High Performance Two Port 10/100 Managed Ethernet Switch with 32-Bit Non-PCI CPU Interface
Datasheet
Table 15.4 100BASE-TX Transceiver Characteristics
PARAMETER
SYMBOL
MIN
TYP
MAX
UNITS
NOTES
Overshoot and Undershoot
Jitter
V
-
-
5
%
OS
Note 15.9
1.4
nS
Note 15.7 Measured at line side of transformer, line replaced by 100Ω (+/- 1%) resistor.
Note 15.8 Offset from 16nS pulse width at 50% of pulse peak.
Note 15.9 Measured differentially.
Table 15.5 10BASE-T Transceiver Characteristics
PARAMETER
SYMBOL
MIN
TYP
MAX
UNITS
NOTES
Note 15.10
Transmitter Peak Differential Output Voltage
Receiver Differential Squelch Threshold
V
2.2
2.5
2.8
V
OUT
V
300
420
585
mV
DS
Note 15.10 Min/max voltages guaranteed as measured with 100Ω resistive load.
15.5
AC Specifications
This section details the various AC timing specifications of the LAN9312.
2
Note: The I C timing adheres to the Philips I2C-Bus Specification. Refer to the Philips I2C-Bus
2
Specification for detailed I C timing information.
15.5.1
Equivalent Test Load
Output timing specifications assume the 25pF equivalent test load illustrated in Figure 15.1 below.
OUTPUT
25 pF
Figure 15.1 Output Equivalent Test Load
Revision 1.2 (04-08-08)
444
SMSC LAN9312
DATASHEET
SMSC [ SMSC CORPORATION ]
