mpc8306 Freescale Semiconductor, Inc, mpc8306 Datasheet - Page 33

• Manufacturer Part Number: mpc8306
• Description: Powerquicc Ii Pro Integrated Communications Processor Family Hardware Specifications
• Manufacturer: Freescale Semiconductor, Inc

The following figures provide the AC test load and signals for the USB, respectively.
Freescale Semiconductor
High-level input voltage
Low-level input voltage
Input current
High-level output voltage, I
Low-level output voltage, I
USB clock cycle time
Input setup to USB clock—all inputs
input hold to USB clock—all inputs
USB clock to output valid—all outputs (except
USBDR_STP_USBDR_STP)
USB clock to output valid—USBDR_STP
Output hold from USB clock—all outputs
Note:
1. The symbols used for timing specifications follow the pattern of t
inputs and t
(USB) for the input (I) to go invalid (X) with respect to the time the USB clock reference (K) goes high (H). Also, t
symbolizes us timing (USB) for the USB clock reference (K) to go high (H), with respect to the output (O) going invalid (X) or
output hold time.
MPC8306 PowerQUICC II Pro Integrated Communications Processor Family Hardware Specifications, Rev. 2
(first two letters of functional block)(reference)(state)(signal)(state)
Output Signals
USBDR_CLK
Input Signals
Parameter
Parameter
OL
OH
Output
= 100 A
= –100 A
t
USKHOV
Table 32. USB DC Electrical Characteristics
Table 33. USB General Timing Parameters
Figure 25. USB AC Test Load
Z
Figure 26. USB Signals
0
= 50 
t
USIVKH
t
USKHOX
Symbol
V
V
V
V
I
IN
OH
OL
IH
Symbol
IL
t
t
t
t
t
USKHOV
USKHOV
USKHOX
USIVKH
USIXKH
t
USCK
(first two letters of functional block)(signal)(state)(reference)(state)
for outputs. For example, t
1
R
OV
L
= 50 
t
DD
USIXKH
–0.3
Min
Min
2.0
—
—
15
—
—
4
1
2
– 0.2
OV
DD
USIXKH
Max
7.5
/2
—
—
—
—
7
OV
symbolizes USB timing
DD
Max
0.8
0.2
±5
—
+ 0.3
Unit
ns
ns
ns
ns
ns
ns
USKHOX
Note
Unit
A
—
—
—
—
—
—
V
V
V
V
for
USB
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