Configurations
Available in all N1 board configurations.
Memory offset and full register reset value
See
4.6.1 APB system register summary
The following table shows the bit assignments.
Table 4-127 SYS_SW Register bit assignments
Bits
Name
Type
Function
[31:30] -
-
Reserved.
[29]
nUART0CTS
RO
UART0 CTS signal.
[28]
nUART0DSR
RO
UART0 DSR signal.
[27:8]
-
-
Reserved.
[7:0]
HARDWARE_USER_SW.
RW
State of the 8 user DIP switches on the board.
Application software can read these switch
settings:
0b0
: OFF.
0b1
: ON.
4.6.4
SYS_LED Register
The SYS_LED Register characteristics are:
Purpose
Controls the eight user LEDs on the N1 SDP. 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 N1 board configurations.
Memory offset and full register reset value
See
4.6.1 APB system register summary
The following table shows the bit assignments.
Table 4-128 SYS_LED Register bit assignments
Bits
Name
Type
Function
[31:8]
-
-
Reserved.
[7:0]
LED[7:0]
RW
Set or read the user LED states:
0b0
: OFF.
0b1
: ON.
4.6.5
SYS_100HZ Register
The SYS_100HZ Register characteristics are:
4 Programmers model
4.6 APB system registers
101489_0000_02_en
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