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參數(shù)資料
| 型號(hào)： | XCR3256XL-10TQ144I |
| 廠商： | XILINX INC |
| 元件分類： | PLD |
| 英文描述： | 256 Macrocell CPLD |
| 中文描述： | EE PLD, 10 ns, PQFP144 |
| 封裝： | TQFP-144 |
| 文件頁數(shù)： | 4/10頁 |
| 文件大?。?/td> | 257K |
| 代理商： | XCR3256XL-10TQ144I |
DS013 (v1.2) May 3, 2000
Preliminary Product Specification
R
Timing Model
The XPLA3 architecture follows a simple timing model that
allows deterministic timing in design and redesign. The
basic timing model is shown in
Figure 2
. One key feature of
the XPLA3 CPLD is the ability to have up to 48 product term
inputs into a single macrocell and maintain consistent tim-
ing. This is achieved through the use of a fully populated
PLA (Programmable AND Programmable OR Array) which
also has the ability to share product terms and only use the
required amount of product terms per macrocell. There is a
fast path (T
LOGI1
) into the macrocell which is used if there is
a single product term. The T
LOGI2
path is used for multiple
product term timing. For optimization of logic, the XPLA3
CPLD architecture includes a Fold-back NAND path
(T
LOGI3
). There is a fast input path to each macrocell if used
as an Input Register (T
FIN
). XPLA3 also includes universal
control terms (T
UDA
) that can be used for synchronization of
the macrocell registers in different logic blocks. There is
also slew rate control and output enable control on a per
macrocell basis.
Figure 2:
XPLA3 Timing Model
T
IN
T
F
T
OUT
T
EN
T
SLEW
T
LOGI1,2
DLT
Q
CE
S/R
T
LOGI3
T
FIN
T
GCK
T
UDA
DS017_02_042800
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| XCR3256XL-10TQ144I0770 | 制造商:Xilinx 功能描述: |
| XCR3256XL-10TQG144C | 制造商:Xilinx 功能描述:CPLD COOLRUNNER XPLA3 6K GATES 256 MCRCLLS 125MHZ 0.35UM 3.3 - Trays 制造商:Xilinx 功能描述:XCR3256XL-10TQG144C |
| XCR3256XL-10TQG144I | 制造商:Xilinx 功能描述:CPLD COOLRUNNER XPLA3 6K GATES 256 MCRCLLS 125MHZ 0.35UM 3.3 - Trays 制造商:Xilinx 功能描述:XLXXCR3256XL-10TQG144I IC SYSTEM GATE |
| XCR3256XL-12CS280C | 制造商:Xilinx 功能描述:CPLD COOLRUNNER XPLA3 6K GATES 256 MCRCLLS 100MHZ 0.35UM 3.3 - Trays |
| XCR3256XL-12CS280I | 制造商:Xilinx 功能描述:CPLD COOLRUNNER XPLA3 6K GATES 256 MCRCLLS 100MHZ 0.35UM 3.3 - Trays |
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