MCF5480 Freescale Semiconductor, Inc, MCF5480 Datasheet - Page 23

• Manufacturer Part Number: MCF5480
• Description: Mcf548x Coldfire Microprocessor
• Manufacturer: Freescale Semiconductor, Inc

11.2
Freescale Semiconductor
Num
Num
M5
M6
M7
M8
M1
M2
M3
M4
MII Transmit Signal Timing
RXD[3:0], RXDV, RXER to RXCLK setup
RXCLK to RXD[3:0], RXDV, RXER hold
RXCLK pulse width high
RXCLK pulse width low
TXCLK to TXD[3:0], TXEN, TXER invalid
TXCLK to TXD[3:0], TXEN, TXER valid
TXCLK pulse width high
TXCLK pulse width low
TXD[3:0] (Outputs)
RXD[3:0] (Inputs)
RXCLK (Input)
TXCLK (Input)
RXDV,
RXER
TXEN,
TXER
Figure 20. MII Transmit Signal Timing Diagram
Figure 19. MII Receive Signal Timing Diagram
Characteristic
MCF548x ColdFire
Characteristic
Table 16. MII Transmit Signal Timing
Table 15. MII Receive Signal Timing
M5
M1
M3
M7
®
Microprocessor, Rev. 4
M2
M6
M4
M8
35%
35%
35%
35%
Min
Min
—
5
0
Fast Ethernet AC Timing Specifications
5
Max
65%
65%
Max
65%
65%
25
—
—
—
RXCLK period
RXCLK period
TXCLK period
TXCLK period
Unit
Unit
ns
ns
ns
ns
23