Register Map
13-19
USB Function Module
This bit is updated every frame.
0: Not significant
1: Isochronous packet received with errors
Value after local host or USB reset is low.
13.2.5.4
Isochronous FIFO Empty (ISO_FIFO_Empty)
Only concerns isochronous endpoints.
Set when the FIFO for the selected isochronous endpoint is empty, either via
an appropriate write to the Clr_EP bit or the Reset_EP bit, or after successful
reads from the selected FIFO.
0: Isochronous FIFO not empty
1: Isochronous FIFO empty
Value after local host or USB reset is high (FIFO empty).
13.2.5.5
Isochronous FIFO Full (ISO_FIFO_Full)
Only concerns isochronous endpoints.
Set when the FIFO for the selected isochronous endpoint is full. This condition
is cleared by setting the Clr_EP bit or the Reset_EP bit, or after one successful
read (by the local host or the USB host).
0: Isochronous FIFO not full
1: Isochronous FIFO full
Value after local host or USB reset is low (FIFO empty).
13.2.5.6
Endpoint Halted Flag (EP_Halted)
Only concerns non-isochronous endpoints.
This bit, when set to 1, indicates the selected endpoint is halted. The endpoint
can be put into the halt state only by the local host writing the endpoint halt
control bit (in response to a Set_Feature request, for instance).
0: The selected endpoint is not halted.
1: The selected endpoint is halted.
Value after local host or USB reset is low.
