LM3S3748 Datasheet, PDF (543/753 Pages) List of Unclassifed Manufacturers – Microcontroller

LM3S3748 Microcontroller
Register 32: USB Transmit Hub Port Endpoint 0 (USBTXHUBPORT0), offset
0x083
Register 33: USB Transmit Hub Port Endpoint 1 (USBTXHUBPORT1), offset
0x08B
Register 34: USB Transmit Hub Port Endpoint 2 (USBTXHUBPORT2), offset
0x093
Register 35: USB Transmit Hub Port Endpoint 3 (USBTXHUBPORT3), offset
0x09B
Host
USBTXHUBPORTn is an 8-bit read/write register that, like USBTXHUBADDRn, only needs to be
written when a full- or low-speed device is connected to transmit endpoint EPn via a high-speed
USB 2.0 hub. This register provides the necessary transaction translation to convert between
high-speed transmission and full-/low-speed transmission. This register records the port of that USB
2.0 hub through which the target associated with the endpoint is accessed. This information, together
with the hub address in USBTXHUBADDRn, allows the USB controller to support split transactions.
Note: USBTXHUBPORT0 is used for both receive and transmit for endpoint 0.
USB Transmit Hub Port Endpoint 0 (USBTXHUBPORT0)
Base 0x4005.0000
Offset 0x083
Type R/W, reset 0x00
7
6
5
4
3
2
1
0
reserved
PORT
Type RO
Reset
0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
0
0
0
0
0
0
0
Bit/Field
7
6:0
Name
reserved
PORT
Type
RO
R/W
Reset
0
0x00
Description
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.
Hub Port
USB hub port number.
April 08, 2008
543
Preliminary