MPC5125YVN400 Freescale Semiconductor, MPC5125YVN400 Datasheet - Page 806

• 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)
As mentioned in the above section, MMC and SD are similar products. Other than the 4x bandwidth, they
are programmed similarly. The following example shows how to initialize and perform content access and
content protection on the cards.
To improve the readability, use a program-like function for the example.
28.5.1
The SDHC_STR_STP_CLK register controls the MMC_SD_CLK clock to the card. The clock should be
supplied to the card for:
The steps below show how to start the MMC_SD_CLK to card:
The steps below show how to stop MMC_SD_CLK to card (it is not recommended to stop clock by
software):
28.5.2
Below is the program flow to submit a command to the card(s). Targeted command is <command_no>.
Corresponding argument is <arg_no>. The command configuration required is <cmd_dat_cont>. The
interrupt control used in software is <int_Control_value>.
The steps below show how to submit a command to the card:
This following is a function defining command submission. This function is used in the examples in the
following sub-section:
28-34
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•
•
1. Write 0x2 to the SDHC_STR_STP_CLK register.
2. Poll the SDHC_STATUS[CARD_BUS_CLK_RUN] bit, and wait until the clock starts.
1. Write 0x1 to the SDHC_STR_STP_CLK register.
2. Poll the SDHC_STATUS[CARD_BUS_CLK_RUN] bit, and wait until the clock is stopped.
1. Start MMC_SD_CLK if it is stopped.
2. Enable the END_CMD_RESP interrupt by writing 0 to SDHC_INT_CNTR[END_CMD_RESP].
3. Set command number to the SDHC_CMD register.
4. Set the command argument to the SDHC_ARG register.
5. Set the appropriate value to the SDHC_CMD_DAT_CONT register.
6. Wait for the command response end interrupt and check for the response CRC/time-out status.
7. Read the response FIFO to check the response. Read three or eight times from the response FIFO
send_cmd_wait_resp(command_no, arg, cmd_dat_cont, int_cntr_value)
{
write_reg(COMMAND, <command_no>); // 1. configure the CMD
write_reg(SDHC_ARG, <arg_no>); // 2. configure the command argument
Submitting command to card and receiving response
Transferring data between SDHC and the card
Detecting an interrupt from a SD card in 4-bit
access register, depending upon whether the response is 48-bit or 136-bit.
MMC_SD_CLK Control
Command Submit – Response Receive Basic Operation
MPC5125 Microcontroller Reference Manual, Rev. 2
Freescale Semiconductor