Zynq UltraScale+ Devices Register Reference > Module Summary > XMPU_OCM Module > CTRL (XMPU_OCM) Register

CTRL (XMPU_OCM) Register

CTRL (XMPU_OCM) Register Description

Register NameCTRL
Relative Address0x0000000000
Absolute Address 0x00FFA70000 (OCM_XMPU_CFG)
Width32
TypemixedMixed types. See bit-field details.
Reset Value0x00000003
DescriptionControl and Implementation.

Read/Write permissions, poison method and region page size.

CTRL (XMPU_OCM) Register Bit-Field Summary

Field NameBitsTypeReset ValueDescription
Reserved31:4roRead-only0x0reserved
AlignCfg 3roRead-only0x0Region Alignment, value fixed at 0.
0: Aligned to 4kB page (12 address bits). Read-only.
PoisonCfg 2rwNormal read/write0x0Poisoning Method.
0: attribute poisoning; asserts the AxUser [10] poison signal to the OCM memory controller. The level is defined by the POISON [ATTRIB] bit.
1: reserved.
DefWrAllowed 1rwNormal read/write0x1Default Write Allowed. If a write transaction address and master ID miss in the Region List, then:
0: poison the transaction with a Write Permission Violation.
1: allowed the transaction, regardless of security level.
DefRdAllowed 0rwNormal read/write0x1Default Read Allowed. If a read transaction address and master ID miss in the Region List, then:
0: poison the transaction with a Read Permission Violation.
1: allowed the transaction, regardless of security level.