MPC862 MOTOROLA [Motorola, Inc], MPC862 Datasheet - Page 72
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MPC862
Manufacturer Part Number
MPC862
Description
Hardware Specifications
Manufacturer
MOTOROLA [Motorola, Inc]
Datasheet
1.MPC862.pdf
(88 pages)
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FEC Electrical Characteristics
FEC Electrical Characteristics
13.4
Table 32 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 76 shows the MII serial management channel timing diagram.
72
Num
M10
M11
M12
M13
M14
M15
MII_MDIO (input)
MII_MDC (output)
MII_MDIO (output)
MII_MDC falling edge to MII_MDIO output invalid (minimum
propagation delay)
MII_MDC falling edge to MII_MDIO output valid (max prop delay)
MII_MDIO (input) to MII_MDC rising edge setup
MII_MDIO (input) to MII_MDC rising edge hold
MII_MDC pulse width high
MII_MDC pulse width low
MII Serial Management Channel Timing (MII_MDIO,
MII_MDC)
Figure 76. MII Serial Management Channel Timing Diagram
Table 32. MII Serial Management Channel Timing
MPC862/857T/857DSL Hardware Specifications
Freescale Semiconductor, Inc.
For More Information On This Product,
Characteristic
M12
Go to: www.freescale.com
M13
M14
M10
M11
MM15
40%
40%
Min
10
—
0
0
60%
60%
Max
—
25
—
—
MII_MDC period
MII_MDC period
MOTOROLA
Unit
ns
ns
ns
ns