82551IT Datasheet, PDF (83/102 Pages) Intel Corporation – Fast Ethernet PCI Controller

Networking Silicon — 82551IT
The 82551IT supports PCI interface standards. In the PCI mode, it is five volts tolerant and
supports both 5 V and 3.3 V signaling environments.
Table 47. PCI Interface DC Specifications
Symbol
Parameter
Condition
V_IHP
V_ILP
V_IPUP
V_IPDP
I_ILP
V_OHP
V_OLP
C_INP
C_CLKP
C_IDSEL
L_PINP
I_OFFPME
Input High Voltage
Input Low Voltage
Input Pull-up Voltage
Input Pull-down Voltage
Input Leakage Current
Output High Voltage
Output Low Voltage
Input Pin Capacitance
0 < V_IN < V_CC
I_out = -2 mA
I_out = -500 µA
I_out = 3 mA, 6 mA
I_out = 1500 µA
CLK Pin Capacitance
IDSEL Pin Capacitance
Pin Inductance
PME# Input Leakage
Current
V_O < V_IO
Min
Max Units
0.475V_CC V_IO + 0.5 V
-0.5 0.325V_CC V
0.7V_CC
V
0.2V_CC
V
±10
µA
2.4
V
0.9V_CC
V
0.55
V
0.1V_CC
V
10
pF
5
12
pF
8
pF
20
nH
1
mA
Notes
1
1
2
PCI
3, PCI
4
4
4
4
5
NOTES:
1. These values are only applicable in 3.3 V signaling environments. Outside of this limit the input buffer must
consume its minimum current.
2. Input leakage currents include high-Z output leakage for all bidirectional buffers with tristate outputs.
3. Signals without pull-up resistors have 3 mA low output current; and signals requiring pull-up resistors, 6 mA.
The signals requiring pull-up resistors include: FRAME#, TRDY#, IRDY#, DEVSEL#, STOP#, SERR# and
PERR#.
4. This value is characterized but not tested.
5. This input leakage current is the maximum allowable leakage into the PME# open drain driver when power is
removed from V_CC of the component. This assumes that no event has occurred to cause the device to
assertion of PME#.
Table 48. Flash/EEPROM Interface DC Specifications
Symbol
Parameter
Condition
V_IHL
V_ILL
I_ILL
V_OHL
V_OLL
C_INL
Input High Voltage
Input Low Voltage
Input Low Leakage
Current
Output High Voltage
Output Low Voltage
Input Pin Capacitance
0 < V_IN < V_CC
I_out = -1 mA
I_out = 2 mA
1. This value is characterized but not tested.
Min
Max Units Notes
2.0 V_CC + 0.5 V
-0.5
0.8
V
±20
µA
2.4
V
0.4
V
10
pF
1
Datasheet
77