82801DB Datasheet, PDF (524/587 Pages) Intel Corporation – Intel 82801DB I/O Controller Hub 4 (ICH4)

Electrical Characteristics
Table 17-5. DC Output Characteristics
Symbol
Parameter
V_OL1
V_OH1
V_OL2
V_OH2
V_OL3
V_OH3
V_OL4
V_OH4
V_OL5
V_OH5
V_OL6
V_OH6
V_OL7
V_OH7
Output Low Voltage
Output High Voltage
Output Low Voltage
Output High Voltage
Output Low Voltage
Output High Voltage
Output Low Voltage
Output High Voltage
Output Low Voltage
Output High Voltage
Output Low Voltage
Output High Voltage
Output Low Voltage
Output High Voltage
V_OL8 Output Low Voltage
V_OH8 Output High Voltage
Zpd Pull Down Impedance
Zpu Pull Up Impedance
VHSOI
VHSOH
VHSOL
VCHIRPJ
VCHIRPK
HS Idle Level
HS Data Signaling High
HS Data Signaling Low
Chirp J Level
Chirp K Level
Min
Vcc3_3 – 0.51
–0.15
0.9(V_CPU_IO)
2.4
0.9Vcc3_3
N/A
Vcc3_3 – 0.5
Vcc3_3 – 0.5
0.9(VccHI)
VSWING–50 mV
VSWING–50 mV
38
48
38
46
–10.0
360
–10.0
700
–900
Max
0.51
0.25(V_CPU_IO)
0.4
0.55
0.4
0.4
0.4
0.1(VccHI)
0.05
VSWING+50 mV
VSWING+50 mV
10.0
440
10.0
1100
–500
Unit
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
Ohm
Ohm
Ohm
Ohm
mV
mV
mV
mV
mV
I_{OL /} I_OH
6 mA
–6 mA
1.5 mA
–0.5 mA
6 mA
–1 mA
6 mA
–0.5 mA
4.0 mA
4.0 mA
–2.0 mA
5 mA
–2 mA
1 mA
1 mA
Notes
1
1
1
1
1
HI 1.0 Mode
HI 1.5 Mode
–1 mA
–12 mA
–12 mA
HI 1.0 Mode
HI 1.5 Mode
Terminator High Voltage
Note 2
HI 1.5 Mode
Output High Voltage
Note 3
Vout =
0.5VccHI
Vout =
0.7V
HI 1.0 Mode
HI 1.5 Mode
Vout =
0.5VccHI
Vout =
0.7V
HI 1.0 Mode
HI 1.5 Mode
NOTES:
1. The CPUPWRGD, SERR#, PME#, PIRQ[A:H], GPIO[22], APIC[1:0], SMBDATA, SMBCLK and SMLINK[1:0]
signal has an open drain driver, and the V_OH spec does not apply. This signal must have external pull up
resistor.
2. The condition for the Terminator High Voltage is ZPD = ZTARG(VccHI/VSWING – 1).
3. The condition for the Output High Voltage is ZPD = ZTARG.
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Intel^® 82801DB ICH4 Datasheet