Intel N475 AU80610006240AA User Manual
Product codes
AU80610006240AA
Electrical Specifications
46
Datasheet
4.10.2
Interface DC Specifications
Platform reference voltages at the top of
are specified at DC only. V
REF
measurements should be made with respect to the supply voltage.
4.10.2.1
Input Clock DC Specification
NOTES:
1.
1.
Unless otherwise noted, all specifications in this table apply to all processor frequencies.
2.
Crossing voltage defined as instantaneous voltage when rising edge of CLKN equalise
CLKP. The crossing point must meet the absolute and relative crossing point specification
simultaneously.
CLKP. The crossing point must meet the absolute and relative crossing point specification
simultaneously.
4.10.2.2
DDR2 DC Specifications
Table 4-23.Input Clocks (BCLK, HPL_CLKIN, REFCLKIN, EXP_CLKIN) Differential
Specification
Symbol
Parameter
Min
Typ
Max
Units
Notes
1
V
IL
Input Low Voltage
-0.30
0
V
V
IH
Input High Voltage
1.15
V
V
CROSS
Absolute crossing
voltage
voltage
0.3
0.550
V
2
dV
CROSS
Range of crossing points
0.14
V
C
IN
Input Capacitance
1.0
3.0
pF
Table 4-24.DDR2 Signal Group DC Specifications
Symbol
Parameter
Min (V)
Typ (V)
Max (V)
Units
No
tes
1
V
IL
(DC)
Input Low
Voltage
Voltage
DDR_VREF - 0.2
V
2,4,7
V
IH
(DC)
Input High
Voltage
Voltage
DDR_VREF + 0.2
V
3,7
V
IL
(AC)
Input Low
Voltage
Voltage
DDR_VREF - 0.25
V
2,4,7
V
IH
(AC)
Input High
Voltage
Voltage
DDR_VREF + 0.25
V
3,10
V
OL
Output Low
Voltage
Voltage
0.24
0.26
0.27
4
V
OH
Output High
Voltage
Voltage
1.47
1.54
1.62
V
4
R
ON
DDR2 Clock
Buffer On
Resistance
Buffer On
Resistance
22
Ω
5