MCIMX281AVM4B Freescale Semiconductor, MCIMX281AVM4B Datasheet - Page 1512

• 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

Programmable Registers
1512
OVERSAMPLE
POLARITY_B
POLARITY_A
SELECT_B
SELECT_A
RELATIVE
RSRVD3
15 13
11 10
Field
7 4
3 0
12
9
8
Always write zeroes to this bit field.
Set this bit to one to cause the rotary decoders updown counter to be reset to zero whenever it is read.
This bit field determines the oversample rate to use in debouncing Rotary A and B inputs.
0x0
0x1
0x2
0x3
Set this bit to one to invert the input to the edge detector.
Set this bit to one to invert the input to the edge detector.
Selects the source for the timer tick that increments the free-running counter that measures the A2B and
B2A overlap counts.
0x0
0x1
0x2
0x3
0x4
0x5
0x6
0x7
0x8
0x9
0xA
Selects the source for the timer tick that increments the free-running counter that measures the A2B and
B2A overlap counts.
0x0
0x1
0x2
0x3
0x4
0x5
0x6
0x7
0x8
0x9
0xA
HW_TIMROT_ROTCTRL field descriptions (continued)
8X — 8x Oversample: 8 successive ones or zeroes to transition.
4X — 4x Oversample: 4 successive ones or zeroes to transition.
2X — 2x Oversample: 2 successive ones or zeroes to transition.
1X — 1x Oversample: Transition on each first input change.
NEVER_TICK — SelectB: Never tick.
PWM0 — SelectB: Input from PWM0.
PWM1 — SelectB: Input from PWM1.
PWM2 — SelectB: Input from PWM2.
PWM3 — SelectB: Input from PWM3.
PWM4 — SelectB: Input from PWM4.
PWM5 — SelectB: Input from PWM5.
PWM6 — SelectB: Input from PWM6.
PWM7 — SelectB: Input from PWM7.
ROTARYA — SelectB: Input from Rotary A.
ROTARYB — SelectB: Input from Rotary B.
NEVER_TICK — SelectA: Never tick.
PWM0 — SelectA: Input from PWM0.
PWM1 — SelectA: Input from PWM1.
PWM2 — SelectA: Input from PWM2.
PWM3 — SelectA: Input from PWM3.
PWM4 — SelectA: Input from PWM4.
PWM5 — SelectB: Input from PWM5.
PWM6 — SelectB: Input from PWM6.
PWM7 — SelectB: Input from PWM7.
ROTARYA — SelectB: Input from Rotary A.
ROTARYB — SelectB: Input from Rotary B.
i.MX28 Applications Processor Reference Manual, Rev. 1, 2010
Description
Freescale Semiconductor, Inc.