參數(shù)資料
型號: MCIMX514AJM6C
廠商: FREESCALE SEMICONDUCTOR INC
元件分類: 微控制器/微處理器
英文描述: SPECIALTY MICROPROCESSOR CIRCUIT, PBGA529
封裝: 19 X 19 MM, 0.8 MM PITCH, ROHS COMPLIANT, BGA-529
文件頁數(shù): 146/172頁
文件大?。?/td> 2218K
代理商: MCIMX514AJM6C
Electrical Characteristics
i.MX51A Automotive and Infotainment Applications Processors, Rev. 4
Freescale Semiconductor
75
Figure 42. MII Receive Signal Timing Diagram
4.7.4.2
MII Transmit Signal Timing
The MII transmit signal timing affects the FEC_TXD[3:0], FEC_TX_EN, FEC_TX_ER, and
FEC_TX_CLK signals. The transmitter functions correctly up to a FEC_TX_CLK maximum frequency
of 25 MHz + 1%. There is no minimum frequency requirement. In addition, the processor clock frequency
must exceed twice the FEC_TX_CLK frequency. Table 71 lists MII transmit channel timing parameters
and Figure 43 shows MII transmit signal timing diagram for the values listed in Table 71.
.
Figure 43. MII Transmit Signal Timing Diagram
Table 71. MII Transmit Signal Timing
Num
Characteristic1
1 FEC_TX_EN, FEC_TX_CLK, and FEC_TXD0 have the same timing in 10 Mbps 7-wire interface mode.
Min
Max
Unit
M5
FEC_TX_CLK to FEC_TXD[3:0], FEC_TX_EN, FEC_TX_ER invalid
5
ns
M6
FEC_TX_CLK to FEC_TXD[3:0], FEC_TX_EN, FEC_TX_ER valid
20
ns
M7
FEC_TX_CLK pulse width high
35%
65%
FEC_TX_CLK period
M8
FEC_TX_CLK pulse width low
35%
65%
FEC_TX_CLK period
FEC_RX_CLK (input)
FEC_RXD[3:0] (inputs)
FEC_RX_DV
FEC_RX_ER
M3
M4
M1
M2
FEC_TX_CLK (input)
FEC_TXD[3:0] (outputs)
FEC_TX_EN
FEC_TX_ER
M7
M8
M5
M6
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MCIMX514AJM6CR2 制造商:Freescale Semiconductor 功能描述:ELVIS 3.0 AUTO - Tape and Reel
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MCIMX515DJM8C 制造商:Freescale Semiconductor 功能描述:; LEADED PROCESS COMPATIBLE:YES; PEAK RE