MPC5125YVN400 Freescale Semiconductor, MPC5125YVN400 Datasheet - Page 812

• 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

Secure Digital Host Controller (SDHC)
writing and holds the DAT line low if its write buffer is full and unable to accept new data from a new
WRITE_BLOCK command. The host may poll the status of the card with a SEND_STATUS command
(CMD13) at any time, and the card responds with its status. The status bit READY_FOR_DATA indicates
the card can accept new data or the write process remains in progress. The host may deselect the card by
issuing CMD7 (to select a different card) which displaces the card into the disconnect state and releases
the DAT line without interrupting the write operation. When re-selecting the card, it reactivates the busy
indication by pulling DAT to low if programming remains in progress and the write buffer is unavailable.
The software flow to write to card with DMA enable is:
If the write operation is without DMA, the system needs to write data to the buffer through buffer write
ready interrupt or by polling the buffer write ready status bit (STATUS[BUF_WR_RDY]). For high
performance, data transfer using DMA is preferred.
28-40
1. Start MMC_SD_CLK if it is stopped.
2. Check the card status, wait until card is ready for data.
3. For SD/MMC, set the card block length, using SET_BLOCKLEN (CMD16).
4. Set the SDHC block length register to be same as block length set to the card in Step 3. For SDIO,
5. Set the SDHC Number of Blocks (SDHC_NOB) register. NOB is 1 for single block write or
6. Disable the buffer ready interrupt, configure the DMA setting and enable the SDHC DMA channel:
7. Check the card status and wait until the card is ready for data.
8. Set the SDHC_CMD register to any of the following:
9. Set the SDHC Command Argument (SDHC_ARG) register.
10. Set the SDHC Command Data Control (SDHC_CMD_DAT_CONT) register.
11. Wait for end command response and check if there any CRC error or timeout error.
12. Wait for DMA done.
13. Check for Write_OP_DONE and check status bit to see if write CRC error occurred.
14. Send STOP_TRANSMISSION command to card if the write command is
if the CMD53 is in byte mode, the SDHC block length register should be set according to bytes
count in CMD53; if the CMD53 is in block mode, the SDHC block length register should be set
according to the block size in CCCR registers.
CMD53 in byte mode for SDIO.
— Write 1 to bit[3] of INT_MASK register in SDHC.
— Set DMA destination to be SDHC_Buffer Access register.
— Set DMA destination port size to be 32-bit.
— Set DMA Burst length to be 16 bytes in 1-bit mode or 64 bytes in 4-bit mode.
— Set DMA transfer count to be number of bytes which is a multiple of the Block_length
— CMD24(WRITE_BLOCK), or
— CMD25(WRITE_MULTIPLE_BLOCK), or
— CMD53 in byte mode or block mode
WRITE_MULTIPLE_BLOCK (CMD25).
(NOB × blk_len = total number of bytes).
MPC5125 Microcontroller Reference Manual, Rev. 2
Freescale Semiconductor