CRD-49530-USB Cirrus Logic Inc, CRD-49530-USB Datasheet - Page 48

• Manufacturer Part Number: CRD-49530-USB
• Description: Audio Modules & Development Tools Eval Bd 32-Bit Aud Dcdr & Prgrmble DSP
• Manufacturer: Cirrus Logic Inc

Specifications of CRD-49530-USB

• Product: Audio Modules
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Troubleshooting Guide
CRD49530-USB User’s Manual
6-1
6.1 Troubleshooting Guide
6.1.1 Power LEDs
6.1.2 Board not Recognized by PC
This section provides solutions to problems that users might experience when using the CRD49530-USB.
Problem: Power LEDs are not illuminated.
Problem: CRD49530-USB is not Recognized by PC
• Possible cause: DC power supply is not connected to CRD49530-USB.
• Possible cause: Power selection headers (J17, J18, J19) are set incorrectly.
• Possible cause: Jumper settings when using an external power supply are set incorrectly.
• Possible cause: DC power supply is not connected to CRD49530.
• Possible cause: CRD49530 USB Drivers not installed before connecting to PC.
Solution: Ensure the DC wall supply is connected to the DC power input jack (J25), and the
Solution: If you are using the DC wall supply provided with the CRD49530-USB, all jumpers
Solution: If you are using an external power supply for any of the system voltages (5V, 3.3V,
Solution: The CRD49530 is not a USB-powered device. Make sure the DC wall supply is
Solution: Follow these steps:
supply is plugged into a wall outlet.
should be in the ‘REG’ position.
1.8V), ensure that the jumper for that voltage has been removed and power is applied to the
center pin of the appropriate header.
connected to the DC power input jack (J25), and the supply is plugged into a wall outlet.
1. Pull the DC power plug on the CRD49530.
2. Open the device manager on the PC and search for the “Opal Kelly” device under “USB
3. If there is a question mark next to the device, right click on it and open “Properties.” Press
4. Wait 3 seconds, and plug the DC power supply back in.
Devices”.
the “Update Driver” button and let Windows automatically find the driver.
Copyright 2008 Cirrus Logic,
Troubleshooting
Chapter 6
DS705RD3