MCIMX286CVM4B Freescale Semiconductor, MCIMX286CVM4B Datasheet - Page 978

• 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

SD/MMC Boot Mode
12.11.2 Master Boot Record (MBR) Media Format
If the eFuse media format mode is MBR_MEDIA_FORMAT, then ROM expects a valid
master boot record (MBR) to be present on the first block of media. The MBR is identified
by its signature located at offset 0x1FE of the first sector. The partition table is stored at
address 0x1BE. The Freescale firmware partition is identified by MBR_SIGMATEL_ID
at an offset 0x04 from partition table. The firmware partition’s start block address is located
at offset 0x08 of firmware partition entry of partition table.
The first block of firmware partition contains BCB, allowing multiple copies of firmware
to reside inside firmware partition and to support redundant boot feature of ROM. Refer to
Boot Control Block (BCB) Data Structure
use. All firmware copies specified in BCB should be located inside the firmware partition.
12.11.3 eMMC Fast Boot Media Format
This section describes the behavior of ROM when the eFuse state of SD_MMC_MODE is
0x10 (eMMC_FASTBOOT_MEDIA_FORMAT). The eMMC4.3 and eMMC4.4 fast boot
modes are supported. By default, primary fast boot mode, pull down CMD line after eMMC
card power up, is enabled. The ALT_FAST_BOOT OTP bit enables the alternative fast
boot mode, which sends CMD0 with an argument 0xFFFF_FFFA after power up.
The boot image for eMMC fast boot does not contain a MBR block or a configuration block.
It is the user’s responsibility to program the EXT_CSD register when loading the boot image
into an eMMC card.
The bytes in EXT_CSD register have to be read or programmed to include the following:
The ALT_FAST_BOOT, FAST_BOOT_ACK, EMMC_USE_DDR and SD_BUS_WIDTH
OTP bits must be consistent with the setting in EXT_CSD register.
978
• [228] BOOT_INFO
• [226] BOOT_SIZE_MULT
• [179] BOOT_CONFIG(eMMC4.3) PARTITION_CONFIG(eMMC4.4)
• [177] BOOT_BUS_WIDTH
MBR_SIGMATEL_ID
i.MX28 Applications Processor Reference Manual, Rev. 1, 2010
MBR Signature
Field
for a detailed view of BCB data structure and its
0x55AA
Value
Freescale Semiconductor, Inc.
'S'