XRT83SL38ES Exar, XRT83SL38ES Datasheet - Page 45
![no-image](/images/no-image-200.jpg)
XRT83SL38ES
Manufacturer Part Number
XRT83SL38ES
Description
Peripheral Drivers & Components - PCIs 8 CHT1/E1LIUSH
Manufacturer
Exar
Datasheet
1.XRT83SL38ES.pdf
(88 pages)
Specifications of XRT83SL38ES
Product Category
Peripheral Drivers & Components - PCIs
Rohs
yes
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REV. 1.0.2
LOCAL ANALOG LOOP-BACK (ALOOP)
With Local Analog Loop-Back activated, the transmit data at TTIP and TRING are looped-back to the analog
input of the receiver. External inputs at RTIP/RRING in this mode are ignored while valid transmit data
continues to be sent to the line. Local Analog Loop-Back exercises most of the functional blocks of the
XRT83SL38 including the jitter attenuator which can be selected in either the transmit or receive paths. Local
Analog Loop-Back is shown in
In this mode, the jitter attenuator (if selected) can be placed in the transmit or receive path.
REMOTE LOOP-BACK (RLOOP)
With Remote Loop-Back activated, receive data after the jitter attenuator (if selected in the receive path) is
looped back to the transmit path using RCLK as transmit timing. In this mode transmit clock and data are
ignored, while RCLK and receive data will continue to be available at their respective output pins. Remote
Loop-Back with jitter attenuator selected in the receive path is shown in
OCTAL T1/E1/J1 SH TRANSCEIVER WITH CLOCK RECOVERY AND JITTER ATTENUATOR
F
IGURE
F
IGURE
RPOS
RNEG
TPOS
TNEG
RNEG
RCLK
TNEG
RPOS
TCLK
TPOS
RCLK
TCLK
18. R
17. L
EMOTE
OCAL
Figure
Encoder
Decoder
Encoder
Decoder
L
A
OOP
NALOG
17.
-
BACK MODE WITH JITTER ATTENUATOR SELECTED IN RECEIVE PATH
L
OOP
JA
JA
-
BACK SIGNAL FLOW
Recovery
Data &
Clock
43
Timing
Control
Recovery
Timing
Control
Data &
Clock
Rx
Tx
Tx
Figure
Rx
18.
TTIP
TRING
RTIP
RRING
TTIP
TRING
RTIP
RRING
XRT83SL38
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