MCIMX281AVM4B Freescale Semiconductor, MCIMX281AVM4B Datasheet - Page 1780

• 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

Operation
28.2.3 Multi-Chip Attachment Mode
The multi-chip attachment mode (MATT) allows a 24 MHz or 32 KHz crystal clock that
is an input to the i.MX28 to be routed to the PWM output pins. In this case, the normal
PWM programming parameters (for example, PERIOD, ACTIVE, and so on) are ignored.
This mode allows for supplying and controlling the crystal clock for external application
interfaces, as shown in
1780
i.MX28 Applications Processor Reference Manual, Rev. 1, 2010
PWM INACTIVE_STATE [BIT 1]
PWM INACTIVE_STATE [BIT 0]
PWM ACTIVE_STATE [BIT 1]
PWM ACTIVE_STATE [BIT 0]
Sensor control signals
Figure
Clock Block
Figure 28-4. PWM HSADC Usecase
Figure 28-5. PWM Output Driver
PWM ENABLE BIT
28-5.
PWM
CLOCK GATE
32MHz
24 MHz or 32 KHz Crystal Clock
Trigger signal
AHB clock
200MHz
Linear image sensor
Clock for ADC divider
Divide by 1
1
0
1
0
HSADC
Sampling clock32MHz
1
0
Sample data
Ctrl signals
Analog pixel data
288MHz
PWM OUTPUT
ADC
Freescale Semiconductor, Inc.