Local Bus
shows the MII management AC timing diagram.
t
MDC
MDC
t
MDCH
MDIO
(Input)
t
MDDVKH
t
MDDXKH
MDIO
(Output)
t
MDKHDX
t
MDCF
t
MDCR
Figure 21. MII Management Interface Timing Diagram
10 Local Bus
This section describes the DC and AC electrical specifications for the local bus interface of the
MPC8548E.
10.1
Local Bus DC Electrical Characteristics
provides the DC electrical characteristics for the local bus interface operating at BV
DD
=
3.3 V DC.
Table 38. Local Bus DC Electrical Characteristics (3.3 V DC)
Parameter
High-level input voltage
Low-level input voltage
Input current (V
IN1
= 0 V or V
IN
= BV
DD
)
High-level output voltage (BV
DD
= min, I
OH
= –2 mA)
Low-level output voltage (BV
DD
= min, I
OL
= 2 mA)
Symbol
V
IH
V
IL
I
IN
V
OH
V
OL
Min
2
–0.3
—
2.4
—
Max
BV
DD
+ 0.3
0.8
±5
—
0.4
Unit
V
V
μA
V
V
Note:
1. Note that the symbol V
IN
, in this case, represents the BV
IN
symbol referenced in
and
MPC8548E PowerQUICC™ III Integrated Processor Hardware Specifications, Rev. 6
Freescale Semiconductor
41
FREESCALE [ FREESCALE SEMICONDUCTOR, INC ]
