XRT83VSH28ES Exar, XRT83VSH28ES Datasheet - Page 22

• 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
FUNCTIONAL DESCRIPTION
The XRT83VSH28 is a fully integrated 8-channel short-haul line interface unit (LIU) that operates from a 1.8V
and a 3.3V power supply. The LIU features are programmed through a standard microprocessor interface or
controlled through Hardware mode. EXAR’s LIU has patented high impedance circuits that allow the
transmitter outputs and receiver inputs to be high impedance when experiencing a power failure or when the
LIU is powered off. Key design features within the LIU optimize 1:1 or 1+1 redundancy and non-intrusive
monitoring applications to ensure reliability without using relays. Additional features include RLOS, a 16-bit
LCV counter for each channel, AIS, QRSS generation/detection, Network Loop Code generation/detection,
TAOS, DMO, and diagnostic loopback modes.
The LIU supports a parallel or serial microprocessor interface (Host mode) for programming the internal
features, or a Hardware mode that can be used to configure the device.
Some features within the Hardware mode are not supported on a per channel basis. The differences between
Hardware mode and Host mode are descibed below in
1.0 HARDWARE MODE VS HOST MODE
1.1
Tx Test Patterns
Dual Loopback
RxRES[1:0]
JASEL[1:0]
EQC[4:0]
Feature Differences in Hardware Mode
F
TERSEL
RxTSEL
TxTSEL
EATURE
T
ABLE
1: D
Fully Supported
Fully Supported
Per Channel
Per Channel
Per Channel
Per Channel
Per Channel
Per Channel
H
IFFERENCES
OST
M
ODE
B
ETWEEN
QRSS diagnostic patterns are not available in Hardware mode.
The TAOS feature is available.
In Hardware mode, RxRES[1:0] is a global setting that applies to
all channels.
In Hardware mode, TERSEL is a global setting that applies to all
channels.
In Hardware mode, the EQC[4:0] is a global setting that applies to
all channels.
In Hardware mode, dual loopback mode is not supported.
Remote, Analog local, and digital loopback modes are available.
In Hardware mode, the jitter attenuator selection is a global setting
that applies to all channels.
In Hardware mode, the receive termination select is a global set-
ting that applies to all channels.
In Hardware mode, the transmit termination select is a global set-
ting that applies to all channels.
19
H
Table
ARDWARE
1.
M
ODE AND
H
ARDWARE
H
OST
M
M
ODE
ODE
REV. 2.0.0