LAN83C183 Datasheet, PDF (87/113 Pages) SMSC Corporation – FAST ETHERNET PHYSICAL LAYER DEVICE

5.2.2 FX Characteristics, Transmit
Unless otherwise noted, all test conditions for FX transmit and receive operations are
as follows:
• TA = 0 to +70 °C
• VDD=3.3 V ± 5%
• 25 MHz ± 0.01%
• REXT=10 K ± 1%, no load
• FXO± Loading as shown in ?Apnote? or Equivalent
• 125 MHz Square Wave on FXI+/- and SD Inputs
Table 5.5 shows the FX characteristics for transmit operation.
Table 5.5 FX Characteristics, Transmit
Sym
FOVH
FOVL
FOIA
FOIR
Parameter
FXO± Output
Voltage, High
FXO± Output
Voltage, Low
FXO± Output
Current
FXO± Output
Current
Adjustment
Range
Min
VDD -
1.020
VDD -
1.810
12
0.85
0.85
FORA
FXO± Output
Current TLVL
Step Accuracy
FORF
FXO±
Differential
Output Rise and
Fall Time
FORFS
FXO±
Differential
Output and Fall
Time Symmetry
FODC
FXO±
Differential
Output Duty
Cycle Distortion
FOJ
FXO±
Differential
Output Jitter
FOR
FXO± Output
Resistance
FOC
FXO± Output
Capacitance
Limit
Typ
10 K
10
Max
VDD -
0.880
VDD -
1.620
20
Unit
Conditions
V Single-ended, measure FXO± relative
to GND
V Single-ended, measure FXO± relative
to GND
mA pk
1.15
1.30
±0.50
VDD = 3.3 V, adjustable with REXT,
relative to FOIA with REXT = 10 K
VDD = 3.3 V, adjustable With FLVL[1:0],
relative To value at FLVL[1:0] = 0b10
% Relative to ideal values In Table 1.9
1.3
ns
±0.5
ns Difference between rise nd fall times on
FXO+
±0.25
ns Output Data = 0101... pattern measure at
50% points
±1.3
ns Output data = /H/
Ohm
pF
SMSC DS – LAN83C183
87
Rev. 12/14/2000