Maxim Integrated 73S12xxF USB-CCID Host GUI - Manual (Page 15)

UG_12xxF_037 73S12xxF USB-CCID Host GUI Users Guide
Rev. 1.1 15
Figure 11: DFU Request Sub-frame Is Activated after a DFU Device Has Been Selected
2.1.8.2 DFU Requests Sub-frame
A smart card reader that has transitioned into the DFU mode is referred as a DFU device by the host
application program. The DFU Requests sub-frame is enabled only after a DFU device in the Card
Reader list box has been selected. This sub-frame contains five buttons each of which, when clicked,
causes a particular DFU command to be sent to the DFU device. These DFU requests are:
DFU_DNLOAD (DFU Download), DFU_GETSTATUS, DFU_CLRSTATUS (DFU Clear Status),
DFU_GETSTATE, and DFU_ABORT.