Diffstat (limited to 'share/man/man9')
1 files changed, 4 insertions, 0 deletions
diff --git a/share/man/man9/usbdi.9 b/share/man/man9/usbdi.9
index 501c39f4c492..0e9f9f2e94a6 100644
@@ -593,6 +593,10 @@ use the "usbd_xfer_set_stall()" and "usbd_transfer_clear_stall()"
functions! This flag is automatically cleared after that the stall or
clear stall has been executed.
+If this flag is set the number of frames specified is assumed to give the buffering time in milliseconds instead of frames.
+During transfer setup the frames field is pre scaled with the corresponding value for the endpoint and rounded to the nearest number of frames greater than zero.
+This option only has effect for ISOCHRONOUS transfers.