MPC855TZQ50D4 Freescale Semiconductor, MPC855TZQ50D4 Datasheet - Page 68

• Manufacturer Part Number: MPC855TZQ50D4
• Description: IC MPU POWERQUICC 50MHZ 357PBGA
• Manufacturer: Freescale Semiconductor
• Series: PowerQUICC Ir

Specifications of MPC855TZQ50D4

• Processor Type: MPC8xx PowerQUICC 32-Bit
• Speed: 50MHz
• Voltage: 3.3V
• Mounting Type: Surface Mount
• Package / Case: 357-PBGA
• Processor Series: MPC8xx
• Core: MPC8xx
• Data Bus Width: 32 bit
• Maximum Clock Frequency: 50 MHz
• Operating Supply Voltage: 2.5 V, 3.3 V
• Maximum Operating Temperature: + 95 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: 0 C
• Core Size: 32 Bit
• Program Memory Size: 8KB
• Cpu Speed: 50MHz
• Embedded Interface Type: Ethernet, I2C, SPI, UART
• Digital Ic Case Style: BGA
• No. Of Pins: 357
• Rohs Compliant: No
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Features: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

FEC Electrical Characteristics
13.2
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 73
68
Num
M5
M6
M7
M8
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
provides information on the MII transmit signal timing.
MII_TXD[3:0] (Outputs)
MII Transmit Signal Timing (MII_TXD[3:0], MII_TX_EN,
MII_TX_ER, MII_TX_CLK)
shows the MII transmit signal timing diagram.
MII_TX_CLK (Input)
RMII_REFCLK
MII_TX_EN
MII_TX_ER
MPC860 PowerQUICC™ Family Hardware Specifications, Rev. 8
Figure 73. MII Transmit Signal Timing Diagram
Characteristic
Table 30. MII Transmit Signal Timing
M5
M6
M7
M8
35%
Min
—
35
5
Freescale Semiconductor
65%
65%
Max
—
25
MII_TX_CLK
MII_TX_CLK
period
period
Unit
ns