Datasheet 45
Networking Silicon — 82555

11.4 AC Characteristics

11.4.1 MII Clock Specifications

ICC100cCurrent on all VCC pins 235 mA
ICCT100TOT Total supply current 275 mA
a. Tr ansmitter current is measured with a 1:1 transformer on the center tap.
b. Tr ansmitter current is measured with a 1:1 transformer on the center tap.
c. Current is measured on all VCC pins at VCC = 5.25 V.
Symbol Parameter Description Condition Min Typ Max Units
Figure 12. RBIAS100 Resistance versus ICCT100
667
634
604
38mA 40mA 42mA
Icct100Rbias100
Figure 13. AC Testing Level Conditions
Output Levels Input Level s
VIH = 2.0 V
VIL = 0.8 VVOL = 0.45 V
VOH = 2.4 V
Symbol Parameter Conditions Min Typ Max Units
T1 TP100 TXC/RXC period 100 Mbps 40 ns
T2 TP10 TXC/RXC period 10 Mbps 400 ns
T3 TPMDC MDC clock period 400 ns
T4 TTXDC TXC duty cycle 35 65 %
T5 TRXDC RXC duty cycle 35 65 %
T6 TMDC MDC duty cycle 35 65 %