Maxim Integrated 73S1217F Windows XP 32 USB CCID and DFU Drivers - Manual (Page 14)

73S1215F, 73S1217F Windows XP 32 USB CCID and DFU Drivers Installation Guide UG_12xxF_030
14 Rev. 1.0
2.5 Trouble Shooting
When the 73S12xxF device is connected to the Host but there is no pop-up message of any kind, it does
not look like Windows recognizes there is a USB device connected.
If LED0 on the 73S12xxF device is blinking, the DFU Boot Loader code is running and the device is
waiting for a USB reset signal from the Host. Do one or all of the following:
1. Make sure the AC Adaptor connected to the 73S12xxF has the appropriate voltage output.
2. Power cycle the device a couple of times.
3. Try another USB cable or connect the device to a different USB port on the Host.
4. Try a different Host machine.
If LED0 is not on, it could be that the device just has a blank part (no firmware code). Contact a Teridian
representative for further assistance.
If LED0 is on but Windows shows the Unrecognized USB Device message. Power cycle the device a
couple of times. If the problem remains, force the DFU Boot Loader code to run as follows:
1. Power OFF the 73S12xxF EVB.
2. Connect USRIO 5 to a 3.3 volt pin (to bring USRIO 5 high).
3. Power On the 73S12xxF EVB.
If the TSCDFU.sys driver enumerates successfully, ground USRIO before the next power cycle.
3 Related Documentation
The following 73S12xxF documents are available from Teridian Semiconductor Corporation:
71S1215F Data Sheet
71S1217F Data Sheet
73S12xxF Smart Card Terminal Controller Family Software User’s Guide
73S12xxF Evaluation Board User’s Guide
4 Contact Information
Teridian Flash Programming Tool
73S1215F, 73S1217F Boot Loader – DFU Class Firmware Application Note
73S1215F, 73S1217F Windows XP 32 USB CCID and DFU Drivers Installation Guide
73S1215, 73S1217F CCID Application Note
For more information about Teridian Semiconductor products or to check the availability of the 73S12xxF,
contact us at:
6440 Oak Canyon Road
Suite 100
Irvine, CA 92618-5201
Telephone: (714) 508-8800
FAX: (714) 508-8878
Email: [email protected]
For a complete list of worldwide sales offices, go to http://www.teridian.com.