MPC5125YVN400 Freescale Semiconductor, MPC5125YVN400 Datasheet - Page 407

• Manufacturer Part Number: MPC5125YVN400
• Description: IC MCU 32BIT E300 324TEPBGA
• Manufacturer: Freescale Semiconductor
• Series: MPC51xxr

Specifications of MPC5125YVN400

• Core Processor: e300
• Core Size: 32-Bit
• Speed: 400MHz
• Connectivity: CAN, EBI/EMI, Ethernet, I²C, USB OTG
• Peripherals: DMA, WDT
• Number Of I /o: 64
• Program Memory Type: ROMless
• Ram Size: 32K x 8
• Voltage - Supply (vcc/vdd): 1.33 V ~ 1.47 V
• Oscillator Type: External
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 324-PBGA
• Processor Series: MPC51xx
• Core: e300
• Data Bus Width: 32 bit
• Development Tools By Supplier: TWR-MPC5125-KIT, TWR-SER, TWR-ELEV, TOWER
• Maximum Clock Frequency: 400 MHz
• Operating Supply Voltage: 1.4 V
• Maximum Operating Temperature: + 125 C
• Mounting Style: SMD/SMT
• Data Ram Size: 32 KB
• I/o Voltage: 3.3 V
• Interface Type: CAN, I2C
• Minimum Operating Temperature: - 40 C
• Program Memory Size: 32 bit
• Cpu Speed: 400MHz
• Embedded Interface Type: CAN, I2C, SPI, UART, USB
• Digital Ic Case Style: TEPBGA
• No. Of Pins: 324
• Rohs Compliant: Yes
• Cpu Family: MPC5xx
• Device Core Size: 32b
• Frequency (max): 400MHz
• Total Internal Ram Size: 32KB
• Instruction Set Architecture: RISC
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 324
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -
• Data Converters: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

14.6.8
The FEC also supports RMII loopback. In this mode, transmit data is sent to the RMII receive logic and
out the FECn_TXD[1:0] pins. To enable RMII loopback mode, set the ETH_R_CNTRL[RMII_MODE],
ETH_R_CNTRL[MII_MODE], ETH_R_CNTRL[RMII_LOOP], and ETH_X_CNTRL[FDEN] bits;
clear the ETH_R_CNTRL[RMII_ECHO] and ETH_R_CNTRL[LOOP] bits.
14.6.9
The FEC also supports RMII echo mode, which transmits data on FECn_TXD[1:0]/RMII_TX[1:0] as it is
received on FECn_RXD[1:0]/RMII_RX[1:0]. To enable RMII loopback mode, set the
ETH_R_CNTRL[RMII_MODE,] ETH_R_CNTRL[MII_MODE], and ETH_R_CNTRL[RMII_ECHO]
bits; clear the ETH_R_CNTRL[RMII_ECHO], ETH_R_CNTRL[LOOP], and
ETH_R_CNTRL[RMII_LOOP] bits.
14.6.10 Ethernet Error-Handling Procedure
The Ethernet controller reports frame reception and transmission error conditions using the FEC receive
BDs, the ETH_IEVENT register and the MIB block counters.
14.6.11 Transmission Errors
Freescale Semiconductor
•
Transmitter Underrun
RMII Loopback
RMII Echo
Transmit
Receive
Transmit
Receive
FEC
FEC
MPC5125 Microcontroller Reference Manual, Rev. 2
Figure 14-32. RMII Loopback Mode
Figure 14-33. RMII Echo Mode
RMII
RMII
TX
RX
TX
RX
FECn_TXD[1:0]/
FECn_TXD[1:0]/
RMII_TX[1:0]
FECn_RXD[1:0]/
RMII_RX[1:0]
RMII_TX[1:0]
Fast Ethernet Controller (FEC)
14-51