82845MP Datasheet, PDF (130/157 Pages) Intel Corporation – Intel 845 Family Chipset-Mobile 82845MP/82845MZ Chipset Memory Controller Hub Mobile (MCH-M)

Intel^®82845MP/82845MZ Chipset-Mobile (MCH-M)
R
8. DC Characteristics
Table 38. DC Characteristics
Symbol Signal
Group
Parameter
Min
Nom
Max
Unit
Notes
I/O Buffer Supply Voltage
VCCSM
(u) DDR I/O Supply Voltage
2.375
2.5
2.625
V
VCC1_8
(t) 1.8V I/O Supply Voltage
1.71
1.8
1.89
V
VCC1_5
(s) Core and AGP Voltage
1.425
1.5
1.575
V
VTT
(r) Host AGTL+ Termination
N/A
Voltage
N/A
1.75
V
VTTactive
(r) BK-M Active Range
1.0-5%
1.5+5%
VTTsleep
®
BK-M Inactive Range
0.85-2.5%
1.5+2.5%
Reference Voltages
HVREF
(d)
Host Address and Data
2/3 x VTT – 2%
2/3 x VTT
2/3 x VTT + 2%
V
Reference Voltage
HSWING
(d) Host Compensation
Reference Voltage
1/3 x VTT – 2%
1/3 x VTT
1/3 x VTT + 2%
V
HIREF
(j) Hub Interface Reference 0.48 x VCC1_8 1/2 x VCC1_8 0.52 x VCC1_8
V
Voltage
SDREF
(n) DDR Reference Voltage 0.48 x VCCSM 1/2 x VCCSM 0.52 x VCCSM
V
AGPREF
(h) AGP Reference Voltage 0.48 x VCC1_5 1/2 x VCC1_5 0.52 x VCC1_5
V
Host Interface
VIL_H
(a,c)
Host AGTL+ Input Low
Voltage
(2/3 x VTT) – 0.1
V
VIH_H
(a,c) Host AGTL+ Input High (2/3 x VTT) + 0.1
V
Voltage
VOL_H
(a,b) Host AGTL+ Output Low
Voltage
(1/3 x VTT) + 0.1
V
VOH_H
(a,b) Host AGTL+ Output High
VTT-0.1
V
Voltage
IOL_H
(a,b) Host AGTL+ Output Low
Current
VTTmax / 0.75Rttmin mA Rttmin=45Ω
ILEAK_H
(a,c)
Host AGTL+ Input
Leakage Current
±15
µA VOL<Vpad<
VTT
CPAD
(a,c)
Host AGTL+ Input
Capacitance
1.0
pF
DDR Interface
VIL(DC)
(k,m) DDR Input Low Voltage
SDREF – 0.15
V
130
Datasheet
250687-002