MCIMX286CVM4B Freescale Semiconductor, MCIMX286CVM4B Datasheet - Page 1568

• Manufacturer Part Number: MCIMX286CVM4B
• Description: IC MPU I.MX286 289MAPBGA
• Manufacturer: Freescale Semiconductor
• Series: i.MX28r

Specifications of MCIMX286CVM4B

• 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: Compliant

Functional Description
The eight elements of the filter table are individually affected by the first eight Individual
Mask Registers (RXIMR0 - RXIMR7), allowing very powerful filtering criteria to be
defined. The rest of the RXIMR, starting from RXIM8, continue to affect the regular MBs,
starting from MB8. If the BCC bit is negated (or if the RXIMR are not available for the
particular MCU), then the FIFO filter table is affected by the legacy mask registers as
follows: element 6 is affected by RX14MASK, element 7 is affected by RX15MASK and
the other elements (0 to 5) are affected by RXGMASK.
25.4.10.1 Remote Frames
Remote frame is a special kind of frame. The user can program a MB to be a Request Remote
Frame by writing the MB as Transmit with the RTR bit set to '1'. After the Remote Request
frame is transmitted successfully, the MB becomes a Receive Message Buffer, with the
same ID as before.
When a Remote Request frame is received by FlexCAN, its ID is compared to the IDs of
the transmit message buffers with the Code field '1010'. If there is a matching ID, then this
MB frame will be transmitted. Note that if the matching MB has the RTR bit set, then
FlexCAN will transmit a Remote Frame as a response.
A received Remote Request Frame is not stored in a receive buffer. It is only used to trigger
a transmission of a frame in response. The mask registers are not used in remote frame
matching, and all ID bits (except RTR) of the incoming received frame should match.
In the case that a Remote Request Frame was received and matched an MB, this message
buffer immediately enters the internal arbitration process, but is considered as normal Tx
MB, with no higher priority. The data length of this frame is independent of the DLC field
in the remote frame that initiated its transmission.
If the Rx FIFO is enabled (bit FEN set in MCR), FlexCAN will not generate an automatic
response for Remote Request Frames that match the FIFO filtering criteria. If the remote
frame matches one of the target IDs, it will be stored in the FIFO and presented to the ARM.
Note that for filtering formats A and B, it is possible to select whether remote frames are
accepted or not. For format C, remote frames are always accepted (if they match the ID).
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• Format B: 16 standard IDs or 16 extended 14-bit ID slices (including IDE and RTR)
• Format C: 32 standard or extended 8-bit ID slices
A chosen format is applied to all 8 registers of the lter table. It
is not possible to mix formats within the table.
i.MX28 Applications Processor Reference Manual, Rev. 1, 2010
Note
Freescale Semiconductor, Inc.