1894KI-40LF IDT, 1894KI-40LF Datasheet - Page 33

• Manufacturer Part Number: 1894KI-40LF
• Description: Ethernet ICs 3.3V 10/100 PHY RMII
• Manufacturer: IDT

Specifications of 1894KI-40LF

• Rohs: yes
• Part # Aliases: ICS1894KI-40LF

DC Operating Characteristics for REF_IN
DC Operating Characteristics for MII Pins
Timing Diagrams
Timing for Clock Reference (REF_IN) Pin
REF_IN Timing Diagram
IDT® 10BASE-T/100BASE-TX INTEGRATED PHYCEIVER WITH RMII INTERFACE
ICS1894-40
10BASE-T/100BASE-TX INTEGRATED PHYCEIVER WITH RMII INTERFACE
REF_IN
The table below lists the 3.3V DC characteristics for the REF_IN pin.
The table below lists DC operating characteristics for the Media Independent Interface (MII) for the ICS1894-40.
The table below lists the significant time periods for signals on the clock reference (REF_IN) pin. The REF_IN
Timing Diagram figure shows the timing diagram for the time periods.
Input High Voltage
Input Low Voltage
MII Input Pin Capacitance
MII Output Pin Capacitance
MII Output Drive Impedance
Period
Time
t1
t2
t1
t2
Parameter
Parameter
REF_IN Duty Cycle (MII)
REF_IN Period (MII)
REF_IN Duty Cycle (RMII)
REF_IN Period (RMII)
Parameter
Symbol
V
V
IH
IL
VDDIO = 3.3V
Conditions
Min.
2.97
–
–
–
t1
t2
Max.
Conditions
0.33
–
Min.
–
–
–
–
–
–
–
Units
V
V
33
Typ.
20
–
–
Min.
45
45
–
–
Max.
14
8
–
Typ.
50
40
50
20
Units
ICS1894-40
pF
pF
Max. Units
Ω
55
55
–
–
PHYCEIVER
ns
ns
%
%
REV K 022412