EDJ1108BABG, EDJ1116BABG
Write Leveling Mode Exit
The following sequence describes how the Write Leveling Mode should be exited:
1. After the last rising strobe edge(see T111), stop driving the strobe signals (see ~T128). Note: From now on, DQ
pins are in undefined driving mode, and will remain undefined, until tMOD after the respective MR command
(T145).
2. Drive ODT pin low (tIS must be satisfied) and continue registering low (see T128).
3. After the RTT is switched off: disable Write Level Mode via MR command (see T132).
4. After tMOD is satisfied (T145), any valid commands may be registered. (MR commands may already be issued
after tMRD (T136).
T111
T112
T116
T117
T128 T131
T132
T136
MRS
T145
Valid
CK, /CK
Command
WL_off
1
tMOD
BA
Valid
VVaalidlid
tIS
tMRD
ODT
tODTL_off
RTT_DQS-/DQS
DQS-/DQS
RTT_DQ
tWLO + tWLOE
DQ
Result = 1
Timing Details Write leveling Exit
Data Sheet E1248E40 (Ver. 4.0)
86
ELPIDA [ ELPIDA MEMORY ]
