USB on-the-go high-speed (OTG_HS) RM0090
1478/1731 DocID018909 Rev 11
Figure 414. Transmit FIFO write task
• Reading the receive FIFO
The application must ignore all packet statuses other than IN data packet (bx0010).
1 MPS
or LPS FIFO space
available?
Wait for
Write 1 packet
data to
Transmit FIFO
More packets
to send?
Yes
No
No
Read GNPTXSTS/
HPTXFSIZ registers for
available FIFO and
queue spaces
Yes
MPS: Maximum packet size
LPS: Last packet sizetacet
Start
Done
ai15673
TXFELVL or PTXFELVL
interrupt in
OTG_FS_GAHBCFG