MT41J128M16HA-125 Datasheet, PDF (168/206 Pages) Micron Technology – Differential bidirectional data strobe

Figure 84: WRITE (BC4 OTF) to READ (BC4 OTF)
CK#
CK
Command¹
T0
WRITE
Address³
Valid
DQS, DQS#
DQ⁴
T1
T2
T3
T4
T5
T6
T7
T8
T9
T10
T11
Tn
NOP
NOP
NOP
NOP
NOP
NOP
NOP
NOP
NOP
NOP
NOP
READ
t_{BL = 4 clocks}
t_WTR2
t_WPRE
t_WPST
Valid
WL = 5
DI
DI
DI
DI
n
n+1 n+2 n+3
Indicates break
in time scale
Transitioning Data
RL = 5
Don’t Care
Notes:
1. NOP commands are shown for ease of illustration; other commands may be valid at these times.
2. ^tWTR controls the WRITE-to-READ delay to the same device and starts after ^tBL.
3. The BC4 OTF setting is activated by MR0[1:0] = 01 and A12 = 0 during the WRITE command at T0 and the READ
command at Tn.
4. DI n = data-in for column n.
5. BC4, RL = 5 (AL = 0, CL = 5), WL = 5 (AL = 0, CWL = 5).