357 k
R
158.0 k
GSX
VF
R
O
DX
DR
FSX
FSR
MCLK
1/4 T7504
CODEC
PCM
HIGHWAY
CONTROL
AND
CLOCK
+
L9218
SLIC
C
RTS1
0.015
F
C
F2
0.1
μ
F
V
BAT
+2.4 V
C
B2
0.47
μ
F
22
SUPERVISION
OUTPUTS
B1
B0
14
15
CONTROL
INPUTS
C
0.1 nF
R
18.2 k
R
143.0 k
NSTAT
B2/NC
13
VITR
23
TXI
24
VTX
25
TG
26
C
B
0.1
μ
F
R
8.06 k
R
2.37 k
C
6.8 nF
TIP
RING
LCAS
EMR
C
B1
0.47
μ
F
V
CC
4
V
CC
C
CC
0.1
μ
F
TSD
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