CLINK3V28BT-85 National Semiconductor, CLINK3V28BT-85 Datasheet - Page 19

• Manufacturer Part Number: CLINK3V28BT-85
• Description: KIT EVAL 28BIT DS90CR287/288A
• Manufacturer: National Semiconductor

Specifications of CLINK3V28BT-85

• Main Purpose: Interface, Serializer, Deserializer (SERDES)
• Utilized Ic / Part: DS90CR287, DS90CR288A
• 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 potential problems. If the problem persists, please contact the
Interface Applications hotline number ([phone]) for assistance.
QUICK CHECKS:
1. Check that Power and Ground are connected to both Tx AND Rx boards.
2. Check the supply voltage (typical 3.3V) and also current draw with both Tx and
3. Verify input clock and input data signals meet requirements (VIL, VIH, tset,
4. Check that the Jumpers are set correctly.
5. Check that the 2 meter cable is properly connected.
TROUBLESHOOTING 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.
Rx boards (should be about 200mA with clock and one data bit at 66MHz).
thold), Also verify that data is strobed on the rising edge of the clock.
National Semiconductor Corporation
Channel Link Evaluation Kit User Manual
Solution…
Make sure the data is applied to the correct input pin.
Make sure data is valid at the 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 that the devices are enabled (/PD=Vcc) for
operation.
Check for shorts in the cables connecting the TX and
RX boards.
Use a larger power supply that will provide enough
current for the demo boards, a 500mA power supply
is recommended.
Interface Products
LIT# CLINK3V28BT-85-UM
Rev 2.1
Date: 10/12/2005
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