LAN9313 datasheet(389/398 Pages) SMSC

389 / 398 page

Three Port 10/100 Managed Ethernet Switch with MII

Datasheet

SMSC LAN9313/LAN9313i

389

Revision 1.2 (04-08-08)

DATASHEET

Note 14.8

Measured at line side of transformer, line replaced by 100

Ω (+/- 1%) resistor.

Note 14.9

Offset from 16nS pulse width at 50% of pulse peak.

Note 14.10

Measured differentially.

Note 14.11

Min/max voltages guaranteed as measured with 100

Ω resistive load.

14.5

AC Specifications

This section details the various AC timing specifications of the LAN9313/LAN9313i.

Note:

The I2C timing adheres to the Philips I2C-Bus Specification. Refer to the Philips I2C-Bus

Specification

for detailed I2C timing information.

Note:

The MII/SMI timing adheres to the IEEE 802.3 specification. Refer to the IEEE 802.3

specification for detailed MII timing information.

14.5.1

Equivalent Test Load

Output timing specifications assume the 25pF equivalent test load illustrated in Figure 14.1 below.

Overshoot and Undershoot

VOS

Jitter

1.4

Note 14.10

Table 14.5 10BASE-T Transceiver Characteristics

PARAMETER

SYMBOL

MIN

TYP

MAX

UNITS

NOTES

Transmitter Peak Differential Output Voltage

VOUT

2.2

2.5

2.8

Note 14.11

Receiver Differential Squelch Threshold

VDS

300

420

585

Figure 14.1 Output Equivalent Test Load

Table 14.4 100BASE-TX Transceiver Characteristics

PARAMETER

SYMBOL

MIN

TYP

MAX

UNITS

NOTES

25 pF

OUTPUT

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