Vtt Static And Transient Tolerance Load Line; Vtt Static And Transient Tolerance; Ddr3 Signal Group Dc Specifications - Intel Xeon 3500 Series Datasheet

Electrical Specifications
Figure 2-4. V Static and Transient Tolerance Load Line
TT
0.0500
0.0375
0.0250
0.0125
0.0000
V
-0.0125
t
-0.0250
t
-0.0375
V
-0.0500
-0.0625
-0.0750
-0.0875
-0.1000
-0.1125
-0.1250
-0.1375
-0.1500
-0.1625
-0.1750
-0.1875
-0.2000
-0.2125
Table 2-11. DDR3 Signal Group DC Specifications
Symbol
V
IL
V
IH
V
OL
V
OH
R
ON
R
ON
R
ON
R
ON
R
ON
I
LI
DDR_COMP0
DDR_COMP1
DDR_COMP2
Notes:
1. Unless otherwise noted, all specifications in this table apply to all processor frequencies.
2. V is defined as the maximum voltage level at a receiving agent that will be interpreted as a logical low
IL
value.
3. V is defined as the minimum voltage level at a receiving agent that will be interpreted as a logical high
IH
value.
Intel® Xeon® Processor 3500 Series Datasheet Volume 1
0 5
Vtt Typical
Vtt Minimum
Parameter Min
Input Low Voltage
Input High Voltage 0.57*V
Output Low Voltage
Output High Voltage
DDR3 Clock Buffer On
Resistance
DDR3 Command Buffer
On Resistance
DDR3 Reset Buffer On
Resistance
DDR3 Control Buffer On
Resistance
DDR3 Data Buffer On
Resistance
Input Leakage Current N/A
COMP Resistance
COMP Resistance 24.65
COMP Resistance 128.7
Itt [A] (sum of Itta and Ittd)
10 15
Vtt Maximum
Typ
—
—
DDQ
(V / 2)* (R /
DDQ ON
—
(R +R ))
ON VTT_TERM
V – ((V / 2)*
— DDQ DDQ
(R /(R +R
ON ON VTT_TERM
21 —
16 —
25 —
21 —
21 —
N/A
99 100
24.9
130
20 25
Max Units Notes
0.43*V V
DDQ
— V
— V
— V
))
31 Ω
24 Ω
75 Ω
31 Ω
31 Ω
± 1 mA
101 Ω
25.15 Ω
131.30 Ω
1
2,4
3
4
5
5
5
27