CLINK3V48BT-112 National Semiconductor, CLINK3V48BT-112 Datasheet - Page 20

• 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: -

Troubleshooting
If the demo boards are not performing properly, use the following as a guide for quick
solutions to common problems. If the problem persists, contact the hotline number
listed under Additional Information section of this document.
Check the following:
1. Power and Ground are connected to both Tx AND Rx boards.
2. Supply voltage (typical 3.3V) and current (It's around 200mA with clock and one data
3. Input clock and input data (It's best to start with one data bit.) to the Tx board.
4. Jumpers are set correctly or to default settings.
5. The 2 meter cable is connecting the Tx and Rx boards.
6. Make sure all of the connections are good.
7. Start with a low clock frequency (40 or 66 MHz) and work from there.
Trouble shooting chart:
Problem…
There is only the output clock.
There is no output data.
No output data and clock.
Power, ground, input data and
input clock are connected
correctly, but no outputs.
The devices are pulling more
than 1A of current.
After powering up the demo
boards, the power supply
reads less than 3V when it is
set to 3.3V.
bit at 66MHz.) are correct.
National Semiconductor Corporation
Solution…
Make sure the data scramble/mapping is correct.
Make sure there is data input.
Make sure Power is on. Input data and clock are
active and connected correctly.
Make sure that the 2 meter cable is secured to both
demo boards.
Check the Power Down pins of both boards and
make sure the devices are enabled (/PD=ON) for
operation.
Check for shorts on the demo boards.
Use a larger power supply that will provide enough
current for the demo boards.
Interface Products
LIT# CLINK3V48BT-112-UM
Date 07/15/08
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