MCF54455_0812 Datasheet, PDF (35/48 Pages) Freescale Semiconductor, Inc – MCF5445x ColdFire® Microprocessor Data Sheet

Electrical Characteristics
CRS, COL
E9
Figure 21. MII Async Inputs Timing Diagram
5.13.4 MII Serial Management Timing Specifications
Table 23. MII Serial Management Channel Signal Timing
Num
E10
E11
E12
E13
E14
E15
Characteristic
MDC cycle time
MDC pulse width
MDC to MDIO output valid
MDC to MDIO output invalid
MDIO input to MDC setup
MDIO input to MDC hold
Symbol Min
Max
t_MDC
400
—
40
60
—
375
25
—
10
—
0
—
MDC (Output)
MDIO (Output)
E10
E11
E11
E12
E13
Valid Data
Unit
ns
% t_MDC
ns
ns
ns
ns
MDIO (Input)
E14
E15
Valid Data
Figure 22. MII Serial Management Channel TIming Diagram
5.14 32-Bit Timer Module Timing Specifications
Table 24 lists timer module AC timings.
Table 24. Timer Module AC Timing Specifications
Name
T1
T2
Characteristic
DTnIN cycle time (n = 0:3)
DTnIN pulse width (n = 0:3)
Min
Max
Unit
3
—
t_sys/2
1
—
t_sys/2
MCF5445x ColdFire^® Microprocessor Data Sheet, Rev. 3
Freescale Semiconductor
35