MCIMX286CVM4B Freescale Semiconductor, MCIMX286CVM4B Datasheet - Page 1283
MCIMX286CVM4B
Manufacturer Part Number
MCIMX286CVM4B
Description
IC MPU I.MX286 289MAPBGA
Manufacturer
Freescale Semiconductor
Series
i.MX28r
Datasheets
1.MCIMX283DVM4B.pdf
(70 pages)
2.MCIMX283DVM4B.pdf
(2 pages)
3.MCIMX283DVM4B.pdf
(2327 pages)
4.MCIMX283DVM4B.pdf
(20 pages)
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
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command
read[3].dma_bar = dma_error_handler;
error handler
//----------------------------------------------------------------------------
// Descriptor 5: read 4K page plus 65 byte meta-data Nand data
//
//----------------------------------------------------------------------------
read[4].dma_nxtcmdar = &read[5];
read[4].dma_cmd = BF_APBH_CHn_CMD_XFER_COUNT
taking over
read[4].dma_bar = NULL;
// 6 words sent to the GPMI
read[4].gpmi_ctrl0 = BV_FLD(GPMI_CTRL0, COMMAND_MODE, READ)
blocks
read[4].gpmi_compare = NULL;
eccctrl
// GPMI ECCCTRL PIO This launches the 4K byte transfer through BCH's
// bus master. Setting the ECC_ENABLE bit redirects the data flow
// within the GPMI so that read data flows to the BCH engine instead
// of flowing to the GPMI's DMA channel.
read[4].gpmi_eccctrl = BV_FLD(GPMI_ECCCTRL, ECC_CMD,
mode
read[4].gpmi_ecccount = BF_GPMI_ECCCOUNT_COUNT(4096+218);
read[4].gpmi_data_ptr = &read_payload_buffer;
read[4].gpmi_aux_ptr = &read_aux_buffer;
aux area +
//----------------------------------------------------------------------------
// Descriptor 6: disable ECC block
//----------------------------------------------------------------------------
read[5].dma_nxtcmdar = &read[6];
read[5].dma_cmd = BF_APBH_CHn_CMD_XFER_COUNT
Freescale Semiconductor, Inc.
CS used
1 aux block
for both
and send it to ECC block (DATA)
BF_APBH_CHn_CMD_WAIT4ENDCMD
BF_APBH_CHn_CMD_IRQONCMPLT
BF_APBH_CHn_CMD_CHAIN
BV_FLD(APBH_CHn_CMD, COMMAND, DMA_SENSE);
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, NO_DMA_XFER);
BF_APBH_CHn_CMD_CMDWORDS
BF_APBH_CHn_CMD_SEMAPHORE
i.MX28 Applications Processor Reference Manual, Rev. 1, 2010
BF_GPMI_CTRL0_CS
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_ECCCTRL, ENABLE_ECC, ENABLE)
BF_GPMI_ECCCTRL_BUFFER_MASK
(1)
(0)
(1)
(0)
(6)
(1)
(0)
(1)
(0)
(1)
(0)
(3)
(0)
Chapter 16 20-BIT Correcting ECC Accelerator (BCH)
(2)
| // no dma transfer
| // send 6 words to GPMI
| // wait for command to finish before
|
|
| // prevent other DMA channels from
| // ECC block generates BCH interrupt
| // follow chain to next command
8_BIT)
DISABLED)
NAND_DATA)
(0)
(4096+218);
// field not used but necessary to set
(0X1FF);
| // wait for command to finish before
// point to the next descriptor
//
//
DECODE_8_BIT) |
| // no dma transfer
| // send 3 words to GPMI
|
// if sense check fails, branch to
|
|
// point to the next descriptor
//
on completion
// data and aux blocks.
// ECC block handles transfer
// read all 8 data blocks and
|
continuing
// specify number of bytes
//
// pointer for the 4K byte
//
// pointer for the 65 byte
// parity and syndrome bytes
// follow chain to next
// perform a sense check
// no DMA transfer,
// field not used
|
|
|
|
|
continuing
// must correspond to NAND
|
// read from the NAND
// eight 512 byte data
// metadata, and parity
data area
// enable ECC module
// specify t = 8
read from NAND
1283
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