Zynq UltraScale+ Devices Register Reference > Module Summary > DDR_PHY Module > MR5 (DDR_PHY) Register

MR5 (DDR_PHY) Register

MR5 (DDR_PHY) Register Description

Register NameMR5
Relative Address0x0000000194
Absolute Address 0x00FD080194 (DDR_PHY)
Width32
TypemixedMixed types. See bit-field details.
Reset Value0x00000000
DescriptionLPDDR4 Mode Register 5

MR5 (DDR_PHY) Register Bit-Field Summary

Field NameBitsTypeReset ValueDescription
Reserved31:8roRead-only0x0Reserved. Return zeroes on reads.
RSVD 7:0rwNormal read/write0x0These are JEDEC reserved bits and are recommended by JEDEC to be programmed to 0x0.

Alternate Register MR5_DDR3, reset=0x400
Alternate Register Field: RSVD Offset=0 Width=16 read-write
[[*]] Description: These are JEDEC reserved bits and are recommended by JEDEC to be programmed to 0x0.
Alternate Register Field: RESERVED_31_16 Offset=16 Width=16 read-only
[[*]] Description: Reserved. Return zeroes on reads.
Alternate Register Field: CAPM Offset=0 Width=3 read-write
[[*]] Description: C/A Parity Latency Mode
Alternate Register Field: CRCEC Offset=3 Width=1 read-write
[[*]] Description: CRC Error Clear
Alternate Register Field: CAPES Offset=4 Width=1 read-write
[[*]] Description: C/A Parity Error Status
Alternate Register Field: ODTIBPD Offset=5 Width=1 read-write
[[*]] Description: ODT Input Buffer during Power Down mode
Alternate Register Field: RTTPARK Offset=6 Width=3 read-write
[[*]] Description: RTT_PARK
Alternate Register Field: CAPPE Offset=9 Width=1 read-write
[[*]] Description: CA Parity Persistent Error
Alternate Register Field: DM Offset=10 Width=1 read-write
[[*]] Description: Data Mask
Alternate Register Field: WDBI Offset=11 Width=1 read-write
[[*]] Description: Write DBI
Alternate Register Field: RDBI Offset=12 Width=1 read-write
[[*]] Description: Read DBI
Alternate Register Field: RSVD Offset=13 Width=3 read-write
[[*]] Description: These are JEDEC reserved bits and are recommended by JEDEC to be programmed to 0x0.
Alternate Register Field: RESERVED_31_16 Offset=16 Width=16 read-only
[[*]] Description: Reserved. Return zeroes on reads.
Alternate Register Field: RSVD Offset=0 Width=16 read-write
[[*]] Description: These are JEDEC reserved bits and are recommended by JEDEC to be programmed to 0x0.
Alternate Register Field: RESERVED_31_16 Offset=16 Width=16 read-only
[[*]] Description: Reserved. Return zeroes on reads.
Alternate Register Field: RSVD Offset=0 Width=16 read-write
[[*]] Description: These are JEDEC reserved bits and are recommended by JEDEC to be programmed to 0x0.
Alternate Register Field: RESERVED_31_16 Offset=16 Width=16 read-only
[[*]] Description: Reserved. Return zeroes on reads.