WM8510-EV1M
w
Rev 1.1 April 2006
44
After re-start, 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, check whether
any USB devices have ever been connected to the PC, and successfully used:
•
If other USB devices have been connected to the PC, and successfully used, please contact
Wolfson for support.
•
If no other USB devices have been connected to the PC or successfully used, please contact
your local support specialist to have the USB system checked with a known good USB device.
The best type of device for testing the USB system is a USB Mouse or USB Keyboard – this is
because these devices use the same type of USB driver (HID) as the WM8510 Control
Software.
CHECK USB EVALUATION SYSTEM FIRMWARE
These checks should only be carried out if the PC USB Drivers are OK.
1.
Start the WM8510 Control Software and view the “Firmware Revision”, if this number stays at
0, the if the power LEDs are all ON, but the “Firmware OK” LED (refer to hardware User
Handbook) is not ON, please press the reset button on the USB Evaluation System or power
cycle it (i.e. power off-on).
2.
If reset or power cycle do not illuminate the “Firmware OK” LED, please check the link setting
relating to Firmware selection (refer to hardware User Handbook). Please check that an
EEPROM chip is correctly inserted into the correct socket on the hardware (refer to hardware
User Handbook).
MESSAGE BOX EXPLANATIONS - FILE LOAD/SAVE FUNCTIONS
“UNABLE TO WRITE SETTINGS TO DEVICE REGISTERS”
Either:
1.
The WM8510 Control Software was unable to open the specified file (because the file was not
found or the user cancelled).
2.
None of the file lines contained valid information.
3.
A communications failure prevented values being written to the Evaluation Board
“… NO DEVICE WRITE HISTORY…”
The user tried to save a record of all WM8510 device writes, but no device writes have taken place
since the software was started. A record of device writes can only be saved from the same instance
of WM8510 Control Software which performed the writes. If the WM8510 Control Software is quit
then re-started, the record of device writes will be cleared, even if the WM8510 Evaluation board
remained powered on and the registers maintained their state throughout.
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...
