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Which 2GByte DDR2 RAM POP can be interfaced to OMAP4460? Please provide Part number.

Rushi Gajjar
Intellectual 765 points

Which 2GByte DDR2 RAM POP  can be interfaced to OMAP4460?
I want to design a application board based on OMAP processor, I want to know the product ID and vendor details for that RAM, so that I can go for the design. Requirement is 2GByte (NOT2G'bit') POP for OMAP4460.

  • 0
    TI__Mastermind 29520 points

    Hello Rushi,

     Have you considered the following recommendations, described in OMAP4460 TRM:

     - the maximum size for each DDR supported is 1 GB. 2-GB SDRAM address ranges over two chip-selects (CSs) (1GB per CS) (configurable with the dynamic memory manager (DMM) module;

      The two EMIF modules have features:
    • Two independent CSs with their corresponding register sets and independent page tracking
    • JEDEC standard-compliant LPDDR2-SDRAM (S2 and S4) devices
    • Memory density up to 8 Gbits supported per CS. Total address space is limited to 2GB = 16 Gbits

    You can interface following DDR2 devices:

    MT42L256M32D2LK-18 WT - 1GB

    EDB8164B3PF-8D-F - 1GB - This device is supported in the TI's software releases. There are several device (Pandaboard, Blaze) in combination with OMAP4.

    K3PE0E000M-XG(2) - 2GB - 2CH x32/ch; 216-FBGA, 12x12 PoP, QDP, 128Mx32*4

    However, I cannot provide more information about this DDR device because Samsung does not provide datasheet in their site.

    I suggest you to contact Samsung to provide you more information about this product.

    Best regards,

    Yanko

  • 0 in reply to Yanko Todorov-XID
    Intellectual 765 points

    Hello Yonko, 

    Thanks for the reply, I am looking for the 16GBit/2GByte only.

    Q1) How about this? http://goo.gl/hK4twR

    Q2) What can be the power considerations for using this memory with OMAP4460?

  • 0 in reply to Rushi Gajjar
    TI__Mastermind 29520 points

    Hello Rushi,

    #Q1: How about this? http://goo.gl/hK4twR

    - Yes, this IC LPDDR2 SDRAM 16GBIT VFBGA (PoP) can be interfaced with OMAP4460.

    You must observe this:

    Package: 216-ball FBGA
    — Package size: 12.0mm × 12.0mm

    — Ball pitch: 0.4mm

    However, you must contact with Micron, because this device is not available on market:

    #Q2: What can be the power considerations for using this memory with OMAP4460?

    For detail information about interfacing between LPDDR2 with OMAP4460 you can see in OMAP4460 data manual - http://www.ti.com/pdfs/wtbu/OMAP4460_ES1.x_DM_Public_Book_V_A.pdf

    See the absolute maximum rating for LPDDR2:

    vddq_lpddr2 - Supply voltage for LPDDR2 IOs: - 0,4 to 1.5V

    vddq_vref_lpddr2  - Supply voltage for LPDDR2 DQ VREF:     - 0,4 to 1.5V
                                         Channel 1 on ball G15
                                         Channel 2 on ball T8

    vddca_lpddr2        - Supply voltage for LPDDR2 CA, clock, clock enable, and chip select IOs: - 0,4 to 1.5V

    vddca_vref_lpddr2 - Supply voltage for LPDDR2 CA VREF: Channel 1 on ball Y14: - 0,4 to 1.5V
                                                                                                                Channel 2 on ball R27

    vdda_dll0_lpddr21              Maximum current rating for LPDDR21 DLL providing clocks to bytes 0 and 2   5 mA
    vdda_dll1_lpddr21              Maximum current rating for LPDDR21 DLL providing clocks to bytes 1 and 3   5 mA
    vdda_dll0_lpddr22              Maximum current rating for LPDDR22 DLL providing clocks to bytes 0 and 2   5 mA
    vdda_dll1_lpddr22              Maximum current rating for LPDDR22 DLL providing clocks to bytes 1 and 3   5 mA

    vddq_lpddr2  Maximum current rating for LPDDR2 IOs  275mA
    vddq_vref_lpddr2   Maximum current rating for LPDDR2 DQ VREF: 1mA
                       Channel 1 on ball G15.
                       Channel 2 on ball T8
    vddca_lpddr2       Maximum current rating for LPDDR2 CA, clock, clock enable and chip select IOs 25 mA
    vddca_vref_lpddr2  Maximum current rating for LPDDR2 CA VREF: 1 mA
                       Channel 1 on ball Y14
                       Channel 2 on ball R27

    See the reference design as OMAP4460 PandaBoard - http://pandaboard.org/sites/default/files/board_reference/pandaboard-es-b/panda-es-b-schematic.pdf

    Best regards,

    Yanko

  • 0 in reply to Yanko Todorov-XID
    Intellectual 765 points

    Dear Yanko,

    Thanks for the perfect answer. Yeah, I am following Pandaboard Design.

    Is there any same part which can be in stock, can you suggest? from any supplier?

    Thanks

  • 0 in reply to Rushi Gajjar
    TI__Mastermind 29520 points

    Hello Rushi,

    Other similar LPDDR2 device is K3PE0E000M-XG, which I already pointed. It is needed to contact Samsung, to get information for buying and official distributors.

