MT41J128M8 MDTIC [Micon Design Technology Corporation], MT41J128M8 Datasheet - Page 172

• Manufacturer Part Number: MT41J128M8
• Description: 1Gb: x4, x8, x16 DDR3 SDRAM
• Manufacturer: MDTIC [Micon Design Technology Corporation]

Asynchronous ODT Mode
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1Gb_DDR3_5.fm - Rev. D 8/1/08 EN
Asynchronous ODT mode is available when the DRAM runs in DLL on mode and when
either R
precharged power-down standby (via MR0[12]). Additionally, ODT operates asynchro-
nously when the DLL is synchronizing after being reset. See "Power-Down Mode" on
page 151 for definition and guidance over power-down details.
In asynchronous ODT timing mode, the internal ODT command is not delayed by AL
relative to the external ODT command. In asynchronous ODT mode, ODT controls R
by analog time. The timing parameters
replace ODTL on/
chronously (see Figure 119 on page 173).
The minimum R
nation circuit leaves High-Z and ODT resistance begins to turn on. Maximum R
on time (
and
The minimum R
nation circuit starts to turn off ODT resistance. Maximum R
[MAX]) is the point at which ODT has reached High-Z.
(MAX) are measured from ODT being sampled LOW.
t
AONPD (MAX) are measured from ODT being sampled HIGH.
TT
t
AONPD [MAX]) is the point at which ODT resistance is fully on.
_
NOM
or R
TT
TT
t
AON and ODTL off/
turn-on time (
turn-off time (
TT
_
WR
is enabled; however, the DLL is temporarily turned off in
172
t
t
AONPD [MIN]) is the point at which the device termi-
AOFPD [MIN]) is the point at which the device termi-
t
Micron Technology, Inc., reserves the right to change products or specifications without notice.
t
AOF, respectively, when ODT operates asyn-
AONPD and
1Gb: x4, x8, x16 DDR3 SDRAM
t
AOFPD (see Table 82 on page 173)
On-Die Termination (ODT)
t
AOFPD (MIN) and
TT
turn-off time (
©2006 Micron Technology, Inc. All rights reserved.
t
AONPD (MIN)
t
AOFPD
t
AOFPD
TT
turn-
TT