MPC855 datasheet(69/76 Pages) MOTOROLA

номер детали	MPC855

подробное описание детали	Family Hardware Specifications

PDF	76 Pages

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производитель	MOTOROLA [Motorola, Inc]

домашняя страница	http://www.freescale.com

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MOTOROLA

MPC860 Family Hardware Speciﬁcations

MII Serial Management Channel Timing (MII_MDIO, MII_MDC)

13.4 MII Serial Management Channel Timing

(MII_MDIO, MII_MDC)

Table 13-30 provides information on the MII serial management channel signal timing. The

FEC functions correctly with a maximum MDC frequency in excess of 2.5 MHz. The exact

upper bound is under investigation.

Figure 13-73 shows the MII serial management channel timing diagram.

Figure 13-73. MII Serial Management Channel Timing Diagram

Table 13-30. MII Serial Management Channel Timing

Num

Characteristic

Min

Max

Unit

M10

MII_MDC falling edge to MII_MDIO output invalid (minimum

propagation delay)

0—

M11

MII_MDC falling edge to MII_MDIO output valid (max prop delay)

—

M12

MII_MDIO (input) to MII_MDC rising edge setup

—

M13

MII_MDIO (input) to MII_MDC rising edge hold

—

M14

MII_MDC pulse width high

40%

60%

MII_MDC

period

M15

MII_MDC pulse width low

40%

60%

MII_MDC

period

M11

MII_MDC (Output)

MII_MDIO (Output)

M12

M13

MII_MDIO (Input)

M10

M14

MM15

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