Table 3-23 APBSPPPCEXP1 Register bit assignments (continued)
Bits
Name
Function
[1]
S_UART1
Defines the Secure access setting for UART1:
0b0
: Secure Privileged access only.
0b1
: Secure Unprivileged and Privileged
access.
Reset value
0b0
.
[0]
S_UART0
Defines the Secure access setting for UART0:
0b0
: Secure Privileged access only.
0b1
: Secure Unprivileged and Privileged
access.
Reset value
0b0
.
3.4.7
Non-secure Privilege Control Block
The Non-secure Privilege Control Block implements program-visible states that enable software to
control various security gating units within the design.
The base memory address of the Non-secure Privilege Control Block is
0x4008_0000
.
Writes to the registers must be 32 bits wide. Attempted byte and halfword writes are ignored.
Reads and writes are supported only from Non
‑
secure Privileged access.
See the
Arm
®
CoreLink
™
SSE
‑
200 Subsystem for Embedded Technical Reference Manual (r1p0)
for more
information.
The following table shows the registers in address offset order from the base memory address. Undefined
registers are reserved. Software must not attempt to access these registers.
Table 3-24 Non-secure Privilege Control Block registers
Offset
Name
Type Reset value
Function
0x00A0
AHBNSPPPCEXP0 RW
0x0000_0000
Expansion 0 Non
‑
secure Unprivileged Access AHB slave Peripheral
Protection Control.
Used in SW workaround for hardware bug in another register. See
Secure and Non-secure privilege registers hardware bug
See
register is implemented in the Musca
‑
S1 test chip.
0x00B0
APBNSPPPC0
RW
0x0000_0000
Non
‑
secure Unprivileged Access APB slave Peripheral Protection Control 0.
See the
Arm
®
CoreLink
™
SSE
‑
200 Subsystem for Embedded Technical
Reference Manual (r1p0)
for more information.
0x00B4
APBNSPPPC1
RW
0x0000_0000
Non
‑
secure Unprivileged Access APB slave Peripheral Protection Control 1.
See the
Arm
®
CoreLink
™
SSE
‑
200 Subsystem for Embedded Technical
Reference Manual (r1p0)
for more information.
3 Programmers model
3.4 Base element
101835_0000_01_en
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