1*b35ce0c4SPankaj GuptaTable for dynamic ODT for DDR4 with PHY generation 2 2*b35ce0c4SPankaj Gupta==================================================== 3*b35ce0c4SPankaj GuptaTwo-slot system 4*b35ce0c4SPankaj GuptaOnly symmetric configurations are supported for interleaving. Non-symmetric 5*b35ce0c4SPankaj Guptaconfigurations are possible but not covered here. First slot empty is possbile 6*b35ce0c4SPankaj Guptabut prohibited for simplicity. 7*b35ce0c4SPankaj Gupta+-----------------------+-------------+---------------+-----------------------------+-----------------------------+ 8*b35ce0c4SPankaj Gupta| Configuration | |DRAM controller| Slot 1 | Slot 2 | 9*b35ce0c4SPankaj Gupta+-----------+-----------+-------------+-------+-------+--------------+--------------+--------------+--------------+ 10*b35ce0c4SPankaj Gupta| | | | | | Rank 1 | Rank 2 | Rank 1 | Rank 2 | 11*b35ce0c4SPankaj Gupta| Slot 1 | Slot 2 | Write/Read | Write | Read |-------+------+-------+------+-------+------+-------+------+ 12*b35ce0c4SPankaj Gupta| | | | | | Write | Read | Write | Read | Write | Read | Write | Read | 13*b35ce0c4SPankaj Gupta+-----------+-----------+------+------+-------+-------+-------+------+-------+------+-------+------+-------+------+ 14*b35ce0c4SPankaj Gupta| | | |Rank 1| off | 60 | 240 | off | 60 | 240 | 60 | 60 | 60 | 60 | 15*b35ce0c4SPankaj Gupta| | |Slot 1|------+-------+-------+-------+------+-------+------+-------+------+-------+------+ 16*b35ce0c4SPankaj Gupta| | | |Rank 2| off | 60 | 60 | 240 | 240 | off | 60 | 60 | 60 | 60 | 17*b35ce0c4SPankaj Gupta| Dual Rank | Dual Rank |------+------+-------+-------+-------+------+-------+------+-------+------+-------+------+ 18*b35ce0c4SPankaj Gupta| | | |Rank 1| off | 60 | 60 | 60 | 60 | 60 | 240 | off | 60 | 240 | 19*b35ce0c4SPankaj Gupta| | |Slot 2|------+-------+-------+-------+------+-------+------+-------+------+-------+------+ 20*b35ce0c4SPankaj Gupta| | | |Rank 2| off | 60 | 60 | 60 | 60 | 60 | 60 | 240 | 240 | off | 21*b35ce0c4SPankaj Gupta+-----------+-----------+------+------+-------+-------+-------+------+-------+------+-------+------+-------+------+ 22*b35ce0c4SPankaj Gupta| | | Slot 1 | off | 60 | 80 | off | | | | | | | 23*b35ce0c4SPankaj Gupta|Single Rank|Single Rank|-------------+-------+-------+-------+------+-------+------+-------+------+-------+------+ 24*b35ce0c4SPankaj Gupta| | | Slot 2 | off | 60 | | | | | 80 | off | 25*b35ce0c4SPankaj Gupta+-----------+-----------+------+------+-------+-------+-------+------+-------+------+-------+------+ 26*b35ce0c4SPankaj Gupta| | | |Rank 1| off | 80 | 80 | off | off | off | 27*b35ce0c4SPankaj Gupta| Dual Rank | |Slot 1|------+-------+-------+-------+------+-------+------+ 28*b35ce0c4SPankaj Gupta| | | |Rank 2| off | 80 | 80 | off | off | off | 29*b35ce0c4SPankaj Gupta+-----------+-----------+-------------+-------+-------+-------+------+-------+------+ 30*b35ce0c4SPankaj Gupta|Single Rank| | Slot 1 | off | 80 | 80 | off | 31*b35ce0c4SPankaj Gupta+-----------+-----------+-------------+-------+-------+-------+------+ 32