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    參數(shù)資料
    型號: CY37128VP400-154YXC
    廠商: Cypress Semiconductor Corp.
    英文描述: 5V, 3.3V, ISRTM High-Performance CPLDs
    中文描述: 為5V,3.3V,ISRTM高性能的CPLD
    文件頁數(shù): 3/64頁
    文件大?。?/td> 1792K
    代理商: CY37128VP400-154YXC
    Ultra37000 CPLD Family
    Document #: 38-03007 Rev. *D
    Page 3 of 64
    Speed Bins
    Architecture Overview of Ultra37000 Family
    Programmable Interconnect Matrix
    The PIM consists of a completely global routing matrix for
    signals from I/O pins and feedbacks from the logic blocks. The
    PIM provides extremely robust interconnection to avoid fitting
    and density limitations.
    The inputs to the PIM consist of all I/O and dedicated input pins
    and all macrocell feedbacks from within the logic blocks. The
    number of PIM inputs increases with pin count and the number
    of logic blocks. The outputs from the PIM are signals routed to
    the appropriate logic blocks. Each logic block receives 36
    inputs from the PIM and their complements, allowing for 32-bit
    operations to be implemented in a single pass through the
    device. The wide number of inputs to the logic block also
    improves the routing capacity of the Ultra37000 family.
    An important feature of the PIM is its simple timing. The propa-
    gation delay through the PIM is accounted for in the timing
    specifications for each device. There is no additional delay for
    traveling through the PIM. In fact, all inputs travel through the
    PIM. As a result, there are no route-dependent timing param-
    eters on the Ultra37000 devices. The worst-case PIM delays
    are incorporated in all appropriate Ultra37000 specifications.
    Routing signals through the PIM is completely invisible to the
    user. All routing is accomplished by software—no hand routing
    is necessary.
    Warp
    and third-party development packages
    automatically route designs for the Ultra37000 family in a
    matter of minutes. Finally, the rich routing resources of the
    Ultra37000 family accommodate last minute logic changes
    while maintaining fixed pin assignments.
    Logic Block
    The logic block is the basic building block of the Ultra37000
    architecture. It consists of a product term array, an intelligent
    product-term allocator, 16 macrocells, and a number of I/O
    cells. The number of I/O cells varies depending on the device
    used. Refer to
    Figure 1
    for the block diagram.
    Product Term Array
    Each logic block features a 72 x 87 programmable product
    term array. This array accepts 36 inputs from the PIM, which
    originate from macrocell feedbacks and device pins. Active
    LOW and active HIGH versions of each of these inputs are
    generated to create the full 72-input field. The 87 product
    terms in the array can be created from any of the 72 inputs.
    Of the 87 product terms, 80 are for general-purpose use for
    the 16 macrocells in the logic block. Four of the remaining
    seven product terms in the logic block are output enable (OE)
    product terms. Each of the OE product terms controls up to
    eight of the 16 macrocells and is selectable on an individual
    macrocell basis. In other words, each I/O cell can select
    between one of two OE product terms to control the output
    buffer. The first two of these four OE product terms are
    available to the upper half of the I/O macrocells in a logic block.
    The other two OE product terms are available to the lower half
    of the I/O macrocells in a logic block.
    The next two product terms in each logic block are dedicated
    asynchronous set and asynchronous reset product terms. The
    final product term is the product term clock. The set, reset, OE
    and product term clock have polarity control to realize OR
    functions in a single pass through the array.
    Device
    CY37032V
    CY37064V
    CY37128V
    CY37192V
    CY37256V
    CY37384V
    CY37512V
    200
    167
    154
    143
    X
    X
    125
    100
    X
    X
    83
    66
    X
    X
    X
    X
    X
    X
    X
    X
    X
    X
    Device-Package Offering and I/O Count
    Device
    4
    L
    T
    4
    L
    C
    4
    L
    F
    8
    L
    C
    1
    L
    T
    1
    L
    F
    1
    L
    T
    1
    L
    C
    2
    L
    P
    2
    L
    C
    2
    L
    B
    2
    L
    F
    3
    L
    B
    4
    L
    F
    CY37032V
    CY37064V
    CY37128V
    CY37192V
    CY37256V
    CY37384V
    CY37512V
    37
    37
    37
    37
    37
    69
    69
    69
    85
    69
    133
    125
    133
    133
    165
    165
    165
    197
    197
    197
    197
    165
    269
    269
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