参数资料
型号: LXT332QE
英文描述: Line Interface
中文描述: 线路接口
文件页数: 23/32页
文件大小: 395K
代理商: LXT332QE
Dual T1/E1 Line Interface Unit
LXT331
Datasheet
23
Figure 12. Typical LXT331 T1 Application (Host Control Mode, Bipolar I/O)
1.544 MHz
Clock Soure
D
+5V
LXT331
MCLK
TRSTE
TCLK0
PMRK0
TNEG0
NMRK0
TPOS0
TPOS1
TCLK1
TNEG1
PMRK1
NMRK1
DPM1
DFM1
DPM0
DFM0
TTIP0
TRING0
RTIP0
RRING0
VCC
GND
1:1
Rt
100
0.1
μ
F
RTIP1
RRING1
TTIP1
TRING1
MRING0
MTIP0
MRING1
MTIP1
1
μ
F
T
T
T
T
S
S
C
S
P
To/From
μ
P / Controller
+5 V
+5 V
68
μ
F
68
μ
F
I
I
1:n
470 pF
Rt
See
INSET
for
circuit
INSET
VCC
D4
D3
VCC
D2
D1
TTIPx
TRINGx
1
1
2
1k
1k
1:1
100
1k
1k
1:n
470 pF
Rt
See
INSET
for
circuit
Rt
2
1
1
2
Refer to Table 6 for transformer specifications.
NOTES:
Typical Value. Adjust capacitor value for board parasitics to obtain
optimum return loss.
1
1. Transformer turns ratio accuracy is ± 2%.
2. Refer to Table 7 for Rt values.
3. Typical return loss, 51 kHz - 3.072 MHz band.
4. D1, D2, D3 & D4 are protection diodes (Schottky) International Rectifier: 11DQ04 or 10BQ060;
Motorola: MBR0540T1.
S
P
Normal
High-Z
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