ST STM32F207 series User Manual

USB on-the-go full-speed (OTG_FS) RM0033
990/1381 RM0033 Rev 9
The application reads this register whenever there is an OTG interrupt and clears the bits in
this register to clear the OTG interrupt.
313029282726252423222120191817161514131211109876543210
Reserved
DBCDNE
ADTOCHG
HNGDET
Reserved
HNSSCHG
SRSSCHG
Reserved
SEDET
Res.
rc_
w1
rc_
w1
rc_
w1
rc_
w1
rc_
w1
rc_
w1
Bits 31:20 Reserved, must be kept at reset value.
Bit 19 DBCDNE: Debounce done
The core sets this bit when the debounce is completed after the device connect. The
application can start driving USB reset after seeing this interrupt. This bit is only valid when
the HNP Capable or SRP Capable bit is set in the OTG_FS_GUSBCFG register (HNPCAP
bit or SRPCAP bit in OTG_FS_GUSBCFG, respectively).
Note: Only accessible in host mode.
Bit 18 ADTOCHG: A-device timeout change
The core sets this bit to indicate that the A-device has timed out while waiting for the B-device
to connect.
Note: Accessible in both device and host modes.
Bit 17 HNGDET: Host negotiation detected
The core sets this bit when it detects a host negotiation request on the USB.
Note: Accessible in both device and host modes.
Bits 16:10 Reserved, must be kept at reset value.
Bit 9 HNSSCHG: Host negotiation success status change
The core sets this bit on the success or failure of a USB host negotiation request. The
application must read the host negotiation success bit of the OTG_FS_GOTGCTL register
(HNGSCS in OTG_FS_GOTGCTL) to check for success or failure.
Note: Accessible in both device and host modes.
Bits 7:3 Reserved, must be kept at reset value.
Bit 8 SRSSCHG: Session request success status change
The core sets this bit on the success or failure of a session request. The application must
read the session request success bit in the OTG_FS_GOTGCTL register (SRQSCS bit in
OTG_FS_GOTGCTL) to check for success or failure.
Note: Accessible in both device and host modes.
Bit 2 SEDET: Session end detected
The core sets this bit to indicate that the level of the voltage on V
BUS
is no longer valid for a
B-Peripheral session when V
BUS
< 0.8 V.
Bits 1:0 Reserved, must be kept at reset value.

ST STM32F207 series Specifications

General

Brand	ST
Model	STM32F207 series
Category	Microcontrollers
Language	English