MCIMX281AVM4B Freescale Semiconductor, MCIMX281AVM4B Datasheet - Page 1282
MCIMX281AVM4B
Manufacturer Part Number
MCIMX281AVM4B
Description
IC MPU I.MX28 1.2 289MAPBGA
Manufacturer
Freescale Semiconductor
Series
i.MX28r
Datasheets
1.MCIMX283DVM4B.pdf
(2327 pages)
2.MCIMX283DVM4B.pdf
(20 pages)
3.MCIMX281AVM4B.pdf
(72 pages)
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
- Current page: 1282 of 2327
- Download datasheet (17Mb)
Programming the BCH/GPMI Interfaces
address
read[0].gpmi_compare = NULL;
eccctrl
read[0].gpmi_eccctrl = BV_FLD(GPMI_ECCCTRL, ENABLE_ECC, DISABLE); // disable the ECC block
//----------------------------------------------------------------------------
// Descriptor 2: issue NAND read execute command (CLE)
//----------------------------------------------------------------------------
read[1].dma_nxtcmdar = &read[2];
read[1].dma_cmd = BF_APBH_CHn_CMD_XFER_COUNT
read[1].dma_bar = &nand_cmd_addr_buffer[6];
command
// 1 word sent to the GPMI
read[1].gpmi_ctrl0 = BV_FLD(GPMI_CTRL0, COMMAND_MODE, WRITE)
CS used
//----------------------------------------------------------------------------
// Descriptor 3: wait for ready (DATA)
//----------------------------------------------------------------------------
read[2].dma_nxtcmdar = &read[3];
read[2].dma_cmd = BF_APBH_CHn_CMD_XFER_COUNT
read[2].dma_bar = NULL;
// 1 word sent to the GPMI
read[2].gpmi_ctrl0 = BV_FLD(GPMI_CTRL0, COMMAND_MODE, WAIT_FOR_READY) | // wait for NAND ready
//----------------------------------------------------------------------------
// Descriptor 4: psense compare (time out check)
//----------------------------------------------------------------------------
read[3].dma_nxtcmdar = &read[4];
read[3].dma_cmd = BF_APBH_CHn_CMD_XFER_COUNT
1282
NAND
NAND CS used
BF_APBH_CHn_CMD_WAIT4ENDCMD
BF_APBH_CHn_CMD_WAIT4ENDCMD
BV_FLD(APBH_CHn_CMD, COMMAND, DMA_READ);
BF_APBH_CHn_CMD_CMDWORDS
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
BF_APBH_CHn_CMD_CMDWORDS
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
i.MX28 Applications Processor Reference Manual, Rev. 1, 2010
BV_FLD(GPMI_CTRL0, WORD_LENGTH,
BV_FLD(GPMI_CTRL0, LOCK_CS,
BF_GPMI_CTRL0_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,
BF_GPMI_CTRL0_CS
BV_FLD(GPMI_CTRL0, ADDRESS,
BF_GPMI_CTRL0_ADDRESS_INCREMENT
BF_GPMI_CTRL0_XFER_COUNT
(1)
(1)
(1)
(1)
(0)
(1)
(0)
(1)
(0)
(1)
(0)
(0)
(0)
(1)
(0)
(0)
(0)
(0)
(0)
|
// field not used but necessary to set
8_BIT)
DISABLED) |
(2)
NAND_CLE) |
(0)
(1);
8_BIT)
DISABLED)
(2)
NAND_DATA)
(0)
(0);
|
|
|
|
|
|
|
| // wait for command to finish before
| // no dma transfer
| // send 1 word to GPMI
|
| // wait for nand to be ready
| // relinquish nand lock
|
| // follow chain to next command
// wait for command to finish before
// point to byte 6, read execute
// point to the next descriptor
// 1 byte read command
// send 1 word to GPMI
//
// prevent other DMA channels from
//
// follow chain to next command
// point to the next descriptor
//
|
|
|
|
|
|
// read data from DMA, write to
// point to the next descriptor
| // write to the NAND
|
| // must correspond to NAND
|
// no dma transfer
// field not used
continuing
taking over
// 1 byte command
continuing
// no dma transfer
// no words sent to GPMI
// do not wait to continue
|
|
| // must correspond to
|
|
Freescale Semiconductor, Inc.
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