DS26334DK Maxim Integrated Products, DS26334DK Datasheet - Page 33
DS26334DK
Manufacturer Part Number
DS26334DK
Description
KIT DESIGN FOR DS26334
Manufacturer
Maxim Integrated Products
Specifications of DS26334DK
Main Purpose
Telecom, Line Interface Units (LIUs)
Utilized Ic / Part
DS26334
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Secondary Attributes
-
Embedded
-
Primary Attributes
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
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5.8.2 Digital Loopback
The transmit system data TPOS, TNEG, and TCLK will be looped back to output on RCLK, RPOS, and RNEG. The
data input at TPOS and TNEG is output on TTIP and TRING. All ones can also be output when selected by the
Transmit All Ones Enable Register (TAOE). Signals at RTIP and RRING will be ignored. This loopback is
conceptually shown in
Figure 5-11. Digital Loopback
5.8.3 Remote Loopback
The inputs at RTIP and RRING are looped back to TTIP and TRING. The inputs at TCLK, TPOS, and TNEG are
ignored during a remote loopback. This loopback is conceptually shown in
Note: Remote loopback does not take precedence over transmit power-down and requires TCLK to operate. The
transmitters will use the recovered RCLK in remote loopback. TCLK is still required because if it is removed the
transmitters will power-down (TCLK held low) or transmit all ones (TCLK held high).
Figure 5-12. 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
Figure
5-11.
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
DS26334 3.3V, 16-Channel, E1/T1/J1 Short/Long-Haul Line Interface Unit
33 of 121
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
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
Figure
5-12.
Line
Driver
Line
Driver
TTIP
TRING
TTIP
TRING
RRING
RRING
RTIP
RTIP
TPOS
TPOS
TNEG
TNEG
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