Intel 82555 - Manual (Page 48)

82555 — Networking Silicon
44 Datasheet
11.3.3 100BASE-TX Voltage/Current DC Characteristics
V
IDA10
Input differential accept voltage 5 MHz ≤ f ≤ 10 MHz ±585 ±3100 mV
P
V
IDR10
Input differential reject voltage 5 MHz
≤ f ≤
10 MHz ±300 mV
P
V
ICM10
Input common mode voltage V
CC
/2 V
V
OD10
Output differential voltage
RL = 100 Ω b
RBIAS10 = 768
Ω
±2.2 ±2.8 V
I
CCT10
c Line driver supply RBIAS10 = 768 Ω 110 mA
I
CC10
d Current on all V
CC
pins 120 mA
I
CCT10TOT
Total supply current 230 mA
L
ILA10
e
Leakage on analog pins 20 mA
a. This value is measured across the receive differential pins, RDP and RDN.
b. RL is the resistive load across the receive differential pins, RDP and RDN.
c.
Transmitter current is measured with a 1:1 transformer on the center tap.
d. Current is measured on all V
CC
pins at V
CC
= 5.25 V.
e. The analog pins are: TDP, TDN, RDP, RDN, RBIAS10, and RBIAS100.
Symbol Parameter Description Condition Min Typ Max Units
Figure 11. RBIAS10 Resistance versus I
CCT10
8 0 5
Ω
7 6 8
Ω
7 3 5
Ω
1 0 5 m A 1 1 0 m A 1 1 5 m A
Icct10
Rbias10
Symbol Parameter Description Condition Min Typ Max Units
R
ID100
Input differential resistance
DC
V
RDP
= (V
CC
/2) +
0.5 V
V
RDN
= (V
CC
/2) -
0.5 V
10 K
Ω
V
IDA100
Input differential accept voltage ±500 mV
P
V
IDR100
Input differential reject voltage ±100 mV
P
V
ICM100
Input common mode voltage V
CC
/2 V
V
OD100
a Output differential voltage RBIAS100 = 634 Ω ±0.95 ±1.00 ±1.05 V
P
I
CCT100
b Line driver supply RBIAS100 = 634 Ω 40 mA