RIOCR4 (DDR_PHY) Register

Zynq UltraScale+ Devices Register Reference (UG1087)

Document ID
UG1087
Release Date
2024-03-13
Revision
1.10

RIOCR4 (DDR_PHY) Register Description

Register NameRIOCR4
Offset Address0x00000004F0
Absolute Address 0x00FD0804F0 (DDR_PHY)
Width32
TypemixedMixed types. See bit-field details.
Reset Value0x00000005
DescriptionRank I/O Configuration Register 4

RIOCR4 (DDR_PHY) Register Bit-Field Summary

Field NameBitsTypeReset ValueDescription
Reserved31:16roRead-only0x0Reserved. Return zeroes on reads.
CKEOEMODE_RSVD15:4roRead-only0x0Reserved. Return zeros on reads.
CKEOEMODE 3:0rwNormal read/write0x5SDRAM CKE Output Enable (OE) Mode Selection. Bits [1:0] for
CKE[0], bits [3:2] for CKE[1]. Valid values are:
2b00 = OE Dynamic
2b01 = OE always ON
2b10 = OE always OFF
2b11 = Reserved