R01UH0823EJ0100 Rev.1.00
Page 858 of 1823
Jul 31, 2019
RX23W Group
32. USB 2.0 Host/Function Module (USBc)
32.2.3
Device State Control Register 0 (DVSTCTR0)
x: Don’t care
Address(es): 000A 0008h
b15
b14
b13
b12
b11
b10
b9
b8
b7
b6
b5
b4
b3
b2
b1
b0
—
—
—
—
HNPBT
OA
EXICE
N
VBUSE
N
WKUP RWUP
E
USBRS
T
RESU
ME
UACT
—
RHST[2:0]
Value after reset:
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Bit
Symbol
Bit Name
Description
R/W
b2 to b0
USB Bus Reset Status Flag
When the host controller is selected
b2
b0
0 0 0: Communication speed not determined
(powered state or no connection)
1 x x: USB bus reset in progress
0 0 1: Low-speed connection
0 1 0: Full-speed connection
When the function controller is selected
b2
b0
0 0 0: Communication speed not determined
0 0 1: USB bus reset in progress or low-speed connection
0 1 0: USB bus reset in progress or full-speed connection
R
b3
—
Reserved
This bit is read as 0. The write value should be 0.
R/W
b4
USB Bus Enable
0: Downstream port is disabled (SOF transmission is
disabled).
1: Downstream port is enabled (SOF transmission is
enabled).
R/W
b5
Resume Output
0: Resume signal is not output.
1: Resume signal is output.
R/W
b6
USB Bus Reset Output
0: USB bus reset signal is not output.
1: USB bus reset signal is output.
R/W
b7
Wakeup Detection Enable
0: Downstream port wakeup is disabled.
1: Downstream port wakeup is enabled.
R/W
b8
Wakeup Output
0: Remote wakeup signal is not output.
1: Remote wakeup signal is output.
R/W
b9
USB0_VBUSEN Output Pin Control
0: External USB0_VBUSEN pin outputs low.
1: External USB0_VBUSEN pin outputs high.
R/W
b10
USB0_EXICEN Output Pin Control
0: External USB0_EXICEN pin outputs low.
1: External USB0_EXICEN pin outputs high.
R/W
b11
Host Negotiation Protocol (HNP)
Control
This bit is used when switching from device B to device A
while in OTG mode. If the HNPBTOA bit is 1, the internal
function control keeps the suspended state until the HNP
processing ends even though SYSCFG.DPRPU = 0 or
SYSCFG.DCFM = 1.
R/W
b15 to b12 —
Reserved
These bits are read as 0. The write value should be 0.
R/W