MCIMX286CVM4B Freescale Semiconductor, MCIMX286CVM4B Datasheet - Page 1299

• 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

Address:
Re-
16.6.11 Hardware BCH ECC Flash 1 Layout 1 Register
The flash format register contains a description of the logical layout of data on the flash
device. This register is used in conjuction with the FLASH1LAYOUT0 register to control
the format for the device selecting layout 1 in the LAYOUTSELECT register.
EXAMPLE
HW_BCH_FLASH1LAYOUT0_WR(0x020C8000);
Freescale Semiconductor, Inc.
set
Bit
W
R
DATA0_SIZE
META_SIZE
NBLOCKS
31
0
31 24
23 16
15 12
ECC0
Field
11 0
30
0
29
0
NBLOCKS
HW_BCH_FLASH1LAYOUT0
(HW_BCH_FLASH1LAYOUT1)
28
0
Number of subsequent blocks on the flash page (excluding the data0 block). A value of 0 indicates that only
the DATA0 block is present and a value of 8 indicates that 8 subsequent blocks are present for a total of 9
blocks on the flash (including the DATA0 block). Any values from 0 to 255 are supported by the hardware.
Indicates the size of the metadata (in bytes) to be stored on a flash page. The BCH design support from 0
to 255 bytes for metadata -- if set to zero, no metadata will be stored. Metadata is stored before the associated
data in block 0. If the DATA0_SIZE field is programmed to a zero, then metadata effectively be stored with
its own parity. When both the metadata and data0 fields are programmed with non-zero values, the first
block will contain both portions of data and will be covered by a single parity block.
Indicates the ECC level for the first block on the flash page. The first block covers metadata plus the
associated data from the DATA0_SIZE field.
0x0
0x1
0x2
0x3
0x4
0x5
0x6
0x7
0x8
0x9
0xA
Indicates the size of the data 0 block (in bytes) to be stored on the flash page. The data size MUST be a
multiple of four bytes. If set to zero, the first block will only contain metadata.
27
0
26
1
NONE — No ECC to be performed
ECC2 — ECC 2 to be performed
ECC4 — ECC 4 to be performed
ECC6 — ECC 6 to be performed
ECC8 — ECC 8 to be performed
ECC10 — ECC 10 to be performed
ECC12 — ECC 12 to be performed
ECC14 — ECC 14 to be performed
ECC16 — ECC 16 to be performed
ECC18 — ECC 18 to be performed
ECC20 — ECC 20 to be performed
i.MX28 Applications Processor Reference Manual, Rev. 1, 2010
25
1
HW_BCH_FLASH1LAYOUT0 field descriptions
24
1
23
0
22
0
21
0
META_SIZE
20
8000_A000h base + A0h offset = 8000_A0A0h
0
19
1
18
0
17
1
16
0
15
1
Description
Chapter 16 20-BIT Correcting ECC Accelerator (BCH)
ECC0
14
0
13
0
12
0
11
0
10
0
1
9
0
8
DATA0_SIZE
0
7
0
6
0
5
0
4
3
0
0
2
0
1
1299
0
0