ST STM32F207 series - Figure 379. Transmit FIFO Write Task

RM0033 Rev 9 1209/1381
RM0033 USB on-the-go high-speed (OTG_HS)
1260
Figure 379. Transmit FIFO write task
MSv65219V1
1 MPS
or LPS FIFO space
available?
Wait for
TXFELVL or PTXFELVL
interrupt in
OTG_HS_GAHBCFG
Write 1 packet
data to
Transmit FIFO
More packets
to send?
Read GNPTXSTS/HPTXFSIZ
registers for available FIFO
and queue spaces
Start
Done
No
Yes
Yes
No
MPS: Maximum packet size
LPS: Last packet size