LM3S5P3B Datasheet, PDF (881/1170 Pages) Texas Instruments – Stellaris® LM3S5P3B Microcontroller

Stellaris^® LM3S5P3B Microcontroller
Register 10: USB Endpoint Index (USBEPIDX), offset 0x00E
Each endpoint's buffer can be accessed by configuring a FIFO size and starting address. The
USBEPIDX 8-bit register is used with the USBTXFIFOSZ, USBRXFIFOSZ, USBTXFIFOADD, and
USBRXFIFOADD registers.
USB Endpoint Index (USBEPIDX)
Base 0x4005.0000
Offset 0x00E
Type R/W, reset 0x00
7
6
5
4
3
2
1
0
reserved
EPIDX
Type RO
RO
RO
RO
R/W
R/W
R/W
R/W
Reset
0
0
0
0
0
0
0
0
Bit/Field
7:4
3:0
Name
reserved
EPIDX
Type
RO
R/W
Reset
0x0
0x0
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.
Endpoint Index
This bit field configures which endpoint is accessed when reading or
writing to one of the USB controller's indexed registers. A value of 0x0
corresponds to Endpoint 0 and a value of 0xF corresponds to Endpoint
15.
January 20, 2012
881
Texas Instruments-Production Data