DS26303L-120+ Maxim Integrated Products, DS26303L-120+ Datasheet - Page 66
DS26303L-120+
Manufacturer Part Number
DS26303L-120+
Description
IC LIU E1/T1/J1 3.3V 144-ELQFP
Manufacturer
Maxim Integrated Products
Type
Line Interface Units (LIUs)r
Datasheet
1.DS26303L-120.pdf
(101 pages)
Specifications of DS26303L-120+
Number Of Drivers/receivers
8/8
Protocol
T1/E1/J1
Voltage - Supply
3.135 V ~ 3.465 V
Mounting Type
Surface Mount
Package / Case
144-LQFP Exposed Pad, 144-eLQFP, 144-HLQFP
Maximum Operating Temperature
+ 70 C
Mounting Style
SMD/SMT
Minimum Operating Temperature
0 C
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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Figure 6-9. Digital Loopback
6.8.3
The inputs at RTIPn and RRINGn are looped back to TTIPn and TRINGn. The inputs at TPOSn, and TNEGn are
ignored during a remote loopback. While the TCLKn pin is ignored in remote loopback mode for the data path, the
TCLKn pin must have an active signal applied in order to keep the transmitter operational. See the TCLKn pin
description for details. This loopback is conceptually shown in
Figure 6-10. Remote Loopback
Remote Loopback
TCLK
TCLK
TNEG
TNEG
TPOS
TPOS
RNEG
RNEG
RCLK
RPOS
RCLK
RPOS
H D B 3 /
B 8 Z S
D e c o d e r
H D B 3 /
B 8 Z S
D e c o d e r
H D B 3 /
B 8 Z S
E n c o d e r
H D B 3 /
B 8 Z S
E n c o d e r
O p t i o n a l
J i t t e r
A t t e n u a t o r
O p t i o n a l
J i t t e r
A t t e n u a t o r
O p t i o n a l
J i t t e r
A t t e n u a t o r
O p t i o n a l
J i t t e r
A t t e n u a t o r
DS26303: 3.3V, T1/E1/J1, Short-Haul, Octal Line Interface Unit
66 of 101
T r a n s m i t
D i g i t a l
T r a n s m i t
D i g i t a l
R e c e i v e
D i g i t a l
R e c e i v e
D i g i t a l
Figure
6-10.
T r a n s m i t
A n a l o g
T r a n s m i t
A n a l o g
R e c e i v e
A n a l o g
R e c e i v e
A n a l o g
Line
Driver
Line
Driver
RRING
RRING
RTIP
RTIP
TPOS
TPOS
TNEG
TNEG
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