參數(shù)資料
型號: MPC8544DS
廠商: Freescale Semiconductor
文件頁數(shù): 55/117頁
文件大小: 0K
描述: BOARD DEVELOPMENT SYSTEM 8544
標(biāo)準(zhǔn)包裝: 1
系列: PowerQUICC III™
類型: MPU
適用于相關(guān)產(chǎn)品: MPC8544
所含物品:
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MPC8544E PowerQUICC III Integrated Processor Hardware Specifications, Rev. 6
42
Freescale Semiconductor
Ethernet Management Interface Electrical Characteristics
9
Ethernet Management Interface Electrical
Characteristics
The electrical characteristics specified here apply to MII management interface signals MDIO
(management data input/output) and MDC (management data clock). The electrical characteristics for
GMII, RGMII, RMII, TBI, and RTBI are specified in “Section 8, “Enhanced Three-Speed Ethernet
9.1
MII Management DC Electrical Characteristics
The MDC and MDIO are defined to operate at a supply voltage of 3.3 V. The DC electrical characteristics
for MDIO and MDC are provided in Table 40.
9.2
MII Management AC Electrical Specifications
Table 41 provides the MII management AC timing specifications.
Table 40. MII Management DC Electrical Characteristics
Parameter
Symbol
Min
Max
Unit
Notes
Supply voltage (3.3 V)
OVDD
3.135
3.465
V
Output high voltage (OVDD = Min, IOH = –1.0 mA)
VOH
2.10
3.60
V
Output low voltage (OVDD = Min, IOL = 1.0 mA)
VOL
GND
0.50
V
Input high voltage
VIH
1.95
V
Input low voltage
VIL
—0.90
V
Input high current (OVDD = Max, VIN = 2.1 V)
IIH
—40
μA1
Input low current (OVDD = Max, VIN = 0.5 V)
IIL
–600
μA—
Note:
1. The symbol VIN, in this case, represents the OVIN symbol referenced in Table 1 and Table 2.
Table 41. MII Management AC Timing Specifications
At recommended operating conditions with OVDD is 3.3 V ± 5%.
Parameter/Condition
Symbol1
Min
Typ
Max
Unit
Notes
MDC frequency
fMDC
—2.5
MHz
2
MDC period
tMDC
—400
ns
MDC clock pulse width high
tMDCH
32
ns
MDC to MDIO delay
tMDKHDX
(16 × tplb_clk) – 3
(16 × tplb_clk) + 3
ns
3, 4
MDIO to MDC setup time
tMDDVKH
5—
ns
MDIO to MDC hold time
tMDDXKH
0—
ns
MDC rise time
tMDCR
——
10
ns
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