參數(shù)資料
型號: 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): 99/116頁
文件大?。?/td> 1056K
代理商: T7256A
Data Sheet
January 1998
T7256 Single-Chip NT1 (SCNT1) Transceiver
Lucent Technologies Inc.
95
Questions and Answers
(continued)
S/T-Interface
(continued)
A36:
(continued)
5-4723
* Refer to the T7250 data sheet, Figure F-10 for an example of a switch circuit that can be used here.
Figure 36. T7250C S/T Line Interface Scheme
Note:
The circuit shown above has subtle differences from that shown in the T7250C data sheet. Either circuit is
suitable, since they will both pass the required conformance tests.
TPR
ZD1
TNR
T1
2.5:1
100
JMP1
T3
2
1
3
5
7
8
6
4
RJ-45
RPR
ZD2
RNR
100
JMP2
10
46.5
10
46.5
10 k
46.5
10 k
46.5
D1
D3
D4
D2
D5
D7
D8
D6
6.8 V
6.8 V
C1
0.1
μ
F
T2
2.5:1
T7250C
*
D9
D10
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