MCIMX286CVM4B Freescale Semiconductor, MCIMX286CVM4B Datasheet - Page 1061

• 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

Chapter 14
External Memory Interface (EMI)
14.1 Overview
The i.MX28 supports off-chip DRAM storage through the EMI controller, which is connected
to the four internal AHB/AXI busses. The EMI supports multiple external memory types,
including the following:
The EMI uses two primary clocks: the AHB bus, HCLK, and the DRAM source clock,
EMI_CLK. The maximum specified frequencies for these two clocks are 200 MHz. The
HCLK and EMI_CLK can be either synchronous or asynchronous, configurable.
The EMI consists of the following 3 major components:
14.1.1 Block Diagram
A high-level block diagram of the EMI is shown in the following figure.
Freescale Semiconductor, Inc.
• 1.8-V mobile DDR1 (LP-DDR1)
• Standard 1.8 V DDR2
• Low-voltage 1.5 V DDR2 (LV-DDR2)
• AXI/AHB bus interface and multi-port arbiter
• DRAM Control Logic
• DRAM PHY
i.MX28 Applications Processor Reference Manual, Rev. 1, 2010
1061