參數(shù)資料
型號: XRT83SL34IV
廠商: Exar Corporation
文件頁數(shù): 27/80頁
文件大小: 0K
描述: IC LIU T1/E1/J1 QUAD 128TQFP
標(biāo)準(zhǔn)包裝: 72
類型: 線路接口裝置(LIU)
驅(qū)動器/接收器數(shù): 4/4
規(guī)程: T1,E1,J1
電源電壓: 3.135 V ~ 3.465 V
安裝類型: 表面貼裝
封裝/外殼: 128-LQFP
供應(yīng)商設(shè)備封裝: 128-TQFP(14x20)
包裝: 托盤
XRT83SL34
QUAD T1/E1/J1 SH TRANSCEIVER WITH CLOCK RECOVERY AND JITTER ATTENUATOR
REV. 1.0.0
30
diagram for T1 (100
) in the external termination mode. Figure 13 is a simplified block diagram for E1 (75) in
the external termination mode.
Table 11 summarizes the transmit terminations.
REDUNDANCY APPLICATIONS
Telecommunication system design requires signal integrity and reliability. When a T1/E1 primary line card has
a failure, it must be swapped with a backup line card while maintaining connectivity to a backplane without
losing data. System designers can achieve this by implementing common redundancy schemes with the
XRT83SL34 Line Interface Unit (LIU). The XRT83SL34 offers features that are tailored to redundancy
applications while reducing the number of components and providing system designers with solid reference
designs. These features allow system designers to implement redundancy applications that ensure reliability.
The Internal Impedance mode eliminates the need for external relays when using the 1:1 and 1+1 redundancy
schemes.
TABLE 10: TRANSMIT TERMINATION CONTROL
TRATIO
TURNS RATIO
01:2.45
11:2
TABLE 11: TRANSMIT TERMINATIONS
TERSEL1
TERSEL0
TXTSEL
TRATIO
Rint
n
Rext
Cext
0=EXTERNAL
SET BY
CONTROL
BITS
n, Rext, AND Cext ARE SUGGESTED
SETTINGS
1=INTERNAL
T1
100
0
000
0
2.45
3.1
0
001
0
23.1
0
1
x
12.5
20
0.68
F
J1
110
0
100
0
2.45
3.1
0
101
0
23.1
0
1
x
13.75
20
0.68
F
E1
75
1
000
0
2.45
6.2
0
1
001
0
29.1
0
10
1
x
9.4
20
0.68
F
E1
120
1
100
0
2.45
6.2
0
1
101
0
29.1
0
11
1
x
15
20
0.68
F
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