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IMX7SCEC 데이터시트(PDF) 85 Page - NXP Semiconductors

부품명 IMX7SCEC
상세설명  i.MX 7Solo Family
PDF  152 Pages
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제조업체  NXP [NXP Semiconductors]
홈페이지  http://www.nxp.com
Logo NXP - NXP Semiconductors

IMX7SCEC 데이터시트(HTML) 85 Page - NXP Semiconductors

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Electrical characteristics
i.MX 7Solo Family of Applications Processors Datasheet, Rev. 5, 07/2017
NXP Semiconductors
85
4.10.3.1.3
MII asynchronous inputs signal timing (ENET_CRS and ENET_COL)
Figure 53 shows MII asynchronous input timings. Table 61 describes the timing parameter (M9) shown in
the figure.
Figure 53. MII async inputs timing diagram
1 ENET_COL has the same timing in 10-Mbit 7-wire interface mode.
4.10.3.1.4
MII Serial management channel timing (ENET_MDIO and ENET_MDC)
The MDC frequency is designed to be equal to or less than 2.5 MHz to be compatible with the IEEE 802.3
MII specification. However the ENET can function correctly with a maximum MDC frequency of
15 MHz.
Figure 54 shows MII asynchronous input timings. Table 62 describes the timing parameters (M10–M15)
shown in the figure.
Figure 54. MII serial management channel timing diagram
Table 61. MII asynchronous inputs signal timing
ID
Characteristic
Min.
Max.
Unit
M91
ENET_CRS to ENET_COL minimum pulse width
1.5
—
ENET_TX_CLK period
ENET_CRS, ENET_COL
M9
ENET_MDC (output)
ENET_MDIO (output)
M14
M15
M10
M11
M12
M13
ENET_MDIO (input)



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