HYB18T512xxxBF–[2.5…5]
512-Mbit Double-Data-Rate-Two SDRAM
ODT Truth Tables
The ODT Truth Table shows which of the input pins are organisations (×4, ×8 and ×16). To activate termination
terminated depending on the state of address bit A10 of any of these pins, the ODT function has to be
and A11 in the EMRS(1) for all three device enabled in the EMRS(1) by address bits A6 and A2.
Table 14
Input Pin
ODT Truth Table
EMRS(1)
EMRS(1)
Address Bit A10
Address Bit A11
x4 components
DQ[3:0]
DQS
X
X
0
DQS
X
DM
X
x8 components
DQ[7:0]
DQS
X
X
0
DQS
X
1
1
0
RDQS
X
0
RDQS
DM
X
x16 components
DQ[7:0]
DQ[15:8]
LDQS
X
X
X
0
LDQS
X
X
UDQS
X
0
UDQS
LDM
X
X
UDM
Note:X = don’t care; 0 = bit set to low; 1 = bit set to high
Internet Data Sheet
21
Rev. 1.05, 2007-01
03292006-YBYM-WG0Z
QIMONDA [ QIMONDA AG ]
