Fast Ethernet 10/100 Hex Transceiver with Full MII — LXT9763
Table 17. Digital I/O Characteristics - MII Pins
1
Parameter
Input Low voltage
Sym
Min
Typ
Max
Units
Test Conditions
VIL
VIH
II
–
2.0
-10
–
–
–
–
–
–
–
0.8
–
V
V
–
–
Input High voltage
Input current
10
0.4
–
µA
V
0.0 < VI < VCC
Output Low voltage
VOL
VOH
VOH
IOL = 4 mA
2.2
2.0
–
V
IOH = -4 mA, VCC = 3.3V
IOH = -4 mA, VCC = 2.5V
VCC = 2.5V
Output High voltage
–
V
2
RO
100
100
–
Ω
Ω
Driver output resistance
(Line driver output enabled)
2
RO
–
–
VCC = 3.3V
1. Typical values are at 25 °C and are for design aid only; not guaranteed and not subject to production testing.
2. Parameter is guaranteed by design; not subject to production testing.
Table 18. Required Reference Clock (REFCLK) Characteristics
Parameter
Input Low voltage
Sym
Min
Typ1
Max
Units
Test Conditions
VIL
VIH
F
–
2.0
–
–
–
0.8
–
V
V
–
–
–
–
–
Input High voltage
Input frequency
25
–
–
MHz
ppm
%
Input clock frequency tolerance1
Input clock duty cycle1
∆f
–
± 100
60
Tdc
40
–
1. Parameter is guaranteed by design; not subject to production testing.
Table 19. 100BASE-TX Transceiver Characteristics
1
Parameter
Sym
Min
Typ
Max
Units
Test Conditions
Peak differential output voltage
Signal amplitude symmetry
Signal rise/fall time
VP
Vss
TRF
TRFS
0.95
98
–
–
–
–
1.05
102
5.0
V
Note 2
Note 2
Note 2
Note 2
%
ns
ns
3.0
–
Rise/fall time symmetry
0.5
Offset from 16ns pulse width at
50% of pulse peak
Duty cycle distortion
Overshoot
–
–
–
–
–
± 0.5
5
ns
%
VO
–
1. Typical values are at 25 °C and are for design aid only; not guaranteed and not subject to production testing.
2. Measured at the line side of the transformer, line replaced by 100Ω(+/-1%) resistor.
Datasheet
45
INTEL [ INTEL ]
