参数资料
型号: MC8640DHX1250HE
厂商: FREESCALE SEMICONDUCTOR INC
元件分类: 微控制器/微处理器
英文描述: 32-BIT, 1250 MHz, MICROPROCESSOR, CBGA1023
封装: 33 X 33 MM, CERAMIC, FCBGA-1023
文件页数: 67/130页
文件大小: 1495K
代理商: MC8640DHX1250HE
MPC8640 and MPC8640D Integrated Host Processor Hardware Specifications, Rev. 3
Freescale Semiconductor
41
Ethernet Management Interface Electrical Characteristics
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
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
MDIO to MDC hold time
tMDDXKH
0—
ns
MDC rise time
tMDCR
10
ns
4
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MC8640DHX1067NC 32-BIT, 1067 MHz, MICROPROCESSOR, CBGA1023
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