參數(shù)資料
型號: MPC8378E-MDS-PB
廠商: Freescale Semiconductor
文件頁數(shù): 60/128頁
文件大?。?/td> 0K
描述: BOARD PROCESSOR FOR MDS S
標(biāo)準(zhǔn)包裝: 1
類型: MPU
適用于相關(guān)產(chǎn)品: MPC8378
所含物品:
MPC8378E PowerQUICC II Pro Processor Hardware Specifications, Rev. 8
Freescale Semiconductor
37
8.4.1
MII Management DC Electrical Characteristics
The MDC and MDIO are defined to operate at a supply voltage of 2.5 V or 3.3 V. The DC electrical
characteristics for MDIO and MDC are provided in Table 36 and Table 37.
8.4.2
MII Management AC Electrical Specifications
This table provides the MII management AC timing specifications.
Table 36. MII Management DC Electrical Characteristics When Powered at 2.5 V
Parameter
Conditions
Symbol
Min
Max
Unit
Supply voltage (2.5 V)
LVDD1
2.37
2.63
V
Output high voltage
IOH = –1.0 mA
LVDD1 = Min
VOH
2.00
LVDD1 + 0.3
V
Output low voltage
IOL = 1.0 mA
LVDD1 = Min
VOL
GND – 0.3
0.40
V
Input high voltage
LVDD1 = Min
VIH
1.7
V
Input low voltage
LVDD1 = Min
VIL
–0.3
0.70
V
Input high current
VIN = LVDD1
IIH
—20
μA
Input low current
VIN = LVDD1
IIL
–15
μA
Table 37. MII Management DC Electrical Characteristics When Powered at 3.3 V
Parameter
Conditions
Symbol
Min
Max
Unit
Supply voltage (3.3 V)
LVDD1
3.135
3.465
V
Output high voltage
IOH = –1.0 mA
LVDD1 = Min
VOH
2.10
LVDD1 +0.3
V
Output low voltage
IOL = 1.0 mA
LVDD1 = Min
VOL
GND
0.50
V
Input high voltage
VIH
2.00
V
Input low voltage
VIL
—0.80
V
Input high current
LVDD1 = Max
VIN
1 = 2.1 V
IIH
—30
μA
Input low current
LVDD1 = Max
VIN = 0.5 V
IIL
–600
μA
Table 38. MII Management AC Timing Specifications
Parameter
Symbol1
Min
Typical
Max
Unit
Note
MDC frequency
fMDC
—2.5
MHz
MDC period
tMDC
80
400
ns
MDC clock pulse width high
tMDCH
32
ns
MDC to MDIO valid
tMDKHDV
2
× (tplb_clk × 8)
ns
MDC to MDIO delay
tMDKHDX
10
2
× (tplb_clk × 8)
ns
MDIO to MDC setup time
tMDDVKH
5—
ns
MDIO to MDC hold time
tMDDXKH
0—
ns
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