MCIMX281AVM4B Freescale Semiconductor, MCIMX281AVM4B Datasheet - Page 1270

• 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
1270
6. Issue NAND status command byte (under CLE).
7. Read the status and compare against expected.
8. If status is incorrect or incomplete, branch to error handling descriptor chain.
9. Otherwise, write is complete and emit GPMI interrupt.
HW_GPMI_COMPARE
HW_GPMI_ECCCTRL
HW_GPMI_CTRL0
CMD
i.MX28 Applications Processor Reference Manual, Rev. 1, 2010
<=
<=
<=
<=
command_mode
xfer_count
Figure 16-7. BCH DMA Descriptor Legend
Start GPMI DMA chain for next write or read transfer.
Return and wait for DMA channel 4 (or 5 or 6 or 7)
Point the GPMI DMA channel 4 (or 5 or 6 or 7) at
HW_APBH_CTRL1_CH0_CMDCMPLT_IRQ = 0
Figure 16-6. BCH Encode Flowchart
Run the prescribe initialization sequence.
the prescribed static DMA sequence.
word_length
cmdwords
ecc_cmd
command complete interrupt.
APBH DMA CH4 Command
mask
BCH ENCODE &
Start the DMA.
WRITE NAND
Complete ISR
wait4endcmd
lock_cs
STOP
STOP
HW_GPMI_ECCCOUNT
HW_GPMI_AUXILIARY
HW_GPMI_PAYLOAD
NEXT CMD ADDR
Descriptor Legend
BUFFER ADDR
semaphore
CS
nandwait4ready
address
enable_ecc
Must use SCT clear
address_increment
nandlock
reference
irqoncmplt chain command
Freescale Semiconductor, Inc.
xfer_count
buffer_mask