ST STM32F412

USB on-the-go full-speed (OTG_FS) RM0402
1076/1163 RM0402 Rev 6
Figure 345. Normal bulk/control OUT/SETUP
1. The grayed elements are not relevant in the context of this figure.
MSv36018V1
A
C
K
HostApplication AHB
O
U
T
D
A
T
A
0
M
P
S
1
MPS
write_tx_fifo
(ch_1)
init_reg(ch_1)
set
_
c
h_
en
(
ch_2
)
init_reg(ch_2
)
write_tx_fifo
(ch_1)
set_c
h
_en
(
ch_2
)
c
h_2
ch_2
ch_1
ch_1
De-allocate
(ch_1)
c
h_2
c
h_2
c
h_2
ch_1
A
C
K
O
U
T
t
t
RxFLvl interrupt
X
f
e
r
C
o
m
p
l
i
n
t
e
r
r
u
p
t
set_c
h
_en
(
ch_2
)
Non-Periodic Request
Queue
Assume that this queue
can hold 4 entries.
4
1
6
_
D
A
T
A
0
IN
rea
d
_rx_st
s
read_rx_
f
i
fo
set_c
h
_en
(
ch_2
)
t
t
RxFLvl interrupt
1
M
P
S
rea
d
_rx_stsre
ad_rx_
f
i
fo
t
t
RxFLvl interrupt
rea
d
_rx_st
s
t
t
XferCompl interrupt
Disable
(
ch_2
)
1
2
3
4
5
6
7
De
-
alloca
t
e
(
ch_2
)
ChHltd interrupt
t
ChHltd interrupt
c
h_2
2
3
5
7
8
9
12
1
3
rea
d
_rx_st
s
t
t
RxFLvl interrupt
10
11
D
A
T
A
1
M
P
S
D
A
T
A
1
DeviceUSB
A
A
ACK
IN
A
A
ACK
1
MPS
1
M
P
S