MCIMX286CVM4B Freescale Semiconductor, MCIMX286CVM4B Datasheet - Page 1746

• Manufacturer Part Number: MCIMX286CVM4B
• Description: IC MPU I.MX286 289MAPBGA
• Manufacturer: Freescale Semiconductor
• Series: i.MX28r

Specifications of MCIMX286CVM4B

• Core Processor: ARM9
• Core Size: 32-Bit
• Speed: 454MHz
• Connectivity: CAN, EBI/EMI, Ethernet, I²C, MMC, SmartCard, SPI, SSI, UART/USART, USB OTG
• Peripherals: DMA, I²S, LCD, POR, PWM, WDT
• Program Memory Size: 128KB (32K x 32)
• Program Memory Type: Mask ROM
• Ram Size: 32K x 32
• Voltage - Supply (vcc/vdd): 1.25 V ~ 5.25 V
• Data Converters: A/D 17x12b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 289-LFBGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Number Of I /o: -
• Eeprom Size: -
• Lead Free Status / Rohs Status: Compliant

Operation
1746
BV_FLD(APBX_CHn_CMD, COMMAND, DMA_READ)),
(reg32_t) &eeprom_command_buffer[0],
BF_I2C_CTRL0_POST_SEND_STOP(BV_I2C_CTRL0_POST_SEND_STOP_SEND_STOP)|
BF_I2C_CTRL0_PRE_SEND_START(BV_I2C_CTRL0_PRE_SEND_START_SEND_START) |
BF_I2C_CTRL0_MASTER_MODE(BV_I2C_CTRL0_MASTER_MODE_MASTER)
BF_I2C_CTRL0_DIRECTION(BV_I2C_CTRL0_DIRECTION_TRANSMIT)
BF_I2C_CTRL0_XFER_COUNT(6)
};
void SendFiveBytes(){
// Reset the APBX dma channels associated with I2C.
reset_mask = BF_APBX_CTRL0_RESET_CHANNEL((1 << I2C_CHANNEL_NUM));
HW_APBX_CTRL0_SET(reset_mask);
// Poll for reset to clear the channel.
for (retries = 0; retries < RESET_TIMEOUT; retries++)
if ((reset_mask & HW_APBX_CTRL0_RD()) == 0)
break;
if( retries == RESET_TIMEOUT) exit(1);
// Setup dma channel configuration.
BF_WRn(APBX_CHn_NXTCMDAR,I2C_CHANNEL_NUM,
CMD_ADDR,(reg32_t) I2C_DMA_CMD);
BF_WR(APBX_CTRL1, CH3_CMDCMPLT_IRQ, 0); // clear interrupt
// Start the dma channel by incrementing semaphore.
BF_WRn(APBX_CHn_SEMA, I2C_CHANNEL_NUM, INCREMENT_SEMA, 1);
// Poll for the semaphore to decrement to zero on the DMA channel.
for (retries = 0; retries < SEMAPHORE_TIMEOUT; retries++)
if (0 == BF_RDn(APBX_CHn_SEMA, I2C_CHANNEL_NUM, PHORE))
break;
// a frame with one byte of address and five bytes of data was just sent
}
i.MX28 Applications Processor Reference Manual, Rev. 1, 2010
Freescale Semiconductor, Inc.
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