LAN9312 datasheet(444/458 Pages) SMSC

444 / 458 page

High Performance Two Port 10/100 Managed Ethernet Switch with 32-Bit Non-PCI CPU Interface

Datasheet

Revision 1.2 (04-08-08)

444

SMSC LAN9312

DATASHEET

Note 15.7

Measured at line side of transformer, line replaced by 100

Ω (+/- 1%) resistor.

Note 15.8

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

Note 15.9

Measured differentially.

Note 15.10

Min/max voltages guaranteed as measured with 100

Ω resistive load.

15.5

AC Specifications

This section details the various AC timing specifications of the LAN9312.

Note:

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

Specification

for detailed I2C timing information.

15.5.1

Equivalent Test Load

Output timing specifications assume the 25pF equivalent test load illustrated in Figure 15.1 below.

Overshoot and Undershoot

VOS

Jitter

1.4

Note 15.9

Table 15.5 10BASE-T Transceiver Characteristics

PARAMETER

SYMBOL

MIN

TYP

MAX

UNITS

NOTES

Transmitter Peak Differential Output Voltage

VOUT

2.2

2.5

2.8

Note 15.10

Receiver Differential Squelch Threshold

VDS

300

420

585

Figure 15.1 Output Equivalent Test Load

Table 15.4 100BASE-TX Transceiver Characteristics

PARAMETER

SYMBOL

MIN

TYP

MAX

UNITS

NOTES

25 pF

OUTPUT

LAN9312 Datasheet(PDF) 444 Page - SMSC Corporation

LAN9312 Datasheet(HTML) 444 Page - SMSC Corporation

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Datasheet Download

Link URL