參數(shù)資料
型號: MC8641DVU1250HC
廠商: FREESCALE SEMICONDUCTOR INC
元件分類: 微控制器/微處理器
英文描述: 32-BIT, 166.66 MHz, MICROPROCESSOR, CBGA1023
封裝: 33 X 33 MM, ROHS COMPLIANT, CERAMIC, BGA-1023
文件頁數(shù): 69/130頁
文件大小: 1493K
代理商: MC8641DVU1250HC
MPC8641 and MPC8641D Integrated Host Processor Hardware Specifications, Rev. 2
Freescale Semiconductor
43
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, “Ethernet: Enhanced Three-Speed
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 38.
9.2
MII Management AC Electrical Specifications
Table 39 provides the MII management AC timing specifications.
Table 38. MII Management DC Electrical Characteristics
Parameter
Symbol
Min
Max
Unit
Supply voltage (3.3 V)
OVDD
3.135
3.465
V
Output high voltage
(OVDD = Min, IOH = –1.0 mA)
VOH
2.10
V
Output low voltage
(OVDD =Min, IOL = 1.0 mA)
VOL
—0.50
V
Input high voltage
VIH
1.70
V
Input low voltage
VIL
—0.90
V
Input high current
(OVDD = Max, VIN
1 = 2.1 V)
IIH
—40
μA
Input low current
(OVDD = Max, VIN = 0.5 V)
IIL
–600
μA
Note:
1. Note that the symbol VIN, in this case, represents the OVIN symbol referenced in Table 1 and Table 2.
Table 39. MII Management AC Timing Specifications
At recommended operating conditions with OVDD is 3.3 V ± 5%.
Parameter/Condition
Symbol 1
Min
Typ
Max
Unit
Notes
MDC frequency
fMDC
2.5
9.3
MHz
2, 4
MDC period
tMDC
80
400
ns
MDC clock pulse width high
tMDCH
32
ns
MDC to MDIO valid
tMDKHDV
16*tMPXCLK
——
ns
5
MDC to MDIO delay
tMDKHDX
10
16*tMPXCLK
ns
3, 5
MDIO to MDC setup time
tMDDVKH
5—
ns
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