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Table 4-7 SYS_SW Register bit assignments (continued)
Bits
Name
Function
[27:8]
-
Reserved. If you write to this register,
you must write all zeros to these bits. If
you read this register, you must ignore
these bits.
[7:0]
Soft user switch.
Application software can read these
switch settings. If SYS[0] =
0b1
, the
Boot Monitor runs its bootscript at
powerup.
Related concepts
4.3.1 APB system register summary
4.3.4
SYS_LED Register
The SYS_LED Register characteristics are:
Purpose
Controls the eight user LEDs on the V2M-Juno r2 motherboard. All LEDs are turned OFF at
reset. The Boot Monitor updates the LED value.
Usage constraints
There are no usage constraints.
Configurations
Available in all V2M-Juno r2 motherboard configurations.
The following figure shows the bit assignments.
31
8
0
Reserved
7
LED[7:0]
Figure 4-6 SYS_LED Register bit assignments
The following table shows the bit assignments.
Table 4-8 SYS_LED Register bit assignments
Bits
Name
Function
[31:8]
-
Reserved. If you write to this register,
you must write all zeros to these bits. If
you read this register, you must ignore
these bits.
[7:0]
LED[7:0]
Set or read the user LED states:
0b0
OFF.
0b1
ON.
Related concepts
4.3.1 APB system register summary
4.3.5
SYS_100HZ Register
The SYS_100HZ Register characteristics are:
4 Programmers Model
4.3 APB system registers
ARM 100114_0200_03_en
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