Internet Data Sheet
HYS72T[128/256]00xHR–[3S/3.7/5]–A
Registered DDR2 SDRAM Modules
Ball No.
Name
Pin
Buffer
Function
Type Type
Other Pins
19, 55, 68, 102,
137, 138, 173, 220,
221
NC
NC
—
Not connected
195
77
ODT0
ODT1
NC
I
SSTL
SSTL
—
On-Die Termination Control 1:0
Note: 2-Ranks module
I
NC
Note: 1-Rank modules
TABLE 6
Abbreviations for Buffer Type
Abbreviation
Description
SSTL
CMOS
OD
Serial Stub Terminated Logic (SSTL_18)
CMOS Levels
Open Drain. The corresponding pin has 2 operational states, active low and tristate,
and allows multiple devices to share as a wire-OR.
TABLE 7
Abbreviations for Pin Type
Abbreviation
Description
I
Standard input-only pin. Digital levels.
Output. Digital levels.
I/O is a bidirectional input/output signal.
Input. Analog levels.
Power
O
I/O
AI
PWR
GND
NU
NC
Ground
Not Usable
Not Connected
Rev. 1.4, 2007-02
12
03062006-GD6J-14FP
QIMONDA [ QIMONDA AG ]
