XRT83VSH28ES Exar, XRT83VSH28ES Datasheet - Page 36

• Manufacturer Part Number: XRT83VSH28ES
• Description: Peripheral Drivers & Components - PCIs 8 CH E1 LIU SH (low cost version)
• Manufacturer: Exar

Specifications of XRT83VSH28ES

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

XRT83VSH28
8-CHANNEL E1 SHORT-HAUL LINE INTERFACE UNIT
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
21. S
22. S
Digital Loopback
Dual Loopback
IMPLIFIED
IMPLIFIED
RNEG
TPOS
TNEG
RCLK
RPOS
TNEG
RPOS
RNEG
TCLK
TPOS
RCLK
TCLK
B
B
LOCK
LOCK
D
D
IAGRAM OF
IAGRAM OF
Encoder
Decoder
QRSS
Encoder
Decoder
QRSS
Figure
D
D
IGITAL
UAL
22.
JA
JA
JA
JA
L
OOPBACK
L
OOPBACK
33
Data and
Recovery
Control
Figure
Control
Recovery
Timing
Timing
Data and
Clock
Clock
TAOS
TAOS
21.
Tx
Tx
Rx
Rx
TRING
TRING
RRING
TTIP
RRING
RTIP
TTIP
RTIP
REV. 2.0.0