MCF5272VF66 Freescale, MCF5272VF66 Datasheet - Page 502

• Manufacturer Part Number: MCF5272VF66
• Manufacturer: Freescale

Specifications of MCF5272VF66

• Family Name: MCF5xxx
• Device Core: ColdFire
• Device Core Size: 32b
• Frequency (max): 66MHz
• Instruction Set Architecture: RISC
• Supply Voltage 1 (typ): 3.3V
• Operating Temp Range: 0C to 70C
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Pin Count: 196
• Package Type: MA-BGA
• Lead Free Status / RoHS Status: Not Compliant

Electrical Characteristics
23.6.2
Table 23-12
The transmitter functions correctly up to a E_TxCLK maximum frequency of 25 MHz +1%. There is no
minimum frequency requirement. In addition, the processor clock frequency must exceed twice the
E_TxCLK frequency.
The transmit outputs (E_TxD[3:0], E_TxEN, E_TxER) can be programmed to transition from either the
rising or falling edge of E_TxCLK, and the timing is the same in either case. This options allows the use
of non-compliant MII PHYs.
Refer to the Ethernet chapter for details of this option and how to enable it.
1
Figure 23-12
23-18
E_TxCLK, ETxD0, and E_TxEN have the same timing in 10 Mbit 7-wire interface mode.
Num
M5
M6
M7
M8
E_TxCLK to E_TxD[3:0], E_TxEN, E_TxER invalid
E_TxCLK to E_TxD[3:0], E_TxEN, E_TxER valid
E_TxCLK pulse-width high
E_TxCLK pulse-width low
E_TxD[3:0] (outputs)
MII Transmit Signal Timing (E_TxD[3:0], E_TxEN, E_TxER,
E_TxCLK)
lists MII transmit channel timings.
E_TxCLK (input)
shows MII transmit signal timings listed in
E_TxEN
E_TxER
MCF5272 ColdFire
Figure 23-12. MII Transmit Signal Timing Diagram
Characteristic
Table 23-12. MII Transmit Signal Timing
®
Integrated Microprocessor User’s Manual, Rev. 3
1
M5
M6
M7
Table
23-12.
M8
5
—
35%
35%
Min
—
25
65%
65%
Max
Freescale Semiconductor
nS
nS
E_TxCLK period
E_TxCLK period
Unit