XRT83SL314ES Exar, XRT83SL314ES Datasheet - Page 30
![no-image](/images/no-image-200.jpg)
XRT83SL314ES
Manufacturer Part Number
XRT83SL314ES
Description
LIN Transceivers 14 CHT1/E1 LIUSH
Manufacturer
Exar
Datasheet
1.XRT83SL314ES.pdf
(83 pages)
Specifications of XRT83SL314ES
Product Category
LIN Transceivers
Rohs
yes
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XRT83SL314
REV. 1.0.1
This applications section describes common T1/E1 system considerations along with references to application
notes available for reference where applicable.
The XRT83SL314 supports several loopback modes for diagnostic testing. The following section describes the
local analog loopback, remote loopback, digital loopback, and dual loopback modes.
With local analog loopback activated, the transmit output data at TTIP/TRING is internally looped back to the
analog inputs at RTIP/RRING. External inputs at RTIP/RRING are ignored while valid transmit output data
continues to be sent to the line. A simplified block diagram of local analog loopback is shown in Figure 19.
F
N
With remote loopback activated, the receive input data at RTIP/RRING is internally looped back to the transmit
output data at TTIP/TRING. The remote loopback includes the Receive JA (if enabled). The transmit input
data at TCLK/TPOS/TNEG are ignored while valid receive output data continues to be sent to the system. A
simplified block diagram of remote loopback is shown in Figure 20.
F
3.0 T1/E1 APPLICATIONS
3.1
3.1.1
3.1.2
IGURE
OTE
IGURE
: The transmit diagnostic features such as TAOS, NLC generation, and QRSS take priority over the transmit input
data at TCLK/TPOS/TNEG.
19. S
20. S
Loopback Diagnostics
Local Analog Loopback
Remote Loopback
IMPLIFIED
IMPLIFIED
TNEG
RPOS
RNEG
TCLK
TPOS
RCLK
B
B
LOCK
LOCK
TNEG
RPOS
RNEG
TCLK
TPOS
RCLK
D
D
NLC/PRBS/QRSS
IAGRAM OF
IAGRAM OF
Decoder
Encoder
NLC/PRBS/QRSS
Encoder
Decoder
L
R
14-CHANNEL T1/E1/J1 SHORT-HAUL LINE INTERFACE UNIT
OCAL
EMOTE
JA
JA
A
L
JA
JA
NALOG
OOPBACK
27
Data and
Recovery
Control
Timing
Clock
Recovery
Data and
L
Control
Timing
Clock
OOPBACK
TAOS
TAOS
Tx
Rx
Tx
Rx
TRING
TTIP
RRING
RTIP
TRING
RRING
TTIP
RTIP
xr
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