MPC5125YVN400 Freescale Semiconductor, MPC5125YVN400 Datasheet - Page 809

• 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

write_reg(SDHC_STR_STP_CLK, 0x1);
write_reg(SDHC_STR_STP_CLK, 0x1);
write_reg(SDHC_STR_STP_CLK, 0x1);
write_reg(SDHC_STR_STP_CLK, 0x1);// 2. write 0x1 to SDHC_STR_STP_CLK 8 times;
write_reg(SDHC_STR_STP_CLK, 0x2); // 3. write 0x2 to SDHC_STR_STP_CLK to start clock;
while (!STATUS[8]); // 4. wait clock on
write_reg(SDHC_CLK_RATE, 0x3F);
write_reg(SDHC_READ_TO, 0x2DB4); // 6. set READ timeout register
send_cmd_wait_resp(CMD_GO_IDLE_STATE, 0x0,0x80, 0x40); //7. reset the card with CMD0
}
28.5.3.3
All cards are able to establish communication with the host using any operation voltage in the allowed
voltage range specified in the standard. However, the supported minimum and maximum voltages are
defined in the operation conditions register (OCR) and may not cover the whole range. Cards that store the
CID and CSD data in the preload memory can only communicate this information under data transfer V
conditions. If the host and card have non-compatible voltage ranges, the card cannot complete the
identification cycle nor send CSD data.
Therefore, a special command Send_Op_Cont (CMD1 for MMC), a SD_Send_Op_Cont (CMD41 for SD
Memory), and a IO_Send_Op_Cont (CMD5 for SD I/O) provide a mechanism to identify and reject cards
which do not match the voltage range desired by the host. The host accomplishes this by sending the
required voltage window as the operand of this command. Cards which cannot perform data transfer in the
specified range must disable themselves from further bus operations and go into the inactive state. By
omitting voltage range in the command, the host can query each card and determine the common voltage
range before sending out-of-range cards into inactive state. This query should be used if the host can select
a common voltage range or if a notification to the application of non-usable cards in the stack is desired.
The following steps show how to perform voltage validation when a card is inserted:
Freescale Semiconductor
voltage_validation(voltage_range_arguement)
{
send_cmd_wait_resp(IO_SEND_OP_COND, 0x0, 0x04, 0x40); // CMD5, send SDIO operation
voltage, command argument is zero
if(End Command Response true & No. of IO functions> 0)// it is SDIO and have IO function
{IORDY = 0;
while(!(IORDY in I/O ORC response)) {// set voltage range for each IO
send_cmd_wait_resp(IO_SEND_OP_COND, voltage_range_arguement, 0x04, 0x40);}
if(Memory Present flag true)
Card = combo; // that is, SDIO + SD Memory, need to set operation voltage to memory
portion as well
send_cmd_wait_resp(APP_CMD, 0x0, 0x01, 0x40);// CMD55, Application Command follows
send_cmd_wait_resp(SD_APP_OP_COND, voltage_range_argument, 0x01, 0x40);//ACMD41
else
Card = sdio;
// if No response to CMD5 IO_SEND_OP_COND or No. of IO Function is zero in response
else// the card should be SD or MMC
{send_cmd_wait_resp(APP_CMD, 0x0, 0x01, 0x40);// CMD55, Application Command follows
Voltage Validation
MPC5125 Microcontroller Reference Manual, Rev. 2
// 5. Set the lowest clock for initialization
Secure Digital Host Controller (SDHC)
28-37
DD