參數(shù)資料
型號： MPC8572EVTARNB
廠商： FREESCALE SEMICONDUCTOR INC
元件分類： 微控制器/微處理器
英文描述： 32-BIT, 1067 MHz, MICROPROCESSOR, PBGA1023
封裝： 33 X 33 MM, LEAD FREE, PLASTIC, FCBGA-1023
文件頁數(shù)： 86/138頁
文件大?。?/td> 1502K
代理商： MPC8572EVTARNB
MPC8572E PowerQUICC III Integrated Processor Hardware Specifications, Rev. 2
Freescale Semiconductor
51
Ethernet Management Interface Electrical Characteristics
9
Ethernet Management Interface Electrical
Characteristics
The electrical characteristics specified here apply to MII management interface signals ECn_MDIO
(management data input/output) and ECn_MDC (management data clock). The electrical characteristics
for GMII, SGMII, RGMII, RMII, TBI and RTBI are specified in “Section 8, “Ethernet: Enhanced
9.1
MII Management DC Electrical Characteristics
The ECn_MDC and ECn_MDIO are defined to operate at a supply voltage of 3.3 V or 2.5 V. The DC
electrical characteristics for ECn_MDIO and ECn_MDC are provided in Table 42 and Table 43.
TSEC_1588_CLK_OUT duty cycle
tT1588CLKOTH
/tT1588CLKOUT
30
50
70
%
—
TSEC_1588_PULSE_OUT
tT1588OV
0.5
—
3.0
ns
—
TSEC_1588_TRIG_IN pulse width
tT1588TRIGH
2*tT1588CLK_MAX
——ns
2
Note:
1.When TMR_CTRL[CKSEL] is set as ‘00’, the external TSEC_1588_CLK input is selected as the 1588 timer reference clock
source, with the timing defined in Table 41, “eTSEC IEEE 1588 AC Timing Specifications.” The maximum value of tT1588CLK
is defined in terms of TTX_CLK, which is the maximum clock cycle period of the equivalent interface speed that the eTSEC1
port is running at. When eTSEC1 is configured to operate in the parallel mode, the TTX_CLK is the maximum clock period
of the TSEC1_TX_CLK. When eTSEC1 operates in SGMII mode, the maximum value of tT1588CLK is defined in terms of
the recovered clock from SGMII SerDes. For example, for SGMII 10/100/1000 Mbps modes, the maximum value of
tT1588CLK will be 3600, 360, 72 ns respectively. See the MPC8572E PowerQUICC III Integrated Communications
Processor Reference Manual for detailed description of TMR_CTRL registers.
2. It needs to be at least two times of the clock period of the clock selected by TMR_CTRL[CKSEL].
Table 42. MII Management DC Electrical Characteristics(LVDD/TVDD=3.3 V)
Parameter
Symbol
Min
Max
Unit
Notes
Supply voltage (3.3 V)
LVDD/TVDD
3.13
3.47
V
1, 2
Output high voltage
(LVDD/TVDD = Min, IOH = –1.0 mA)
VOH
2.10
OVDD + 0.3
V
—
Output low voltage
(LVDD/TVDD =Min, IOL = 1.0 mA)
VOL
GND
0.50
V
—
Input high voltage
VIH
2.0
—
V
—
Input low voltage
VIL
—0.90
V
—
Input high current
(LVDD/TVDD = Max, VIN
3 = 2.1 V)
IIH
—40
μA—
Table 41. eTSEC IEEE 1588 AC Timing Specifications (continued)
At recommended operating conditions with LVDD/TVDD of 3.3 V ± 5% or 2.5 V ± 5%
Parameter/Condition
Symbol
Min
Typ
Max
Unit
Note
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