MCIMX281AVM4B Freescale Semiconductor, MCIMX281AVM4B Datasheet - Page 1274

• Manufacturer Part Number: MCIMX281AVM4B
• Description: IC MPU I.MX28 1.2 289MAPBGA
• Manufacturer: Freescale Semiconductor
• Series: i.MX28r

Specifications of MCIMX281AVM4B

• 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: Supplier Unconfirmed

Programming the BCH/GPMI Interfaces
write[2].dma_bar = &nand_cmd_addr_buffer[6];
command
// 3 words sent to the GPMI
write[2].gpmi_ctrl0 = BV_FLD(GPMI_CTRL0, COMMAND_MODE, WRITE)
write[2].gpmi_compare = NULL;
eccctrl
write[2].gpmi_eccctrl = BV_FLD(GPMI_ECCCTRL, ENABLE_ECC, DISABLE); // disable the ECC block
//----------------------------------------------------------------------------
// Descriptor 4: wait for ready (CLE)
//----------------------------------------------------------------------------
write[3].dma_nxtcmdar = &write[4];
write[3].dma_cmd = BF_APBH_CHn_CMD_XFER_COUNT
write[3].dma_bar = NULL;
// 1 word sent to the GPMI
write[3].gpmi_ctrl0 = BV_FLD(GPMI_CTRL0, COMMAND_MODE, WAIT_FOR_READY) | // wait for NAND ready
//----------------------------------------------------------------------------
// Descriptor 5: psense compare (time out check)
//----------------------------------------------------------------------------
write[4].dma_nxtcmdar = &write[5];
write[4].dma_cmd = BF_APBH_CHn_CMD_XFER_COUNT
write[4].dma_bar = dma_error_handler;
handler
//----------------------------------------------------------------------------
// Descriptor 6: issue NAND status command (CLE)
//----------------------------------------------------------------------------
write[5].dma_nxtcmdar = &write[6];
write[5].dma_cmd = BF_APBH_CHn_CMD_XFER_COUNT
1274
BV_FLD(APBH_CHn_CMD, COMMAND, DMA_READ);
BF_GPMI_CTRL0_CS
BF_APBH_CHn_CMD_WAIT4ENDCMD
BF_GPMI_CTRL0_CS
BF_APBH_CHn_CMD_NANDWAIT4READY(0) |
BF_APBH_CHn_CMD_NANDLOCK
BF_APBH_CHn_CMD_IRQONCMPLT
BF_APBH_CHn_CMD_CHAIN
BF_APBH_CHn_CMD_CMDWORDS
BF_APBH_CHn_CMD_WAIT4ENDCMD
BF_APBH_CHn_CMD_SEMAPHORE
BF_APBH_CHn_CMD_NANDWAIT4READY(1) |
BF_APBH_CHn_CMD_NANDLOCK
BF_APBH_CHn_CMD_IRQONCMPLT
BF_APBH_CHn_CMD_CHAIN
BV_FLD(APBH_CHn_CMD, COMMAND, NO_DMA_XFER);
BF_APBH_CHn_CMD_CMDWORDS
BF_APBH_CHn_CMD_WAIT4ENDCMD
BF_APBH_CHn_CMD_SEMAPHORE
BF_APBH_CHn_CMD_NANDWAIT4READY(0)
BF_APBH_CHn_CMD_NANDLOCK
BF_APBH_CHn_CMD_IRQONCMPLT
BF_APBH_CHn_CMD_CHAIN
BV_FLD(APBH_CHn_CMD, COMMAND, DMA_SENSE);
BF_APBH_CHn_CMD_CMDWORDS
i.MX28 Applications Processor Reference Manual, Rev. 1, 2010
BV_FLD(GPMI_CTRL0, WORD_LENGTH,
BV_FLD(GPMI_CTRL0, LOCK_CS,
BV_FLD(GPMI_CTRL0, ADDRESS,
BF_GPMI_CTRL0_ADDRESS_INCREMENT
BF_GPMI_CTRL0_XFER_COUNT
BV_FLD(GPMI_CTRL0, WORD_LENGTH,
BV_FLD(GPMI_CTRL0, LOCK_CS,
BV_FLD(GPMI_CTRL0, ADDRESS,
BF_GPMI_CTRL0_ADDRESS_INCREMENT
BF_GPMI_CTRL0_XFER_COUNT
(2)
(1)
(2)
(1) |
(0) |
(1) |
(0) |
(1) |
(1) |
(0) |
(0) |
(0) |
(1) |
(0)
(0)
(0)
(0)
(0)
(0)
(1)
(1)
(3)
// if sense check fails, branch to error
// field not used but necessary to set
|
8_BIT)
ENABLED)
NAND_CLE) |
(0)
(1);
8_BIT)
DISABLED)
NAND_DATA)
(0)
(0);
|
|
// point to byte 6, write execute
// point to the next descriptor
// no dma transfer
// send 1 word to the GPMI
// wait for command to finish before
//
// wait for nand to be ready
// relinquish nand lock
// follow chain to next command
// wait for command to finish before
| // must correspond to NAND CS used
| // must correspond to NAND CS used
// read data from DMA, write to NAND
// maintain resource lock
// follow chain to next command
// point to the next descriptor
// 1 byte command
// send 3 words to the GPMI
| // no dma transfer
| // no words sent to GPMI
| // do not wait to continue
|
|
|
|
| // follow chain to next command
// point to the next descriptor
// perform a sense check
| // write to the NAND
|
|
|
continuing
// 1 byte command
|
|
|
|
Freescale Semiconductor, Inc.
// no dma transfer
// field not used