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AT32F413
Series Reference Manual
2022.06.27
Page 325
Rev 2.00
1: Enabled
Bit 7: 5
Reserved
0x0
resd
Kept at its default value.
Bit 4
GRESUME
0x0
rw
Generate Resume request
In suspend mode, the software can set this bit to send a
resume signal to the host in order to wake up it. It must be
cleared between 10ms and 15ms.
Bit 3
SSP
0x0
rw
Software suspend config
This bit is set by software when a suspend flag is detected.
When exiting suspend state, this bit must be cleared by
software.
0: Software leaves suspend mode
1: Software enters suspend mode
Bit 2
LPM
0x0
rw
Low power mode
While entering suspend mode, this bit can be set to reduce
power consumption. It is cleared automatically when the
USB Core is waken up.
0: No low-power mode
1: Low-power mode
Bit 1
DISUSB
0x1
rw
Disble USB PHY
0: USB PHY enabled
1: USB PHY disabled
Bit 0
CSRST
0x1
rw
Core soft Reset
0: Software clears reset
1: Software resets usb core, and a reset interrupt is
generate.
21.5.3 USBFS interrupt status register (USBFS_INTSTS)
Bit
Register
Reset value
Type
Description
Bit 15
TC
0x0
ro
Transaction completed
0: Reset value
1: This bit is set to indicate that the USB has successfully
completed one IN/OUT transaction
Bit 14
UCFOR
0x0
rw0c
USB Core fifo overrun
0: Reset value
1: USB Core fifo overrun
Bit 13
BE
0x0
rw0c
Bus error
0: Reset value
1: Bus error detected, such as, CRC check error, bit-
stuffing error, Answer timeout error and frame format error.
Bit 12
WK
0x0
rw0c
Wakeup
0: Reset value
1: A wakeup signal is received when the USB is in suspend
state.
Bit 11
SP
0x0
rw0c
Bus Suspend
0: Reset value
1: No data transfer has been received for 3ms, and the bus
enters suspend state.
Bit 10
RST
0x0
rw0c
Bus reset
0: Reset value
1: A USB reset signal was detected on the bus.
Bit 9
SOF
0x0
rw0c
Start of frame
0: Reset value
1: This bit is set to indicate that a SOF transaction arrives
through the bus.
Bit 8
LSOF
0x0
rw0c
Lost start of frame