参数资料
型号: MPC5553EVBISYS
厂商: Freescale Semiconductor
文件页数: 43/68页
文件大小: 0K
描述: KIT EVAL ISYSTEMS MPC5553
标准包装: 1
类型: 微控制器
适用于相关产品: MPC5553
所含物品: 评估板和演示软件
相关产品: MPC5553MZQ132-ND - IC MCU MPC5553 REV A 324-PBGA
MPC5553MZP132-ND - IC MCU MPC5553 REV A 416-PBGA
MPC5553 Microcontroller Data Sheet, Rev. 4
Electrical Characteristics
Freescale Semiconductor
48
3.14.3
MII FEC Asynchronous Inputs Signal Timing
FEC_CRS and FEC_COL
Table 30 lists MII FEC asynchronous input signal timing.
Figure 30 shows MII FEC asynchronous input timing listed in Table 30.
Figure 30. MII FEC Asynchronous Inputs Timing Diagram
3.14.4
MII FEC Serial Management Channel Timing
FEC_MDIO and FEC_MDC
Table 31 lists MII FEC serial management channel timing. The FEC functions correctly with a maximum
FEC_MDC frequency of 2.5 MHz.
Figure 31 shows MII FEC serial management channel timing listed in Table 31.
Table 30. MII FEC Asynchronous Inputs Signal Timing
Spec
Characteristic
Min.
Max
Unit
9
FEC_CRS, FEC_COL minimum pulse width
1.5
FEC_TX_CLK period
Table 31. MII FEC Serial Management Channel Timing
Spec
Characteristic
Min.
Max
Unit
10
FEC_MDC falling-edge to FEC_MDIO output invalid
(minimum propagation delay)
0—
ns
11
FEC_MDC falling-edge to FEC_MDIO output valid
(maximum propagation delay)
—25
ns
12
FEC_MDIO (input) to FEC_MDC rising-edge setup
10
ns
13
FEC_MDIO (input) to FEC_MDC rising-edge hold
0
ns
14
FEC_MDC pulse-width high
40%
60%
FEC_MDC period
15
FEC_MDC pulse-width low
40%
60%
FEC_MDC period
FEC_CRS, FEC_COL
9
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