PCI/PCI-X
shows the AC timing diagram for the I
2
C bus.
SDA
t
I2CF
t
I2CL
SCL
t
I2SXKL
S
t
I2DXKL
t
I2CH
Sr
t
I2SVKH
t
I2PVKH
P
S
t
I2DVKH
t
I2SXKL
t
I2KHKL
t
I2CR
t
I2CF
Figure 30. I
2
C Bus AC Timing Diagram
12 PCI/PCI-X
This section describes the DC and AC electrical specifications for the PCI/PCI-X bus of the MPC8540.
12.1 PCI/PCI-X DC Electrical Characteristics
provides the DC electrical characteristics for the PCI/PCI-X interface of the MPC8540.
Table 41. PCI/PCI-X DC Electrical Characteristics
1
Parameter
High-level input voltage
Low-level input voltage
Input current
(V
IN 2
= 0 V or V
IN
= V
DD
)
High-level output voltage
(OV
DD
= min, I
OH
= –100
μA)
Low-level output voltage
(OV
DD
= min, I
OL
= 100
μA)
Symbol
V
IH
V
IL
I
IN
V
OH
V
OL
Min
2
–0.3
—
Max
OV
DD
+ 0.3
0.8
±5
Unit
V
V
μA
OV
DD
– 0.2
—
—
V
0.2
V
Notes:
1.Ranges listed do not meet the full range of the DC specifications of the
PCI 2.2 Local Bus Specifications.
2.Note that the symbol V
IN
, in this case, represents the OV
IN
symbol referenced in
and
MPC8540 Integrated Processor Hardware Specifications, Rev. 4
50
Freescale Semiconductor
FREESCALE [ FREESCALE SEMICONDUCTOR, INC ]
