MCIMX281AVM4B Freescale Semiconductor, MCIMX281AVM4B Datasheet - Page 1227
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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14.8.168 DRAM Control Register 179 (HW_DRAM_CTL179)
This is a DRAM configuration register.
Address:
Freescale Semiconductor, Inc.
Reset
Reset
CURRENT_BDW
AXI5_BDW
AXI4_BDW
Bit
Bit
W
W
TCKESR
R
R
RSVD4
RSVD3
RSVD2
RSVD1
30 24
22 16
AXI4_
Field
14 8
7 5
4 0
RSVD2
31
23
15
15
31
0
0
HW_DRAM_CTL179
14
30
0
0
Always write zeroes to this field.
Maximum bandwidth percentage for port 5.
Always write zeroes to this field.
Current bandwidth usage percentage for port 4. READ-ONLY.
Always write zeroes to this field.
Maximum bandwidth percentage for port 4.
Always write zeroes to this field.
Minimum CKE low pulse width during a self-refresh.
Defines the minimum number of cycles that CKE must be held low during self-refresh. pulse width, in cycles.
If the memory specification does not define a tckesr, then the tckesr parameter should be programmed with
the tcke value.
13
29
0
0
i.MX28 Applications Processor Reference Manual, Rev. 1, 2010
12
28
0
0
RSVD3
AXI4_BDW
HW_DRAM_CTL178 field descriptions
800E_0000h base + 2CCh offset = 800E_02CCh
11
27
0
0
10
26
0
0
25
0
0
9
24
0
0
8
Description
23
0
0
7
RSVD2
RSVD1
22
0
0
6
Chapter 14 External Memory Interface (EMI)
21
5
0
0
TDFI_PHYUPD_TYPE1[21:16]
20
4
0
0
19
0
0
3
TCKESR
18
0
0
2
17
0
0
1
1227
16
0
0
0
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