Local Bus
and
provide the AC test load and signals for the USB, respectively.
Output
Z
0
= 50
Ω
R
L
= 50
Ω
OV
DD
/2
Figure 18. USB AC Test Load
USB0_CLK/USB1_CLK/DR_CLK
t
USIVKH
Input Signals
t
USIXKH
t
USKHOV
Output Signals:
t
USKHOX
Figure 19. USB Signals
10 Local Bus
This section describes the DC and AC electrical specifications for the local bus interface of the
MPC8349EA.
10.1
Local Bus DC Electrical Characteristics
Table 37. Local Bus DC Electrical Characteristics
Parameter
Symbol
V
IH
V
IL
I
IN
V
OH
V
OL
Min
2
–0.3
—
OV
DD
– 0.2
—
Max
OV
DD
+ 0.3
0.8
±5
—
0.2
Unit
V
V
μA
V
V
provides the DC electrical characteristics for the local bus interface.
High-level input voltage
Low-level input voltage
Input current
High-level output voltage, I
OH
= –100
μA
Low-level output voltage, I
OL
= 100
μA
MPC8349EA PowerQUICC II Pro Integrated Host Processor Hardware Specifications, Rev. 13
Freescale Semiconductor
35
FREESCALE [ FREESCALE SEMICONDUCTOR, INC ]
