Datasheet

USB 2.0 Hub and 10/100 Ethernet Controller

Datasheet

Revision 1.2 (02-29-12) 44 SMSC LAN9512/LAN9512i

DATASHEET

Note 4.6 This specification applies to all inputs and tri-stated bi-directional pins. Internal pull-down

and pull-up resistors add +/- 50uA per-pin (typical).

Note 4.7 This is the total 5.5V input leakage for the entire device.

Note 4.8 XI can optionally be driven from a 25MHz single-ended clock oscillator.

Note 4.9 Measured at line side of transformer, line replaced by 100Ω (+/- 1%) resistor.

Note 4.10 Offset from 16nS pulse width at 50% of pulse peak.

Note 4.11 Measured differentially.

Note 4.12 Min/max voltages guaranteed as measured with 100Ω resistive load.

Table 4.6 100BASE-TX Transceiver Characteristics

PARAMETER SYMBOL MIN TYP MAX UNITS NOTES

Peak Differential Output Voltage High V

PPH

950 - 1050 mVpk Note 4.9

Peak Differential Output Voltage Low V

PPL

-950 - -1050 mVpk Note 4.9

Signal Amplitude Symmetry V

98 - 102 % Note 4.9

Signal Rise and Fall Time T

3.0 - 5.0 nS Note 4.9

Rise and Fall Symmetry T

RFS

--0.5nSNote 4.9

Duty Cycle Distortion D

35 50 65 % Note 4.10

Overshoot and Undershoot V

--5%

Jitter 1.4 nS Note 4.11

Table 4.7 10BASE-T Transceiver Characteristics

PARAMETER SYMBOL MIN TYP MAX UNITS NOTES

Transmitter Peak Differential Output Voltage V

OUT

2.2 2.5 2.8 V Note 4.12

Receiver Differential Squelch Threshold V

300 420 585 mV