XRT83SL30ES Exar, XRT83SL30ES Datasheet - Page 31

• Manufacturer Part Number: XRT83SL30ES
• Description: Peripheral Drivers & Components - PCIs 1 CHT1/E1 LIUSH
• Manufacturer: Exar

Specifications of XRT83SL30ES

• Product Category: Peripheral Drivers & Components - PCIs
• Rohs: yes

REV. 1.0.1
Table 11
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
XRT83SL30 Line Interface Unit (LIU). The XRT83SL30 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.
100 Ω
110 Ω
120 Ω
75 Ω
T1
J1
E1
E1
summarizes the transmit terminations.
TERSEL1
SINGLE-CHANNEL T1/E1/J1 SH TRANSCEIVER WITH CLOCK RECOVERY AND JITTER ATTENUATOR
0
0
0
0
0
0
1
1
1
1
1
1
TERSEL0
0
0
0
1
1
1
0
0
0
1
1
1
T
ABLE
0=
1=
T
TRATIO
ABLE
TXTSEL
EXTERNAL
INTERNAL
10: T
0
1
0
0
1
0
0
1
0
0
1
0
0
1
11: T
RANSMIT
RANSMIT
TRATIO
28
T
0
1
x
0
1
x
0
1
x
0
1
x
ERMINATION
T
ERMINATIONS
T
CONTROL
URNS
SET BY
R
100Ω
110Ω
120Ω
75Ω
BITS
1:2.45
int
0Ω
0Ω
0Ω
0Ω
0Ω
0Ω
0Ω
0Ω
1:2
C
Ω
R
ONTROL
ATIO
n, R
2.45
2.45
2.45
2.45
ext
n
2
2
2
2
2
2
2
2
,
AND
SETTINGS
C
ext ARE SUGGESTED
R
3.1Ω
3.1Ω
3.1Ω
3.1Ω
6.2Ω
9.1Ω
6.2Ω
9.1Ω
XRT83SL30
ext
0Ω
0Ω
0Ω
0Ω
Ω
0.68µF
0.68µF
0.68µF
0.68µF
C
0
0
0
0
0
0
0
0
ext