ICS1894-32_1 Datasheet, PDF (33/53 Pages) Integrated Device Technology – 10BASE-T/100BASE-TX INTEGRATED PHYCEIVER WITH RMII INTERFACE

ICS1894-32
10BASE-T/100BASE-TX INTEGRATED PHYCEIVER WITH RMII INTERFACE
PHYCEIVER
DC Operating Characteristics for REFIN
The table below lists the 3.3V DC characteristics for the REFIN pin.
Parameter
Input High Voltage
Input Low Voltage
Symbol
V_IH
V_IL
Min.
2.97
–
Max.
–
0.33
Units
V
V
DC Operating Characteristics for MII Pins
The table below lists DC operating characteristics for the Media Independent Interface (MII) for the ICS1894-32.
Parameter
MII Input Pin Capacitance
MII Output Pin Capacitance
MII Output Drive Impedance
Conditions
–
–
VDDIO = 3.3V
Min.
–
–
–
Typ.
–
–
20
Max.
8
14
–
Units
pF
pF
Ω
Timing Diagrams
Timing for Clock Reference (REFIN) Pin
The table below lists the significant time periods for signals on the clock reference (REFIN) pin. The REFIN Timing
Diagram figure shows the timing diagram for the time periods.
Time
Period
Parameter
t1 REFIN Duty Cycle (MII)
t2 REFIN Period (MII)
t1 REFIN Duty Cycle (RMII)
t2 REFIN Period (RMII)
Conditions
–
–
–
–
Min. Typ. Max. Units
45
50
55
%
–
40
–
ns
45
50
55
%
–
20
–
ns
REFIN Timing Diagram
t1
REFIN
t2
IDT® 10BASE-T/100BASE-TX INTEGRATED PHYCEIVER WITH RMII INTERFACE
33
ICS1894-32 REV G 020509