參數(shù)資料
型號(hào): T7256A
英文描述: Compliance with the New ETSI PSD Requirement
中文描述: 符合新的ETSI PSD的要求
文件頁數(shù): 98/116頁
文件大小: 1056K
代理商: T7256A
Data Sheet
January 1998
T7256 Single-Chip NT1 (SCNT1) Transceiver
94
Lucent Technologies Inc.
Questions and Answers
(continued)
S/T-Interface
(continued)
A36:
(continued)
5-4721
Figure 34. T7256 S/T Line Interface Scheme
5-4722
* Refer to the T7903 data sheet, Figure F-10 for an example of a switch circuit that can be used here.
Figure 35. T7903 S/T Line Interface Scheme
TPR
ZD1
TNR
T1
2.5:1
100
100
JMP1
2
1
3
4
5
6
7
8
RJ-45
RPR
ZD2
RNR
100
JMP2
75
46.4
75
46.4
10 k
46.4
10 k
46.4
D1
D3
D4
D2
D5
D7
D8
D6
100
6.8 V
D9
D10
6.8 V
C1
0.1
μ
F
T2
2.5:1
T3
T7256
NPx_PT
ZD1
NPx_NT
T1
2.0:1
100
JMP1
T3
2
1
3
5
7
8
6
4
RJ-45
NPx_PR
ZD2
NPx_NR
100
JMP2
10
5
10
5
10 k
10
10 k
10
D1
D3
D4
D2
D5
D7
D8
D6
6.8 V
6.8 V
C1
0.1
μ
F
T2
2.0:1
T7903
*
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