SMSC LAN91C111 - Manual (Page 109)

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
TOIR TP Output Current
Adjustment Range 0.80 1.2 VDD = 3.3V, Adjustable with RBIAS,
relative to TOIA with RBIAS=11K
0.86 1.16 VDD = 3.3V, Adjustable with LVL[3:0]
Relative to Value at TLVL[3:0]=1000
TORA 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.
TOR TP Output
Resistance 10K Ohm
TOC 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.
RCMR TP Input Common
Mode Voltage Range ROCV
± 0.25 Volt Voltage on TPI± with Respect to
GND.
RDR TP Input Differential
Voltage Range VDD Volt
RIR TP Input Resistance 5K Ohm
RIC TP Input Capacitance 10 pF
SYM PARAMETER
LIMIT
UNIT CONDITIONS
MIN TYP MAX