• 參數(shù)資料
    型號: LFEC40E-3F900C
    廠商: LATTICE SEMICONDUCTOR CORP
    元件分類: FPGA
    英文描述: LatticeECP/EC Family Data Sheet
    中文描述: FPGA, 5120 CLBS, PBGA900
    封裝: 31 X 31 MM, FPBGA-900
    文件頁數(shù): 25/117頁
    文件大小: 557K
    代理商: LFEC40E-3F900C
    2-22
    Architecture
    Lattice Semiconductor
    LatticeECP/EC Family Data Sheet
    Table 2-12. PIO Signal List
    Figure 2-24. DQS Routing
    PIO
    The PIO contains four blocks: an input register block, output register block, tristate register block and a control logic
    block. These blocks contain registers for both single data rate (SDR) and double data rate (DDR) operation along
    with the necessary clock and selection logic. Programmable delay lines used to shift incoming clock and data sig-
    nals are also included in these blocks.
    Name
    Type
    Description
    CE0, CE1
    CLK0, CLK1
    LSR
    GSRN
    INCK
    DQS
    INDD
    INFF
    IPOS0, IPOS1
    ONEG0
    OPOS0,
    OPOS1 ONEG1
    TD
    DDRCLKPOL
    Control from the core
    Control from the core
    Control from the core
    Control from routing
    Input to the core
    Input to PIO
    Input to the core
    Input to the core
    Input to the core
    Control from the core
    Control from the core
    Tristate control from the core
    Tristate control from the core
    Control from clock polarity bus
    Clock enables for input and output block FFs.
    System clocks for input and output blocks.
    Local Set/Reset.
    Global Set/Reset (active low).
    Input to Primary Clock Network or PLL reference inputs.
    DQS signal from logic (routing) to PIO.
    Unregistered data input to core.
    Registered input on positive edge of the clock (CLK0).
    DDRX registered inputs to the core.
    Output signals from the core for SDR and DDR operation.
    Output signals from the core for DDR operation
    Signals to Tristate Register block for DDR operation.
    Tristate signal from the core used in SDR operation.
    Controls the polarity of the clock (CLK0) that feed the DDR input block.
    PIO A
    PIO B
    PADA "T"
    LVDS Pair
    PADB "C"
    PIO B
    PIO A
    PIO B
    PIO A
    Assigned
    DQS Pin
    PADA "T"
    DQS
    sysIO
    Buffer
    PADB "C"
    LVDS Pair
    PADA "T"
    LVDS Pair
    PADB "C"
    PIO A
    PIO B
    PADA "T"
    LVDS Pair
    PADB "C"
    PIO A
    PIO B
    PADA "T"
    LVDS Pair
    PADB "C"
    PIO A
    PIO B
    PADA "T"
    LVDS Pair
    PADB "C"
    PIO A
    PIO B
    PADA "T"
    LVDS Pair
    PADB "C"
    PIO A
    PIO B
    PADA "T"
    LVDS Pair
    PADB "C"
    Delay
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