82551IT Datasheet, PDF (85/102 Pages) Intel Corporation – Fast Ethernet PCI Controller

Networking Silicon — 82551IT
Table 51. 10BASE-T Voltage/Current Characteristics
Symbol
Parameter
Condition
R_ID10
V_IDA10
V_IDR10
V_ICM10
V_OD10
I_CCT10
Input Differential
Impedance
10 MHz
Input Differential
Accept Peak Voltage
5 MHz  f  10 MHz
Input Differential
Reject Peak Voltage
5 MHz  f  10 MHz
Input Common Mode
Voltage
Output Differential
Peak Voltage
R_L = 100 
Line Driver Supply
Peak Current
R_BIAS10 = 619 
Min Typical Max
10
±585 ±440 ±3100
0
±440 ±300
V_CC/2
2.2
2.8
20
Units
K
mV
mV
V
V
mA
Notes
1, 2, 3
NOTES:
1. Current is measured on all V_CC pins (V_CC = 3.3 V).
2. Transmitter peak current is attained by dividing the measured maximum differential output peak voltage by
the load resistance value.
3. Recommended starting value for RBIAS10.
Table 52. Digital I/O Characteristics
Symbol
Parameter
V_IH
Output High Voltage
V_IL
Output Low Voltage
Min Typical Max
2.0
Vcc+0.5
-0.5
0.8
Units
V
V
Notes
Table 53. Crystal Input One (X1) Characteristics
Symbol
Parameter
Min Typical Max
V_IH
Input High Voltage
2.0
V_IL
Input Low Voltage
-0.5
Vcc+0.5
0.8
Units
V
V
Notes
Datasheet
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