MCIMX281AVM4B Freescale Semiconductor, MCIMX281AVM4B Datasheet - Page 1033
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
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13.3.8 DCP Key Data (HW_DCP_KEYDATA)
This register provides write access to the key/key subword specified by the Key Index
Register.
Writing this location updates the selected subword for the key located at the index specified
by the Key Index Register. A write also triggers the SUBWORD field of the KEY register
to increment to the next higher word in the key.
EXAMPLE
// write key 0 to 0x00112233_44556677_8899aabb_ccddeeff
HW_DCP_KEY_WR(BF_DCP_KEY_INDEX(0) | BF_DCP_KEY_SUBWORD(0)); // set key index to key 0, subword
HW_DCP_KEYDATA_WR(0xccddeeff);
HW_DCP_KEYDATA_WR(0x8899aabb);
HW_DCP_KEYDATA_WR(0x44556677);
HW_DCP_KEYDATA_WR(0x00112233);
Address:
Re-
Freescale Semiconductor, Inc.
set
Bit
W
0
R
RSVD_INDEX
SUBWORD
SUBWORD
31
0
RSVD_
INDEX
DATA
Field
Field
31 0
7 6
5 4
3 2
1 0
30
0
29
0
HW_DCP_KEYDATA
28
0
Reserved, always set to zero.
Key index pointer. Valid indices are 0-[number_keys].
Reserved, always set to zero.
Key subword pointer. Valid indices are 0-3. After each write to the key data register, this field will increment.
Word 0 data for key. This is the least-significant word.
27
0
26
0
i.MX28 Applications Processor Reference Manual, Rev. 1, 2010
25
0
HW_DCP_KEY field descriptions (continued)
24
0
23
0
HW_DCP_KEYDATA field descriptions
8002_8000h base + 70h offset = 8002_8070h
22
0
21
// write key values (subword 0)
// write key values (subword 1)
// write key values (subword 2)
// write key values (subword 3)
0
20
0
19
0
18
0
17
0
16
DATA
0
15
0
Description
Description
14
0
13
0
12
0
11
0
10
0
Chapter 13 Data Co-Processor (DCP)
0
9
0
8
0
7
0
6
0
5
0
4
3
0
0
2
0
1
1033
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0
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