Maxim Integrated 73S12xxF USB-CCID Linux DFU Host Application - Manual (Page 7)

UG_12xxF_038 73S12xxF USB-CCID Linux DFU Host Application Users Guide
Rev. 1.0 7
4. Known Issues
During the testing at Teridian, a problem was encountered. The scenario is described below.
A string descriptor that a version of TSC CCID-DFU firmware supplies to identify the manufacturer of the
device happens to be 16, 32, 48, or 64 characters long. That is, the length of the string descriptor is a
multiple of 16. If the dfu-util program requests this string when the device is in DFU mode, the
firmware may respond with a STALL. Since the provision of string descriptors is optional, however, this
problem does not cause dfu-util program to fail. In this case, when the program is run with the -l
option, the output displays the word UNDEFINED for the parameter “name”, as shown below.
[root@lx95t src]# ./dfu-util -l
dfu-util - (C) 2007-2008 by OpenMoko Inc.
This program is Free Software and has ABSOLUTELY NO WARRANTY
Found Runtime: [0x1862:0x0001] devnum=2, cfg=0, intf=1, alt=0,
name="UNDEFINED", str_idx=1
[root@lx95t src]#
5. 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
6. 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.