- Standard Microsystems Ethernet Single Chip Product Manual

10/100 Non-PCI Ethernet Single Chip MAC + PHY
Datasheet
SMSC LAN91C111 REV C 109 Revision 1.91 (08-18-08)
DATASHEET
13.4 Twisted Pair Characteristics, Receive
Unless otherwise noted, all test conditions are as follows:
 Vcc = 3.3V +/-5%
 RBIAS = 11K +/- 1 %, no load
 62.5/10 Mhz Square Wave on TP inputs in 100/10 Mbps
T
OIR
TP Output Current
Adjustment Range
0.80 1.2 V
DD
= 3.3V, Adjustable with RBIAS,
relative to T
OIA
with RBIAS=11K
0.86 1.16 V
DD
= 3.3V, Adjustable with LVL[3:0]
Relative to Value at TLVL[3:0]=1000
T
ORA
TP Output Current
TLVL Step Accuracy
+/-50 % Relative to Ideal Values in Table 3.
Table 3 Values Relative to Output with
TLVL[3:0]=1000.
T
OR
TP Output
Resistance
10K Ohm
T
OC
TP Output
Capacitance
15 pF
SYM PARAMETER
LIMIT
UNIT CONDITIONS
MIN TYP MAX
RST TP Input Squelch
Threshold
166 500 mV pk 100 Mbps, RLVL=0
310 540 mV pk 10 Mbps, RLVL=0
60 200 mV pk 100 Mbps, RLVL=1
186 324 mV pk 10 Mbps, RLVL=1
RUT TP Input Unsquelch
Threshold
100 300 mV pk 100 Mbps, RLVL=0
186 324 mV pk 10 Mbps, RLVL=0
20 90 mV pk 100 Mbps, RLVL=1
112 194 mV pk 10 Mbps, RLVL=1
TP Input Open Circuit
Voltage
VDD- 2.4
± 0.2
Volt Voltage on Either TPI+ or TPI- with
Respect to GND.
R
CMR
TP Input Common
Mode Voltage Range
ROCV
± 0.25
Volt Voltage on TPI± with Respect to
GND.
R
DR
TP Input Differential
Voltage Range
VDD Volt
R
IR
TP Input Resistance 5K Ohm
R
IC
TP Input Capacitance 10 pF
SYM PARAMETER
LIMIT
UNIT CONDITIONS
MIN TYP MAX