    For MT42L256M64D4LM-18 WT device, you must contact Micron or some of the distributors, to get information about availability of this device.

    Best regards,

    Yanko

  • 0 in reply to Yanko Todorov-XID
    Intellectual 765 points

    Hi Yanko, 

    I need one clarification regarding the RAM Clock frequency. 

    The RAM from the Samsung (Part Number and Product Selection Guide linked Below)

    is 1066MHz.

    K3PE0E000M-XG(2) or K3PE0E000C-XG(2)

    http://www.samsung.com/us/business/oem-solutions/pdfs/PSG_2H_2012.pdf

    You would be knowing that, EDB8164B3PF-8D-F is the RAM which is used to interface with OMAP4460 on Pandaboard, Elpida RAM Datasheet

    Q] Is it suitable to use 1066MHz LPDDR2 memory to interface with OMAP4460? Can you provide Maximum Data and Clock rates supported with OMAP4460, too?

    PS:

    I have referred to OMAP Data Manual and TRM, but I haven't found any specific mention about the maximum frequency supported.

    TRM Says : "JEDEC standard-compliant LPDDR2-SDRAM (S2 and S4) devices" on page 3338.

    Keywords in TRM I find relevant is: PHY_ROOT_CLK, lpddr2_clk, EMIFi_FCLK is equal to DDR_PHY_CLK divided by 2.

    MY GUESS: EMIFi_FCLK = DDR_PHY_CLK/4 therefore, If I provide 266MHz to EMIFi_FCLK by setting the registers, then I would be able to drive 1066MHz.

    Please suggest.

    Your help will be a great support. Thanks in Advance.

  • 0 in reply to Rushi Gajjar
    TI__Mastermind 29520 points

    Hello Rushi,

    About your question:

    #Q: Is it suitable to use 1066MHz LPDDR2 memory to interface with OMAP4460? Can you provide Maximum Data and Clock rates supported with OMAP4460, too?

    - Yes, EMIF module in OMAP4460 is compatible with LPDDR2 memory. I would like to notice you that in Elpida RAM datasheet and Jedec standard 1066 does not correspond to 1066MHz. This is the maximal data rate.

    Frequency values are for reference only. Clock cycle time (tCK) shall be used to determine device capabilities.

    For Elpida EDB8164B3PF => Clock frequency is 533MHz and Data Rate is 1066Mbps.

    About Maximum clock rates, I suggest you to refer to chapter 4 Clock Specifications in OMAP4460 Data manual.

    A good approach for clock configurations is by using OMAP4460 CTT - OMAP4460 Clock Tree Tool (v1.8.0.4)

    See table Table 15-95. Clocks and Resets in OMAP4460 TRM, where are listed all clock signal to EMIF module from PRCM.

    Best regards,

    Yanko

  • 0 in reply to Yanko Todorov-XID
    Intellectual 765 points

    Thanks for the quick reply Yanko,

    All you said is very correct, but I could not be able to take any inference from it.

    As I mentioned in the previous reply that, 

    "The RAM from the Samsung (Part Number and Product Selection Guide linked Below)

    is 1066MHz. K3PE0E000M-XG(2) or K3PE0E000C-XG(2). " Which you can see on this link.

    In short, Whether the EMIF will be able to provide clock to this specific memory?

    I will surely consider the CTT as you said, thanks for the suggest.

  • 0 in reply to Rushi Gajjar
    TI__Mastermind 29520 points

    Hi Rushi,

    I checked in OMAP4460 Operating Condition Addendum and EMIF module does not support 1066MHz.

    Maximal possible frequency is 800MHz.                                                                         OPP100   OPP50

    Based on the information in Samsung selection guide, I cannot find information about 1066MHz for this memories. There is a note for data rate, which is  1066Mbps.

    I suggest you to see in detail memory data sheet and check the clock frequency for this devices.

    Best regards,

    Yanko

  • 0 in reply to Yanko Todorov-XID
    Intellectual 765 points

    Hi Yanko,

    Thanks for the detail. This will really help. I got to know the limitation of EMIF.

    Can you provide me the link of  "Operating Condition Addendum" Document?

    Regarding the Samsung RAM, The attached link in the previous post had the memory details. Please see the image attached below from the same document. 1066 is mentioned as MHz for LPDDR2. 

    Am I reading correct? Here is the link of the document.

    http://www.samsung.com/us/business/oem-solutions/pdfs/PSG_2H_2012.pdf

    Thanks.

  • 0 in reply to Rushi Gajjar
    TI__Mastermind 29520 points

    Hello Rushi,

    Can you provide me the link of  "Operating Condition Addendum" Document? - Please contact your TI sales representative. This document for OMAP4460 is under NDA agreement. You can see in OMAP4470 OPC addendum http://www.ti.com/lit/ug/swpu325/swpu325.pdf 

    EMIF modules are the same.

    You read correctly correctly. However, I suggest you to check in K3PE7E700M-XG datasheet for supported clock frequency.

    Best regards,

    Yanko

  • 0 in reply to Yanko Todorov-XID
    Intellectual 765 points

    Okay,

    I will look over these document and Datasheet of Samsung Memories. Although, I have contacted Samsung to provide me datasheets of this particular memory.

    Thanks for everything, Yanko.