CLINK3V48BT-112 National Semiconductor, CLINK3V48BT-112 Datasheet - Page 8

• Manufacturer Part Number: CLINK3V48BT-112
• Description: KIT EVAL 48BIT DS90CR481/2/3/4
• Manufacturer: National Semiconductor

Specifications of CLINK3V48BT-112

• Main Purpose: Interface, Serializer, Deserializer (SERDES)
• Utilized Ic / Part: DS90CR481, DS90CR482, and DS90CR483
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Secondary Attributes: -
• Embedded: -
• Primary Attributes: -

How to hook up the demo boards (overview)
The Tx demo board TxIN has been laid out to accept two 50 pin IDC connectors from
the incoming data. The TxOUT/RxIN interface uses the 3M MDR connector and 3M
MDR cable with a D26-1 pin out. This combination provides minimal skew between
LVDS channels.
1) Connect one end of the D26-1 MDR cable to the transmitter board and the other end
2) Jumpers have been configured from the factory (Refer to Tx and Rx "Jumper Default
3) From the incoming data, connect the appropriate IDC cable to the transmitter board
4) Power for the Tx and Rx boards are supplied externally through Test Pad (TP) TP1.
Power Connections
The Transmitter and Receiver boards can only be powered by supplying power
externally through TP1 (Vcc) and TP2 (GND). The maximum voltage that should ever
be applied to the Channel Link Transmitter or Receiver Vcc is 4V. For the transmitter
and the receiver to be operational, /PD must be tied to Vcc which is labeled as “JP3”
and "JP1", respectively.
Note: J4 on Tx and J1 on the Rx provide the interface for LVDS signals.
to the receiver board. This is a standard pinout cable, longer lengths are available
for purchase from 3M - see http://www.mmm.com
Settings" on pages 11 and 16) to run in normal mode with pre-emphasis ON.
Jumpers are also provided on both boards so make sure that they are positioned
correctly. See pages 8 and 16 for different configurations.
and connect two (2) 50-pin IDC cables from the receiver boards to the receiver load.
Note that pin 1 on the connector should be connected to pin 1 of the cable.
Grounds for both boards are connected through TP2.
National Semiconductor Corporation
Interface Products
LIT# CLINK3V48BT-112-UM
Date 07/15/08
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