GD82559ER Datasheet, PDF (81/94 Pages) Intel Corporation – PCI Controller

Networking Silicon — GD82559ER
V_IDR100
V_ICM100
V_OD100
I_CCT100
Table 19. 100BASE-TX Voltage/Current Characteristics
Input Differential
Reject Peak Voltage
±100 mV
Input Common Mode
Voltage
Output Differential
Peak Voltage
V_CC/2
V
0.95 1.00 1.05
V
Line Driver Supply
Peak Current
RBIAS100 = 619 Ω
20
mA
1
NOTES: Current is measured on all V_CC pins (V_CC = 3.3 V).
1. Transmitter peak current is attained by dividing the measured maximum differential output peak voltage by
the load resistance value.
Rbias100
585 0hm
619 Ohm
650 Ohm
19mA
20 mA
21mA Icct100
Figure 24. RBIAS100 Resistance Versus Transmitter Current
NOTES: Current is measured on all V_CC pins (V_CC = 3.3 V).
Table 20. 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
RL = 100 Ω
Line Driver Supply
Peak Current
RBIAS10 = 549 Ω
Min Typical Max
10
Units
KΩ
±585 ±440 ±3100 mV
0
±440 ±300 mV
V_CC/2
V
2.2
2.8
V
48
mA
Notes
1
1. Transmitter peak current is attained by dividing the measured maximum differential output peak voltage by
the load resistance value.
Datasheet
75