AC207-DS00-R datasheet(47/60 Pages) BOARDCOM

47 / 60 page

Preliminary Data Sheet

AC207

07/08/02

B roa dcom

Document

AC207-DS04-405-R

Operating Range

Page 37

100BASE-TX TRANSCEIVER CHARACTERISTICS

10BASE-T TRANSCEIVER CHARACTERISTICS

Table 46: 100BASE-TX Transceiver Characteristics

Parameter

Symbol

Conditions

Min

Typ

Max

Units

Peak-to-peak differential output

voltage

Note 1

1.9

2.0

2.1

Output voltage symmetry

Vss

Note 1

0.98

1.02

Signal rise/fall time

Trf

Note 1

3.0

5.0

Rise/fall time symmetry

Trfs

Note 1

0.5

Duty cycle distortion

Dcd

0.5

Overshoot/undershoot

Vos

Output jitter

Scrambled Idle

1.4

Receive jitter tolerance

4ns

Output current high

Ioh

1:1 Transformer

Output current high

Ioh

1.25:1 Transformer

Common mode input voltage

1.25

Differential input resistance

Ω

Note 1: 50

Ω (± 1%) resistor to VCC on each output

Table 47: 10BASE-T Transceiver Characteristics

Parameter

Symbol

Conditions

Min

Typ

Max

Units

Peak-to-peak differential output

voltage

Vop

Note 1

4.4

5.6

Start of idle pulse width

300

350

Output jitter

1.4

Receive jitter tolerance

Differential squelch threshold

Vds

300

400

500

Common mode rejection

Note 1: 50

Ω (± 1%) resistor to VCC on each output

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