MCIMX286CVM4B Freescale Semiconductor, MCIMX286CVM4B Datasheet - Page 1104

• 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

DDR PHY
The delay-line is comprised of 137 tiny delay-elements. The delay value of each delay
element is almost the same. And the number of delay elements which is used to form a
delay result is configurable.
There are two modes for the delay-line control :
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• Auto configure mode
This process begins by the “phase-detector”. Once the phase-detector successfully
complete the detection, it will raise the “dll_lock” signal and output “dll_lock_value”
which indicates the delay of cone cycle.
The number of elements that are needed to capture an entire clock cycle is then converted
into an unsigned integer named encoder [7:0]. This integer is used as the dividend for
the read and write delay parameters. The actual delay setting for the delay lines is
programmable
Write delay value
programmable
Read delay value
io_dqs_in
emi_clk
i.MX28 Applications Processor Reference Manual, Rev. 1, 2010
dll phase detector
(select number of delay elements)
(select number of delay elements)
Figure 14-13. Digital DLL
Digital DLL Main Control Logic
delay-line control logic
delay-line control logic
detector control logic
Detector Delay -Line
Write Delay -Line
Read Delay -Line
dll_lock_value
delayed_dqs
Freescale Semiconductor, Inc.
dll_lock
clk_wr