參數(shù)資料
型號： MPC8569EVTAQLJA
廠商： FREESCALE SEMICONDUCTOR INC
元件分類： 微控制器/微處理器
英文描述： RISC PROCESSOR, PBGA783
封裝： 29 X 29 MM, 1 MM PITCH, PLASTIC, BGA-783
文件頁數(shù)： 19/126頁
文件大?。?/td> 2847K
代理商： MPC8569EVTAQLJA
USB Interface
MPC8569E PowerQUICC III Integrated Processor Hardware Specifications, Rev. 0
Freescale Semiconductor
115
2.21
USB Interface
This section provides the AC and DC electrical specifications for the USB interface of the MPC8569E.
2.21.1
USB DC Electrical Characteristics
The following table provides the USB DC electrical characteristics.
2.21.2
USB AC Electrical Specifications
The following table describes the general USB timing specifications.
Table 77. USB DC Electrical Characteristics
For recommended operating conditions, see Table 3
Parameter
Symbol
Min
Max
Unit
Notes
Input high voltage
VIH
2—
V
1
Input low voltage
VIL
—0.8
V
1
Input current (OVIN = 0 V or OVIN = OVDD)IIN
—±40
μA2
Output high voltage (OVDD = min, IOH = –2 mA)
VOH
2.8
—
V
—
Output low voltage (OVDD = min, IOL = 2 mA)
VOL
—0.3
V
—
Differential input sensitivity
VDI
0.2
—
V
3
Differential common mode range
VCM
0.8
2.5
V
3
Note:
1. The min VILand max VIH values are based on the respective min and max OVIN values found in Table 3.
2. The symbol OVIN represents the input voltage of the supply. It is referenced in Table 3.
3. Applies to low/full speed
Table 78. USB General Timing Parameters
For recommended operating conditions, see Table 3
Parameter
Symbol1
Min
Max
Unit
Notes
USB clock cycle time
tUSCK
20.83
—
ns
Full speed 48 MHz
USB clock cycle time
tUSCK
166.67
—
ns
Low speed 6 MHz
Skew between TXP and TXN
tUSTSPN
—5
ns
2
Skew among RXP, RXN, and RXD
tUSRSPND
—
10
ns
Full-speed transitions,
2
Skew among RXP, RXN, and RXD
tUSRPND
—
100
ns
Low-speed transitions,
2
Notes:
1. The symbols used for timing specifications follow the pattern 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, tUSRSPND symbolizes USB timing (US) for the USB
receive signals skew (RS) among RXP, RXN, and RXD (PND). Also, tUSTSPN symbolizes USB timing (US) for the USB
transmit signals skew (TS) between TXP and TXN (PN).
2. Skew measurements are done at OVDD/2 of the rising or falling edge of the signals.
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