MCIMX281AVM4B Freescale Semiconductor, MCIMX281AVM4B Datasheet - Page 1809

• Manufacturer Part Number: MCIMX281AVM4B
• Description: IC MPU I.MX28 1.2 289MAPBGA
• Manufacturer: Freescale Semiconductor
• Series: i.MX28r

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

Chapter 29 Programmable 3-Port Ethernet Switch with QOS (SWITCH)
The Switch APB interface and interrupt signals are disabled and should not be used. To
control the Frame transfer from DMA0 and DMA1, the ENET-MAC 0 and the ENET-MAC
1 APB interfaces and interrupt signals should be used.
Ethernet
Ethernet
Port 0
Port 1
ENET-MAC 0
ENET-MAC 1
Switch
'0'
sx_ena
Bypass Port
DMA0
DMA1
Figure 29-3. Passthrough Mode Configuration Overview
29.3.3 Switch Mode
When the Switch is programmed to operate in Switch Mode (sx_ena set to '1'), the Bypass
Mode (Port 1) interface is disabled and should not be used.
Frame transfers to and from the Line are performed on Port 0 only (DMA 0). The Transmit
status signals are generated from the Switch Port 0 Receive Buffer and the DMA control
signals from the Switch Register Space. The ENET-MAC 0 and ENET-MAC 1 Transmit
status and DMA control signals are not used.
The ENET-MAC 0 and ENET-MAC 1 APB interfaces and interrupts are enabled and can
be used to monitor the line activity and gather the line statistic information.
i.MX28 Applications Processor Reference Manual, Rev. 1, 2010
Freescale Semiconductor, Inc.
1809