1*91f16700SchasingluluTable for dynamic ODT for DDR4 with PHY generation 2 2*91f16700Schasinglulu==================================================== 3*91f16700SchasingluluTwo-slot system 4*91f16700SchasingluluOnly symmetric configurations are supported for interleaving. Non-symmetric 5*91f16700Schasingluluconfigurations are possible but not covered here. First slot empty is possbile 6*91f16700Schasinglulubut prohibited for simplicity. 7*91f16700Schasinglulu+-----------------------+-------------+---------------+-----------------------------+-----------------------------+ 8*91f16700Schasinglulu| Configuration | |DRAM controller| Slot 1 | Slot 2 | 9*91f16700Schasinglulu+-----------+-----------+-------------+-------+-------+--------------+--------------+--------------+--------------+ 10*91f16700Schasinglulu| | | | | | Rank 1 | Rank 2 | Rank 1 | Rank 2 | 11*91f16700Schasinglulu| Slot 1 | Slot 2 | Write/Read | Write | Read |-------+------+-------+------+-------+------+-------+------+ 12*91f16700Schasinglulu| | | | | | Write | Read | Write | Read | Write | Read | Write | Read | 13*91f16700Schasinglulu+-----------+-----------+------+------+-------+-------+-------+------+-------+------+-------+------+-------+------+ 14*91f16700Schasinglulu| | | |Rank 1| off | 60 | 240 | off | 60 | 240 | 60 | 60 | 60 | 60 | 15*91f16700Schasinglulu| | |Slot 1|------+-------+-------+-------+------+-------+------+-------+------+-------+------+ 16*91f16700Schasinglulu| | | |Rank 2| off | 60 | 60 | 240 | 240 | off | 60 | 60 | 60 | 60 | 17*91f16700Schasinglulu| Dual Rank | Dual Rank |------+------+-------+-------+-------+------+-------+------+-------+------+-------+------+ 18*91f16700Schasinglulu| | | |Rank 1| off | 60 | 60 | 60 | 60 | 60 | 240 | off | 60 | 240 | 19*91f16700Schasinglulu| | |Slot 2|------+-------+-------+-------+------+-------+------+-------+------+-------+------+ 20*91f16700Schasinglulu| | | |Rank 2| off | 60 | 60 | 60 | 60 | 60 | 60 | 240 | 240 | off | 21*91f16700Schasinglulu+-----------+-----------+------+------+-------+-------+-------+------+-------+------+-------+------+-------+------+ 22*91f16700Schasinglulu| | | Slot 1 | off | 60 | 80 | off | | | | | | | 23*91f16700Schasinglulu|Single Rank|Single Rank|-------------+-------+-------+-------+------+-------+------+-------+------+-------+------+ 24*91f16700Schasinglulu| | | Slot 2 | off | 60 | | | | | 80 | off | 25*91f16700Schasinglulu+-----------+-----------+------+------+-------+-------+-------+------+-------+------+-------+------+ 26*91f16700Schasinglulu| | | |Rank 1| off | 80 | 80 | off | off | off | 27*91f16700Schasinglulu| Dual Rank | |Slot 1|------+-------+-------+-------+------+-------+------+ 28*91f16700Schasinglulu| | | |Rank 2| off | 80 | 80 | off | off | off | 29*91f16700Schasinglulu+-----------+-----------+-------------+-------+-------+-------+------+-------+------+ 30*91f16700Schasinglulu|Single Rank| | Slot 1 | off | 80 | 80 | off | 31*91f16700Schasinglulu+-----------+-----------+-------------+-------+-------+-------+------+ 32