ISD94100 Series Technical Reference Manual
Sep 9, 2019
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Rev1.09
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USB SETUP Token Buffer Segmentation Register (USBD_STBUFSEG)
Register
Offset
R/W Description
Reset Value
USBD_STBUFSEG
0x018
R/W SETUP Token Buffer Segmentation
Register
0x0000_0000
31
30
29
28
27
26
25
24
Reserved
23
22
21
20
19
18
17
16
Reserved
15
14
13
12
11
10
9
8
Reserved
STBUFSEG
7
6
5
4
3
2
1
0
STBUFSEG
Reserved
Bits
Description
[31:9]
Reserved
Reserved. Any values read should be ignored. When writing to this field always write with
reset value.
[8:3]
STBUFSEG
SETUP Token Buffer Segmentation
It is used to indicate the offset address for the SETUP token with the USB Device SRAM
starting address The effective starting address is
USBD_SRAM a {STBUFSEG, 3’b000}
Where the USBD_SRAM address = 0x100h.
Note:
It is used for SETUP token only.
[2:0]
Reserved
Reserved. Any values read should be ignored. When writing to this field always write with
reset value.
