MCIMX281AVM4B Freescale Semiconductor, MCIMX281AVM4B Datasheet - Page 1082
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
- Current page: 1082 of 2327
- Download datasheet (17Mb)
EMI Multi-Port Arbiter
14.5.3 Understanding Port Priority
For AXI ports, the priority is associated with a port and each port has separate priority
parameter for reads and writes. These values are stored into the programmable parameters
axiY_r_priority and axiY_w_priority (where Y represents the port number) at controller
initialization.
Internally, the ports are organized into priority groups based on their priority settings. All
ports within a priority group are treated equally for arbitration unless a port has exceeded
its allocated bandwidth. The priority value is also used by the placement logic inside the
core logic when filling the command queue.
A priority value of 0 is highest priority, and a priority value of (decimal) 7 is the lowest
priority. The user may program at priority level 0; however, it is best to reserve this priority
value so that the placement queue can elevate to this level through aging.
1082
0
1
2
3
4
5
6
7
8
9
10
CYCLE
0
0
1
1
2
3
0
0
1
2
3
TION COUNTER
THE ARBITRA-
DRESSED BY
PORT AD-
i.MX28 Applications Processor Reference Manual, Rev. 1, 2010
Y
Y
-
Y
Y
Y
Y
Y
-
-
Y
PORT
Table 14-6. Round-Robin Operation Example
0
PORTS REQUESTING
Y
Y
Y
Y
-
-
-
-
-
-
-
PORT
1
Y
Y
Y
Y
Y
-
Y
Y
Y
Y
-
PORT
2
Y
Y
Y
Y
Y
Y
-
-
-
Y
Y
PORT
3
Yes
No
Yes
No
No
No
Yes
No
No
No
No
QUEUE FULL ?
COMMAND
None
P0
None
P1
P2
P3
None
P0
P2
P2
P3
WINNER OF ARBIT-
RATION
Freescale Semiconductor, Inc.
0
1
1
2
3
0
0
1
2
3
0
COUNTER AT
NEXT CYCLE
VALUE OF
Related parts for MCIMX281AVM4B
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
MCU, MPU & DSP Development Tools MCIMX28LCD
Manufacturer:
Freescale Semiconductor
Datasheet:
Part Number:
Description:
MCIMX-LVDS1
Manufacturer:
Freescale Semiconductor
Datasheet:
Part Number:
Description:
Manufacturer:
Freescale Semiconductor, Inc
Datasheet:
Part Number:
Description:
Manufacturer:
Freescale Semiconductor, Inc
Datasheet:
Part Number:
Description:
Manufacturer:
Freescale Semiconductor, Inc
Datasheet:
Part Number:
Description:
Manufacturer:
Freescale Semiconductor, Inc
Datasheet:
Part Number:
Description:
Manufacturer:
Freescale Semiconductor, Inc
Datasheet:
Part Number:
Description:
Manufacturer:
Freescale Semiconductor, Inc
Datasheet:
Part Number:
Description:
Manufacturer:
Freescale Semiconductor, Inc
Datasheet:
Part Number:
Description:
Manufacturer:
Freescale Semiconductor, Inc
Datasheet:
Part Number:
Description:
Manufacturer:
Freescale Semiconductor, Inc
Datasheet:
Part Number:
Description:
Manufacturer:
Freescale Semiconductor, Inc
Datasheet:
Part Number:
Description:
Manufacturer:
Freescale Semiconductor, Inc
Datasheet:
Part Number:
Description:
Manufacturer:
Freescale Semiconductor, Inc
Datasheet:
Part Number:
Description:
Manufacturer:
Freescale Semiconductor, Inc
Datasheet: