WM8510-EV1M
w
Rev 1.1 April 2006
43
4.
Expand the tree beside “Universal Serial Bus Controllers”
Expect to observe the following devices:
•
USB Composite Device
5.
If all three of the above devices are visible, the PC USB drivers are functional and the Wolfson
USB Interface is functional. At this stage, if the WM8510 Control Software does not detect the
Wolfson USB Interface, please refer to the section titled “Re-start PC”.
6.
If you observe the following (Yellow “?” in device manager), the PC USB drivers are functional
but the WM8510 Evaluation Board either has not re-booted firmware, or it may have a fault,
please refer to the section titled “Check USB Evaluation System firmware“.
7. If no devices are visible, but the WM8510 Evaluation Board is definitely powered on and
connected to the PC, have any USB devices ever been connected to the PC, and successfully
used?
8.
If other USB devices have been connected to the PC, and successfully used, please refer to
the section titled “Re-start PC”.
9.
If no other USB devices have been connected to the PC or successfully used, it is possible that
the PC has a USB driver issue. One known PC driver issue on Win XP can be resolved as
follows: view the device manager and expand the tree beside “Universal Serial Bus
Controllers”. Right click on each “Host Controller” device as follows.
Select “Uninstall” for each Host Controller until none are visible in the device manager. Re-start the
PC. When the PC has re-started, it should detect each USB host controller and re-install them
automatically. You can then try connecting to the Wolfson USB Evaluation System again.
You may require administrator privileges to do this on your PC. If you are unsure about uninstalling
the USB Host Controllers, please contact your local PC support specialist.
RE-START PC
If the PC USB drivers are functional and the WM8510 Evaluation Board is functional, but the
WM8510 Control Software does not detect the WM8510 Evaluation Board, try re-starting the PC.
There is a known issue where (particularly after long periods without a re-start) certain models of PC
cannot perform the detection function.
Summary of Contents for WM8510-EV1M
Page 1: ...WM8510 EV1M Evaluation Board User Handbook Rev 1 1...
Page 8: ...WM8510 EV1M w Rev 1 1 April 2006 8 INTERFACES Figure 1 Interfaces...
Page 14: ...WM8510 EV1M w Rev 1 1 April 2006 14 WM8510 BLOCK DIAGRAM Figure 4 WM8510 Block Diagram...
Page 31: ...WM8510 EV1M w Rev 1 1 April 2006 31 Figure 25 Analogue Output...
Page 32: ...WM8510 EV1M w Rev 1 1 April 2006 32 Figure 26 WM8510...
Page 34: ...WM8510 EV1M w Rev 1 1 April 2006 34 PCB LAYOUT Figure 29 Silkscreen Top...
Page 35: ...WM8510 EV1M w Rev 1 1 April 2006 35 Figure 30 Top Layer...
Page 36: ...WM8510 EV1M w Rev 1 1 April 2006 36 Figure 31 Bottom Layer...
