MPC860DP FREESCALE [Freescale Semiconductor, Inc], MPC860DP Datasheet - Page 69

• Manufacturer Part Number: MPC860DP
• Description: Hardware Specifications
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

13.2 MII Transmit Signal Timing (MII_TXD[3:0], MII_TX_EN,
The transmitter functions correctly up to a MII_TX_CLK maximum frequency of 25 MHz +1%. There is no
minimum frequency requirement. In addition, the processor clock frequency must exceed the MII_TX_CLK
frequency – 1%.
Table 30
Figure 72
Freescale Semiconductor
Num
M5
M6
M7
M8
MII_TX_ER, MII_TX_CLK)
provides information on the MII transmit signal timing.
shows the MII transmit signal timing diagram.
MII_RXD[3:0] (Inputs)
MII_RX_DV
MII_RX_ER
MII_RX_CLK (Input)
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
MII_TX_CLK pulse width low
Figure 71. MII Receive Signal Timing Diagram
MPC860 Family Hardware Specifications, Rev. 7
Characteristic
Table 30. MII Transmit Signal Timing
M1
M2
M3
M4
35%
Min
35
—
5
FEC Electrical Characteristics
Max
65%
65%
25
—
MII_TX_CLK
MII_TX_CLK
period
period
Unit
ns
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