ATSAMS70Q21B SCnSCB registers

The 2 registers of SCnSCB (System control not in SCB), from 0xE000E004, with their reset value and every field. The ATSAMS70Q21B has 2655 registers in 64 peripherals, one page each.

SCnSCB System control not in SCB

ICTRInterrupt Controller Type Register

Address
0xE000E004
Reset
0x00000000
Access
read only
Size
32-bit
1 field
FieldBitsWhat it does
INTLINESNUM3:0Total number of interrupt lines supported by an implementation, defined in groups of 32

ACTLRAuxiliary Control Register

Address
0xE000E008
Reset
0x00000000
Access
read/write
Size
32-bit
12 fields
FieldBitsWhat it does
DISFPUISSOPT28Disables dynamic allocation of ADD and SUB instructions
DISCRITAXIRUW27Disable critical AXI read-under-write
DISDYNADD26Disables dynamic allocation of ADD and SUB instructions
DISISSCH125:21
DISDI20:16
DISCRITAXIRUR15
DISBTACALLOC14
DISBTACREAD13
DISITMATBFLUSH12Disables ITM and DWT ATB flush
DISRAMODE11Disables dynamic read allocate mode for Write-Back Write-Allocate memory regions
FPEXCODIS10Disables FPU exception outputs
DISFOLD2Disables folding of IT instructions