TM4C1237E6PM Datasheet, PDF (1096/1277 Pages) Texas Instruments – Tiva Microcontroller

Universal Serial Bus (USB) Controller
Bit/Field
0
Name
PWRDNPHY
Type
RW
Reset
0
Description
Power Down PHY
Value Description
0 No effect.
1 Powers down the internal USB PHY.
OTG B / Device Mode
USB Power (USBPOWER)
Base 0x4005.0000
Offset 0x001
Type RW, reset 0x20
7
6
5
4
ISOUP SOFTCONN
reserved
Type RW
RW
RO
RO
Reset
0
0
1
0
3
2
1
0
RESET RESUME SUSPEND PWRDNPHY
RO
RW
RO
RW
0
0
0
0
Bit/Field
7
6
Name
ISOUP
SOFTCONN
Type
RW
RW
Reset
0
0
Description
Isochronous Update
Value Description
0 No effect.
1 The USB controller waits for an SOF token from the time the
TXRDY bit is set in the USBTXCSRLn register before sending
the packet. If an IN token is received before an SOF token, then
a zero-length data packet is sent.
Note: This bit is only valid for isochronous transfers.
Soft Connect/Disconnect
Value Description
0 The USB D+/D- lines are tri-stated.
1 The USB D+/D- lines are enabled.
5:4
reserved
RO
0x2
Software should not rely on the value of a reserved bit. To provide
compatibility with future products, the value of a reserved bit should be
preserved across a read-modify-write operation.
3
RESET
RO
0
RESET Signaling
Value Description
0 RESET signaling is not present on the bus.
1 RESET signaling is present on the bus.
1096
Texas Instruments-Production Data
June 12, 2014