MCIMX281AVM4B Freescale Semiconductor, MCIMX281AVM4B Datasheet - Page 1817
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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29.4.6.3 Ipv4 and Ipv6 Priority Look Up
29.4.6.3.1 Overview
The switch can classify both Ipv4 and Ipv6 frames: A 64-Entry Table is implemented per
port to classify the IPv4 Frames and a 256-Entry Table is implemented per port to classify
IPv6 Frames (The IP COS Tables) (see registers IP_PRIORITY).
On the IPv4 COS table entry, the Frame's 6-Bit DiffServ field is provided and the Table
returns the 3-bit priority information.
On the Ipv6 COS table entry, the 8-Bit Class of Service field is provided and the Table
returns the 3-bit priority information.
29.4.6.3.2 Classification Table Programming Model
To program the mapping tables a indirect addressing scheme is implemented using a single
register
Freescale Semiconductor, Inc.
IP_PRIORITY
i.MX28 Applications Processor Reference Manual, Rev. 1, 2010
within the register interface.
Figure 29-6. IP COS Tables Overview
Figure 29-5. VLAN Table Overview
8
Chapter 29 Programmable 3-Port Ethernet Switch with QOS (SWITCH)
2
Programming Interface
Programming Interface
Ipv6 COS Table
Ipv4 COS Table
256 Entries
IP COS Table
VLAN Table
VLAN Table
8 Entries
64 Entries
3
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