The SN65LVCP15 is a high performance serial link mux for use in Fibre Channel (1.0625
Gb/s), Gigabit Ethernet (1.25 Gb/s), and other high speed interface applications. A common
application involves a serializer/deserializer (SerDes), such as the TLK2201B, which would normally
be connected to the IN± and OUT± ports in order to provide duplicate set of links on the IN0/OUT0
and IN1/OUT1 ports. This type of application is often used to implement high speed test ports that
can be monitored without affecting the serial data stream of the application. A popular application
is in Line Cards, that use serial links from a SerDes like TLK2201B (SLLS585), where the SN65LVCP15 provides redundant, hot-swappable links to
redundant Switch Fabric Cards.
During normal operation, IN is sent to both OUT0 and OUT1 whose buffers are enabled when
OE0 and OE1 are HIGH. OUT0 can select between IN and IN1. OUT1 can select between IN and IN0. OUT
can select between IN0 and IN1.
In Link Replicator applications, such as the Line Card to Switch Card links, IN is
transmitted to both OUT0 and OUT1 which either IN0 or IN1 is selected at OUT. In host Adapter
applications, IN goes to OUT0 (an internal connector) which returns data and IN0. IN0 is looped to
OUT1 (an external connector) which returns data on IN1 and then back to the SerDes on OUT.
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