These are JEDEC reserved bits
and are recommended by JEDEC to be programmed to ‘0’.
Bits 3:0 – RL/WL[3:0] Read and Write
Latency
Valid values are as
follows. All other settings are reserved and must not be used.
Value
Description
1
RL = 3
/WL = 1
2
RL = 4
/ WL = 2
3
RL = 5
/ WL = 2
4
RL = 6
/ WL = 3
5
RL = 7
/ WL = 4
6
RL = 8
/ WL = 4
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