Channel Link Evaluation Kit User Manual
National Semiconductor Corporation
Interface Products
LIT# CLINK3V28BT-85-UM
Rev 2.1
Date: 10/12/2005
Page 3 of 28
Introduction:
National Semiconductor - Interface Products Group Channel Link evaluation kit
contains a Transmitter (Tx) board, a Receiver (Rx) board along with interfacing
cables. This kit will demonstrate the Channel Link chipset transmitting data streams
using Low Voltage Differential Signaling (LVDS).
The Transmitter board accepts LVTTL/LVCMOS data signals from an incoming data
source along with the clock signal. The LVDS Transmitter converts the
LVTTL/LVCMOS parallel lines into four serialized LVDS data pairs plus a LVDS
clock. The serial data streams toggle at 3.5 times the clock rate.
The Receiver board accepts the LVDS serialized data streams plus clock and
converts the data back into parallel LVTTL/LVCMOS data signals and clock.
The user simply needs to provide the proper LVTTL/LVCMOS data input and clock
to the Transmitter and the chipset will serialize, transmit, and deserialize the data
converting it back into the LVTTL/LVCMOS parallel bus plus clock. A power down
feature is also provided that reduces current draw when the link is not required.
