MPC8360E/MPC8358E PowerQUICC II Pro Processor Revision 2.x TBGA Silicon Hardware Specifications, Rev. 4
Freescale Semiconductor
67
USB
20 USB
This section provides the AC and DC electrical specifications for the USB interface of the
MPC8360E/58E.
20.1
USB DC Electrical Characteristics
Table 64
provides the DC electrical characteristics for the USB interface.
20.2
USB AC Electrical Specifications
Table 65
describes the general timing parameters of the USB interface of the device.
Figure 52
provide the AC test load for the USB.
Figure 52. USB AC Test Load
Table 64. USB DC Electrical Characteristics
Parameter
Symbol
Min
Max
Unit
High-level input voltage
V
IH
2
OV
DD
+ 0.3
V
Low-level input voltage
V
IL
–0.3
0.8
V
High-level output voltage, I
OH
= –100
μ
A
V
OH
OV
DD
– 0.4
—
V
Low-level output voltage, I
OL
= 100
μ
A
V
OL
—
0.2
V
Input current
I
IN
—
±10
μ
A
Table 65. USB General Timing Parameters
Parameter
Symbol
1
Min
Max
Unit
Notes
USB clock cycle time
t
USCK
20.83
—
ns
Full speed 48 MHz
USB clock cycle time
t
USCK
166.67
—
ns
Low speed 6 MHz
Skew between TXP and TXN
t
USTSPN
—
5
ns
—
Skew among RXP, RXN, and RXD
t
USRSPND
—
10
ns
Full speed transitions
Skew among RXP, RXN, and RXD
t
USRPND
—
100
ns
Low speed transitions
Notes:
1. The symbols used for timing specifications follow the pattern of t
(first two letters of functional block)(state)(signal)
for receive signals
and t
(first two letters of functional block)(state)(signal)
for transmit signals. For example, t
USRSPND
symbolizes USB timing (US) for the
USB receive signals skew (RS) among RXP, RXN, and RXD (PND). Also, t
USTSPN
symbolizes USB timing (US) for the USB
transmit signals skew (TS) between TXP and TXN (PN).
2.Skew measurements are done at OV
DD
/2 of the rising or falling edge of the signals.
Output
Z
0
= 50
Ω
OV
DD
/2
R
L
= 50
Ω