mpc8343e Freescale Semiconductor, Inc, mpc8343e Datasheet - Page 28

• Manufacturer Part Number: mpc8343e
• Description: Mpc8343e Powerquicc
• Manufacturer: Freescale Semiconductor, Inc

USB
9
This section provides the AC and DC electrical specifications for the USB interface of the MPC8343E.
9.1
Table 27
9.2
Table 28
28
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
Output hold from USB clock—all outputs
Notes:
1. The symbols for timing specifications follow the pattern of t
2. All timings are in reference to USB clock.
3. All signals are measured from OV
4. Input timings are measured at the pin.
5. For active/float timing measurements, the Hi-Z or off-state is defined to be when the total current delivered through the
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.
signaling levels.
component pin is less than or equal to that of the leakage current specification.
(first two letters of functional block)(reference)(state)(signal)(state)
USB
provides the DC electrical characteristics for the USB interface.
describes the general timing parameters of the USB interface of the MPC8343E.
USB DC Electrical Characteristics
USB AC Electrical Specifications
MPC8343E PowerQUICC™ II Pro Integrated Host Processor Hardware Specifications, Rev. 11
Parameter
Parameter
OL
OH
= 100 μA
= –100 μA
DD
Table 27. USB DC Electrical Characteristics
Table 28. USB General Timing Parameters
/2 of the rising edge of the USB clock to 0.4 × OV
Symbol
t
t
t
t
USKHOV
USKHOX
USIVKH
USIXKH
for outputs. For example, t
t
(first two letters of functional block)(signal)(state)(reference)(state)
USCK
Symbol
1
V
V
V
V
I
IN
OH
OL
IH
IL
Min
15
—
4
1
2
OV
DD
–0.3
Min
USIXKH
—
—
2
DD
– 0.2
of the signal in question for 3.3 V
symbolizes USB timing (US) for
Max
—
—
—
—
7
OV
Freescale Semiconductor
DD
Max
USKHOX
0.8
0.2
±5
—
+ 0.3
Unit
ns
ns
ns
ns
ns
symbolizes
for inputs
Notes
Unit
2–5
2–5
2–5
2–5
2–5
μA
V
V
V
V