INIT3 (DDRC) Register

Zynq UltraScale+ Devices Register Reference (UG1087)

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

INIT3 (DDRC) Register Description

Register NameINIT3
Offset Address0x00000000DC
Absolute Address 0x00FD0700DC (DDRC)
Width32
TyperwNormal read/write
Reset Value0x00000510
DescriptionSDRAM Initialization Register 3

INIT3 (DDRC) Register Bit-Field Summary

Field NameBitsTypeReset ValueDescription
mr31:16rwNormal read/write0x0DDR3/DDR4: Value loaded into MR0 register.
LPDDR3/LPDDR4 - Value to write to MR1 register
Programming Mode: Quasi-dynamic Group 1 and Group 4
emr15:0rwNormal read/write0x510DDR3/DDR4: Value to write to MR1 register
Set bit 7 to 0.
If PHY-evaluation mode training is enabled, this bit is set appropriately by the DDRC during write leveling.
LPDDR3/LPDDR4 - Value to write to MR2 register
Programming Mode: Quasi-dynamic Group 4