MCIMX281AVM4B Freescale Semiconductor, MCIMX281AVM4B Datasheet - Page 120

• 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
3.2.1 Top-Level Symbol and Functional Overview
The DFLPT connects to the AHB as shown in
pipelining (single wait-state), the bus interfaces have little or no combinatorial logic. The
read and address paths connect directly to the registers. The write-path connects to the
register bank through one level 1-hot muxing. All address and locator decodes are also
performed using 1-hot logic. Offset address generated from the AHB address (for purposes
of generating spanned base addresses) use a registered version of the AHB address.
3.2.2 Memory Map
The virtual memory view of the DFLPT can be seen in the figure below. This example
shows how a MPTE can be spanned and how it will appear to the ARM MMU. In this
example, MPTE0 is set as follows:
120
• HW_DIGCTL_MPTE0_DIS = 0x0
• HW_DIGCTL_MPTE0_SPAN = 0x2
i.MX28 Applications Processor Reference Manual, Rev. 1, 2010
ahb_wdata
ahb_ready_out
ahb_ready_in
ahb_rdata
ahb_trans,
ahb_write,
ahb_addr,
ahb_resp,
Figure 3-2. DFLPT System Level Block Diagram
APBH Bridge
MPTEn_LOC / SPAN
State Logic
Locate/Span
17:1 Read data
Logic
APBH
mux
Figure
DIGCTL
3-2. Note that due to the internal
Reg Select
Span base-addr Gen
MPTEn_DIS
Movable PTE regs
Entry 2048 (PIO)
(MPTE0-15)
+
DFLPT
Freescale Semiconductor, Inc.