MCIMX281AVM4B Freescale Semiconductor, MCIMX281AVM4B Datasheet - Page 499

• 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

7.2 APBX DMA
The DMA supports sixteen channels of DMA services, as shown in the following table.
The shared DMA resource allows each independent channel to follow a simple chained
command list. Command chains are built up using the DMA command structure, as shown
in
A single command structure or channel command word specifies a number of operations
to be performed by the DMA in support of a given device. Thus, the CPU can set up large
units of work, chaining together many DMA channel command words, pass them off to the
DMA and have no further concern for the device until the DMA completion interrupt occurs.
The i.MX28 is designed to have enough intelligence in the DMA and the devices to keep
the interrupt frequency from any device below 1 KHz (arrival intervals longer than 1 ms).
Freescale Semiconductor, Inc.
Figure
APBX DMA Channel #
7-2.
10
11
12
13
14
15
0
1
2
3
4
5
6
7
8
9
i.MX28 Applications Processor Reference Manual, Rev. 1, 2010
Table 7-1. APBX DMA Channel Assignments
Chapter 7 AHB-to-APBX Bridge with DMA (APBX-Bridge-DMA)
AUART4 RX
AUART0 RX
AUART1 RX
AUART2 RX
AUART3 RX
AUART4 TX
AUART0 TX
AUART1 TX
AUART2 TX
AUART3 TX
SPDIF TX
EMPTY
USAGE
SAIF0
SAIF1
I2C0
I2C1
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