mpc8378 Freescale Semiconductor, Inc, mpc8378 Datasheet - Page 33

• Manufacturer Part Number: mpc8378
• Description: Powerquicc Ii Pro Processor
• Manufacturer: Freescale Semiconductor, Inc

9.1
Table 34
OV
9.2
Table 35
Freescale Semiconductor
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
Output hold from USB clock—all outputs
Note:
1
2
3
4
5
High-level input voltage
Low-level input voltage
Input current
High-level output voltage, I
Low-level output voltage, I
Note:
1
2
The symbols for timing specifications follow the pattern of t
and t
the input (I) to go invalid (X) with respect to the time the USB clock reference (K) goes high (H). Also, t
USB timing (US) for the USB clock reference (K) to go high (H) with respect to the output (O) going invalid (X) or output hold
time.
All timings are in reference to the USB clock, USBDR_CLK.
All signals are measured from OV
signaling levels.
Input timings are measured at the pin.
For active/float timing measurements, the high impedance or off state is defined to be when the total current delivered through
the component pin is less than or equal to that of the leakage current specification.
DD
The minimum V
Table
The symbol OV
(First two letters of functional block)(reference)(state)(signal)(state)
= 3.3 V ± 165 mV.
3.
provides the DC electrical characteristics for the ULPI interface at recommended
describes the general timing parameters of the USB interface of the device.
USB DC Electrical Characteristics
USB AC Electrical Specifications
Parameter
IN
IL
and maximum V
represents the input voltage of the supply and is referenced in
Parameter
MPC8377E PowerQUICC II Pro Processor Hardware Specifications, Rev. 3
Table 35. USB General Timing Parameters (ULPI Mode Only)
OL
OH
= 100 μA
= –100 μA
DD
Table 34. USB DC Electrical Characteristics
IH
/2 of the rising edge of the USB clock to 0.4 × OV
values are based on the respective minimum and maximum OV
Symbol
V
V
V
V
I
OH
IN
OL
IH
IL
Symbol
t
t
t
t
USKHOV
USKHOX
(First two letters of functional block)(signal)(state) (reference)(state)
for outputs. For example, t
USIVKH
USIXKH
t
USCK
OV
1
DD
–0.3
Min
—
—
2
– 0.2
Min
15
—
4
1
2
OV
Table
DD
Max
USIXKH
±30
0.8
0.2
—
DD
+ 0.3
3.
of the signal in question for 3.3-V
Max
—
—
—
—
7
symbolizes USB timing (US) for
Unit
μA
V
V
V
V
IN
USKHOX
Unit
ns
ns
ns
ns
ns
values found in
symbolizes
Notes
for inputs
2, 3, 4, 5
2, 3, 4, 5
2, 3, 4, 5
2, 3, 4, 5
2, 3, 4, 5
—
—
Notes
1
1
2
USB
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