Datasheet

Table 87: Synchronous ODT Parameters
Symbol Description Begins at Defined to
Definition for All
DDR3L Speed Bins
Unit
ODTLon ODT synchronous turn-on delay ODT registered HIGH R
TT(ON)
±
t
AON CWL + AL - 2
t
CK
ODTLoff ODT synchronous turn-off delay ODT registered HIGH R
TT(OFF)
±
t
AOF CWL +AL - 2
t
CK
ODTH4 ODT minimum HIGH time after ODT
assertion or WRITE (BC4)
ODT registered HIGH or write regis- tration with ODT HIGH
ODT registered LOW 4
t
CK
t
CK
ODTH8 ODT minimum HIGH time after WRITE
(BL8)
Write registration with ODT HIGH ODT registered LOW 6
t
CK
t
CK
t
AON ODT turn-on relative to ODTLon
completion
Completion of ODTLon R
TT(ON)
See Electrical Charac-
teristics and AC Oper-
ating Conditions ta-
ble
ps
t
AOF ODT turn-off relative to ODTLoff
completion
Completion of ODTLoff R
TT(OFF)
0.5
t
CK ± 0.2
t
CK
t
CK
Figure 112: Synchronous ODT
T0 T1 T2 T3 T4 T5 T6 T7 T8 T9
CWL - 2AL = 3AL = 3
t
AON (MAX)
t
AOF (MAX)
T10 T11 T12 T13 T14 T15
CK
CK#
R
TT
ODT
Don’t CareTransitioning
R
TT,nom
CKE
t
AOF (MIN)
ODTLoff = CWL + AL - 2
ODTLon = CWL + AL - 2
ODTH4 (MIN)
t
AON (MIN)
Note:
1. AL = 3; CWL = 5; ODTLon = WL = 6.0; ODTLoff = WL - 2 = 6. R
TT,nom
is enabled.
8Gb: x4, x8, x16 DDR3L SDRAM
Synchronous ODT Mode
196
Rev.2.0 June 2016
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