DS92UT16 Datasheet, PDF (2/111 Pages) Texas Instruments – DS92UT16TUF UTOPIA-LVDS Bridge for 1.6 Gbps Bi-directional Data Transfers

DS92UT16
OBSOLETE
SNOS992E – JANUARY 2002 – REVISED APRIL 2013
DESCRIPTION
The DS92UT16 is a flexible UTOPIA to LVDS Bridge
device. The LVDS Bridge transparently transports the
UTOPIA bus over a high speed LVDS serial link. The
device includes many reliability features such as an
optional 1:1 protection and built in bit error rate
checking.
The parallel interface is user programmable for
maximum flexibility. The user can choose between
UTOPIA Level Level 2 ATM layer (master) of PHY
layer (slave). The UTOPIA-LVDS Bridge supports a
special MPHY (multi-PHY layer) operation mode. The
MPHY operation supports up to 248 standard
UTOPIA Level 2 PHY ports without adding external
circuitry.
Block Diagram
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The serial interface uses LVDS Serializer and
Deserializer technology. The 16:1 bit serialization
allows conveying the full-duplex parallel bus over two
differential transmission pairs. This enables low cost
backplanes and cables. Cable transmission length
can be as long 16 meters.
The serial link carries Flow control information (back
pressure) in both directions. The Bridge device
applies back pressure on a per queue basis over the
31 internal FIFO queues. In addition, the serial link
includes an OAM (Operations and Maintenance)
channel that does not detract from link performance.
There are many applications where the UTOPIA-
LVDS Bridge simplifies designs. Box-to-box
connections can use DS29UT16 devices across
cables. Access multiplexor applications can use the
devices across a PCB backplane for point-to-point
and lightly loaded multidrop configurations.
Figure 1. DS92UT16 Block Diagram
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