This register is used to perform read and write operations to the internal protection table.
Module Instance Base Address Register Address
sdr 0xFFC20000 0xFFC2509C

Offset: 0x509C

Access: RW

Important: To prevent indeterminate system behavior, reserved areas of memory must not be accessed by software or hardware. Any area of the memory map that is not explicitly defined as a register space or accessible memory is considered reserved.
Bit Fields
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16


15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0



RW 0x0


RW 0x0


RW 0x0

protrulerdwr Fields

Bit Name Description Access Reset
6 readrule

Write to this bit to have the memory_prot_data register loaded with the value from the internal protection table at offset. Table value will be loaded before a rdy is returned so read data from the register will be correct for any follow-on reads to the memory_prot_data register.

RW 0x0
5 writerule

Write to this bit to have the memory_prot_data register to the table at the offset specified by port_offset. Bit automatically clears after a single cycle and the write operation is complete.

RW 0x0
4:0 ruleoffset

This field defines which of the 20 rules in the protection table you want to read or write.

RW 0x0