MPC852T datasheet(58/80 Pages) FREESCALE

tên linh kiện	MPC852T

Giải thích chi tiết về linh kiện	Hardware Specifications

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MPC852T PowerQUICC™ Hardware Specifications, Rev. 4

Freescale Semiconductor

FEC Electrical Characteristics

Table 26 provides information about the MII transmit signal timing,.

Figure 60 shows the MII transmit signal timing diagram.

Figure 60. MII Transmit Signal Timing Diagram

15.3

MII Async Inputs Signal Timing (MII_CRS, MII_COL)

Table 27 provides information about the MII async inputs signal timing.

Figure 61 shows the MII asynchronous inputs signal timing diagram.

Figure 61. MII Async Inputs Timing Diagram

Table 26. MII Transmit Signal Timing

Num

Characteristic

Min

Max

Unit

MII_TX_CLK to MII_TXD[3:0], MII_TX_EN, MII_TX_ER invalid

—

MII_TX_CLK to MII_TXD[3:0], MII_TX_EN, MII_TX_ER valid

—

MII_TX_CLK pulse width high

35%

65%

MII_TX_CLK period

MII_TX_CLK pulse width low

35%

65%

MII_TX_CLK period

Table 27. MII Async Inputs Signal Timing

Num

Characteristic

Min

Max

Unit

MII_CRS, MII_COL minimum pulse width

1.5

—

MII_TX_CLK period

MII_TX_CLK (Input)

MII_TXD[3:0] (Outputs)

MII_TX_EN

MII_TX_ER

MII_CRS, MII_COL

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