Raspberry Pi /RP2350 /ACCESSCTRL /UART1

Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text Text

Interpret as UART1

31 2827 2423 2019 1615 1211 87 43 0 0 0 0 0 0 0 0 00 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 (NSU)NSU 0 (NSP)NSP 0 (SU)SU 0 (SP)SP 0 (CORE0)CORE0 0 (CORE1)CORE1 0 (DMA)DMA 0 (DBG)DBG

Description

Control whether debugger, DMA, core 0 and core 1 can access UART1, and at what security/privilege levels they can do so.

Defaults to Secure access from any master.

This register is writable only from a Secure, Privileged processor or debugger, with the exception of the NSU bit, which becomes Non-secure-Privileged-writable when the NSP bit is set.

Fields

NSU

If 1, and NSP is also set, UART1 can be accessed from a Non-secure, Unprivileged context.

This bit is writable from a Non-secure, Privileged context, if and only if the NSP bit is set.

NSP

If 1, UART1 can be accessed from a Non-secure, Privileged context.

SU

If 1, and SP is also set, UART1 can be accessed from a Secure, Unprivileged context.

SP

If 1, UART1 can be accessed from a Secure, Privileged context.

CORE0

If 1, UART1 can be accessed by core 0, at security/privilege levels permitted by SP/NSP/SU/NSU in this register.

CORE1

If 1, UART1 can be accessed by core 1, at security/privilege levels permitted by SP/NSP/SU/NSU in this register.

DMA

If 1, UART1 can be accessed by the DMA, at security/privilege levels permitted by SP/NSP/SU/NSU in this register.

DBG

If 1, UART1 can be accessed by the debugger, at security/privilege levels permitted by SP/NSP/SU/NSU in this register.

Links

() ()