Arm wake-up register – Digi NS9750 User Manual
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B B u s U t i l i t y
ARM Wake-up register
Address: 9060 0090
The ARM Wake-up register contains the ARM wake-up word used only by Serial
Controller Interface #1. This pattern, when found as the next entry in the receive
FIFO, causes a wake-up signal to be asserted to the ARM.
Register bit assignment
D02
R/W
SerB
0
Serial controller port B
0
Little endian
1
Big endian
D01
R/W
USB
0
USB
0
Little endian
1
Big endian
This does not affect the USB DMA controller.
D00
R/W
DMA
Reset to the
value
provided on
strapping pin
gpio[44]
BBus DMA
0
Little endian
1
Big endian
This field controls both the general BBus DMA
controller and the USB DMA controller.
Bits
Access
Mnemonic
Reset
Description
Table 332: Endian Configuration register
Bits
Access
Mnemonic
Reset
Description
D31:00
R/W
WAKE
0x0000_0000
Defines the byte-wise match in order for the Serial
Controller to signal a wake-up to the ARM.
Table 333: ARM Wake-up register
13
12
11
10
9
8
7
6
5
4
3
2
1
0
15
14
31
29
28
27
26
25
24
23
22
21
20
19
18
17
16
30
WAKE
WAKE