mcf52258 Freescale Semiconductor, Inc, mcf52258 Datasheet - Page 33

• Manufacturer Part Number: mcf52258
• Description: Mcf52259 Coldfire Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

2.10.2
2.10.3
Freescale Semiconductor
1
Num
E9
In MII mode, n = 3
Num
E6
E5
E7
E8
—
Transmit Signal Timing Specifications
Asynchronous Input Signal Timing Specifications
CRS, COL minimum pulse width
TXCLK frequency
TXCLK to TXD[n:0], TXEN, TXER invalid
TXCLK to TXD[n:0], TXEN, TXER valid
TXCLK pulse width high
TXCLK pulse width low
CRS, COL
TXCLK (Input)
RXCLK (Input)
TXD[n:0]
RXD[n:0]
TXEN,
TXER
Figure 8. MII Transmit Signal Timing Diagram
Figure 7. MII Receive Signal Timing Diagram
RXDV,
RXER
Figure 9. MII Async Inputs Timing Diagram
Characteristic
Characteristic
MCF52259 ColdFire Microcontroller, Rev. 1
Table 18. MII Transmit Signal Timing
Table 17. Transmit Signal Timing
E6
E9
1
1
E1
E4
E8
Valid Data
Valid Data
E3
E2
35%
35%
Min
E7
—
—
E5
5
Min
1.5
MII Mode
65%
65%
Max
25
25
—
Max
—
Electrical Characteristics
TXCLK period
t
t
TXCLK
TXCLK
MHz
Unit
ns
ns
Unit
33