XRT83SH314ES Exar, XRT83SH314ES Datasheet - Page 37

• Manufacturer Part Number: XRT83SH314ES
• Description: Peripheral Drivers & Components - PCIs 14 CHT1/E1LIU SH
• Manufacturer: Exar

Specifications of XRT83SH314ES

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

REV. 1.0.4
With digital loopback activated, the transmit input data at TCLK/TPOS/TNEG is looped back to the receive
output data at RCLK/RPOS/RNEG. The digital loopback mode includes the Transmit JA (if enabled). The
receive input data at RTIP/RRING is ignored while valid transmit output data continues to be sent to the line. A
simplified block diagram of digital loopback is shown in
F
With dual loopback activated, the remote loopback is combined with the digital loopback. A simplified block
diagram of dual loopback is shown in
F
4.1.3
4.1.4
IGURE
IGURE
24. S
25. S
Digital Loopback
Dual Loopback
RNEG
TNEG
RPOS
TPOS
RCLK
TCLK
RNEG
TNEG
RPOS
TPOS
RCLK
TCLK
IMPLIFIED
IMPLIFIED
B
B
LOCK
LOCK
QRSS/PRBS
QRSS/PRBS
Encoder
Decoder
Decoder
Encoder
D
D
IAGRAM OF
IAGRAM OF
Figure
D
D
14-CHANNEL T1/E1/J1 SHORT-HAUL LINE INTERFACE UNIT
IGITAL
UAL
JA
JA
25.
JA
JA
L
OOPBACK
L
OOPBACK
33
Figure
Recovery
Data and
Control
Timing
Control
Recovery
Data and
Clock
Timing
Clock
24.
TAOS
TAOS
Tx
Tx
Rx
Rx
XRT83SH314
TRING
RRING
TRING
RRING
RTIP
TTIP
TTIP
RTIP