W9725G6KB
11.31 Clock frequency change in precharge Power Down mode
T0
T1
T2
T4
T X
T X+1
T Y
T Y+1
T Y+2
T Y+3
T Y+4
T z
CLK
CLK
CMD
NOP
NOP
NOP
NOP
DLL
RESET
NOP
Valid
CKE
200 Clocks
t IS
Frequency change
t IS
Occurs here
ODT
t RP
t IH
t AOFD
Minimum 2 clocks
required before
changing frequency
Stable new clock
t XP
ODT is off during
DLL RESET
before power down exit
Publication Release Date: Sep. 03, 2012
- 85 -
Revision A03
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