mcf5272 Freescale Semiconductor, Inc, mcf5272 Datasheet - Page 511

• Manufacturer Part Number: mcf5272
• Description: Mcf5272 Coldfire Integrated Microprocessor User
• Manufacturer: Freescale Semiconductor, Inc

1
MOTOROLA
23.6.3 MII Async Inputs Signal Timing (CRS and COL)
Table 23-13 lists MII asynchronous inputs signal timing.
Figure 23-13 shows MII asynchronous input timings listed in Table 23-13.
23.6.4 MII Serial Management Channel Timing (MDIO and
Table 23-14 lists MII serial management channel timings. The FEC functions correctly
with a maximum MDC frequency of 2.5 MHz.
Num
E_COL has the same timing in 10 Mbit 7-wire interface mode.
M9
1
Num
M10 MDC falling edge to MDIO output invalid (minimum propagation delay) 0
M11 MDC falling edge to MDIO output valid (max prop delay)
M12 MDIO (input) to MDC rising edge setup
M13 MDIO (input) to MDC rising edge hold
M14 MDC pulse width high
M15 MDC pulse width low
E_TxD[3:0] (outputs)
MDC)
E_CRS, E_COL minimum pulse width
E_TxCLK (input)
E_TxEN
E_TxER
E_CRS, E_COL
Table 23-14. MII Serial Management Channel Timing
Figure 23-12. MII Transmit Signal Timing Diagram
Figure 23-13. MII Async Inputs Timing Diagram
Table 23-13. MII Async Inputs Signal Timing
Characteristic
Chapter 23. Electrical Characteristics
Characteristic
M5
M6
M7
M9
Fast Ethernet AC Timing Specifications
1.5
M8
Min
—
40% 60% MDC period
40% 60% MDC period
—
10
0
Min
Max
—
25
—
—
Max
E_TxCLK period
nS
nS
nS
nS
Unit
Unit
23-17