Table for dynamic ODT for DDR4 with PHY generation 2
====================================================
Two-slot system
Only symmetric configurations are supported for interleaving. Non-symmetric
configurations are possible but not covered here. First slot empty is possbile
but prohibited for simplicity.
+-----------------------+-------------+---------------+-----------------------------+-----------------------------+
| Configuration | |DRAM controller| Slot 1 | Slot 2 |
+-----------+-----------+-------------+-------+-------+--------------+--------------+--------------+--------------+
| | | | | | Rank 1 | Rank 2 | Rank 1 | Rank 2 |
| Slot 1 | Slot 2 | Write/Read | Write | Read |-------+------+-------+------+-------+------+-------+------+
| | | | | | Write | Read | Write | Read | Write | Read | Write | Read |
+-----------+-----------+------+------+-------+-------+-------+------+-------+------+-------+------+-------+------+
| | | |Rank 1| off | 60 | 240 | off | 60 | 240 | 60 | 60 | 60 | 60 |
| | |Slot 1|------+-------+-------+-------+------+-------+------+-------+------+-------+------+
| | | |Rank 2| off | 60 | 60 | 240 | 240 | off | 60 | 60 | 60 | 60 |
| Dual Rank | Dual Rank |------+------+-------+-------+-------+------+-------+------+-------+------+-------+------+
| | | |Rank 1| off | 60 | 60 | 60 | 60 | 60 | 240 | off | 60 | 240 |
| | |Slot 2|------+-------+-------+-------+------+-------+------+-------+------+-------+------+
| | | |Rank 2| off | 60 | 60 | 60 | 60 | 60 | 60 | 240 | 240 | off |
+-----------+-----------+------+------+-------+-------+-------+------+-------+------+-------+------+-------+------+
| | | Slot 1 | off | 60 | 80 | off | | | | | | |
|Single Rank|Single Rank|-------------+-------+-------+-------+------+-------+------+-------+------+-------+------+
| | | Slot 2 | off | 60 | | | | | 80 | off |
+-----------+-----------+------+------+-------+-------+-------+------+-------+------+-------+------+
| | | |Rank 1| off | 80 | 80 | off | off | off |
| Dual Rank | |Slot 1|------+-------+-------+-------+------+-------+------+
| | | |Rank 2| off | 80 | 80 | off | off | off |
+-----------+-----------+-------------+-------+-------+-------+------+-------+------+
|Single Rank| | Slot 1 | off | 80 | 80 | off |
+-----------+-----------+-------------+-------+-------+-------+------+
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