DFITMG2 (DDRC) Register

Zynq UltraScale+ Devices Register Reference (UG1087)

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

DFITMG2 (DDRC) Register Description

Register NameDFITMG2
Offset Address0x00000001B4
Absolute Address 0x00FD0701B4 (DDRC)
Width32
TyperwNormal read/write
Reset Value0x00000202
DescriptionDFI Timing Register 2

This register is quasi-dynamic group 2 and group 4. Group 2 registers can be written in self-refresh, deep power-down, and maximum power saving modes. Group 4 registers can be written depending on MSTR.frequency_mode.

DFITMG2 (DDRC) Register Bit-Field Summary

Field NameBitsTypeReset ValueDescription
dfi_tphy_rdcslat13:8rwNormal read/write0x2>Number of clocks between when a read command is sent on the DFI control interface
and when the associated dfi_rddata_cs signal is asserted. This corresponds to the DFI timing parameter tphy_rdcslat.
This should be set to dfi_t_rddata_en - 2.
dfi_tphy_wrcslat 5:0rwNormal read/write0x2Number of clocks between when a write command is sent on the DFI control interface and when the associated dfi_wrdata_cs signal is asserted. This corresponds to the DFI timing parameter tphy_wrcslat.
For non-RDIMM systems, this should be set to dfi_tphy_wrlat-5.
For RDIMM systems, this should be set to 2.