80221 datasheet(56/91 Pages) LSI

56 / 91 page

80220/80221

MD400159/E

TWISTED PAIR CHARACTERISTICS, TRANSMIT

Unless otherwise noted, all test conditions are as follows:

1. T

A= 0 to +70°C

2. V

CC = 5V +/-5%

3. 25 MHz +/- 0.01%

4. REXT = 10K +/- 1%, no load

5. TPO

± loading shown in Figure 11 or equivalent.

LIMIT

SYM

PARAMETER

MIN

TYP

MAX

UNIT

CONDITIONS

TP Differential Output

0.950

1.000

1.050

V pk

100 Mbps, UTP Mode, 100 Ohm Load

Voltage

1.165

1.225

1.285

V pk

100 Mbps, STP Mode, 150 Ohm Load

2.2

2.5

2.8

V pk

10 Mbps, UTP Mode, 100 Ohm Load

2.694

3.062

3.429

V pk

10 Mbps, STP Mode, 150 Ohm Load

OVS

TP Differential Output

102

100 Mbps, Ratio of Positive And

Voltage Symmetry

Negative Amplitude Peaks on TPO

ORF

TP Differential Output

3.0

5.0

100 Mbps

Rise And Fall Time

TRFADJ [1:0] = 10

ORFS

TP Differential Output

+/- 0.5

100 Mbps, Difference Between Rise

Rise And Fall Time

And Fall Times on TPO

Symmetry

TRFADJ [1:0] = 10

ODC

TP Differential Output

+/-

100 Mbps, Output Data=0101... NRZ

Duty Cycle Distortion

0.25

Pattern Unscrambled, Measure At 50%

Points

TP Differential Output

+/- 1.4

100 Mbps, Output Data=scrambled /H/

Jitter

TP Differential Output

5.0

100 Mbps

Overshoot

OVT

TP Differential Output

See Figure 4

10 Mbps

Voltage Template

SOI

TP Differential Output

See Figure 6

10 Mbps

SOI Voltage Template

LPT

TP Differential Output

See Figure 7

10 Mbps, NLP and FLP

Link Pulse Voltage

Template

OIV

TP Differential Output

+/- 50

10 Mbps. Measured on Secondary

Idle Voltage

Side of Xfmr in Figure 11.

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