參數(shù)資料
型號: LC5256MB-75FN256I
廠商: Lattice Semiconductor Corporation
文件頁數(shù): 67/99頁
文件大?。?/td> 0K
描述: IC CPLD 256MACROCELLS 256FPBGA
標(biāo)準(zhǔn)包裝: 90
系列: ispXPLD® 5000MB
可編程類型: 系統(tǒng)內(nèi)可編程
最大延遲時間 tpd(1): 7.5ns
電壓電源 - 內(nèi)部: 2.3 V ~ 2.7 V
邏輯元件/邏輯塊數(shù)目: 8
宏單元數(shù): 256
輸入/輸出數(shù): 141
工作溫度: -40°C ~ 105°C
安裝類型: 表面貼裝
封裝/外殼: 256-BGA
供應(yīng)商設(shè)備封裝: 256-FPBGA(17x17)
包裝: 托盤
Lattice Semiconductor
ispXPLD 5000MX Family Data Sheet
3
5000MX. Incoming signals may connect to the global routing pool or the registers in the MFBs. An Output Sharing
Array (OSA) increases the number of I/O available to each MFB, allowing a complete function high-performance
access to the I/O. There are four clock pins that drive four global clock nets within the device. Two sysCLOCK PLLs
are provided to allow the synthesis of new clocks and control of clock skews.
Multi-Function Block (MFB)
Each MFB in the ispXPLD 5000MX architecture can be configured in one of the six following modes. This provides
a flexible approach to implementing logic and memory that allows the designer to achieve the mix of functions that
are required for a particular design, maximizing resource utilization. The six modes supported by the MFB are:
SuperWIDE Logic Mode
True Dual-port SRAM Mode
Pseudo Dual-port SRAM Mode
Single-port SRAM Mode
FIFO Mode
Ternary CAM Mode
The MFB consists of a multi-function array and associated routing. Depending on the chosen functions the multi-
function array uses up to 68 inputs from the GRP and the four global clock and reset signals. The array outputs
data along with certain control functions to the macrocells. Output signals can be routed internally for use else-
where in the device and to the sysIO banks for output. Figure 2 shows the block diagram of the MFB. The various
configurations are described in more detail in the following sections.
Figure 2. MFB Block Diagram
To Routing
Reset
CLK0
CLK3
CLK1
CLK2
PTOE
Sharing
To
I/O
via
OSA
Cascade
In
Cascade Out
Multifunction Array
True Dual Port
RAM
(8,192 bit)
Pseudo Dual
Port RAM
(16,384 bit)
Single Port
RAM
(16,384 bit)
FIFO
(16,384 bit)
Ternary CAM
(128*48)
Logic
(68 Input * 164 Product
Term Array, 32 MC)
32
Feedback
Signals
SELECT
DEVICES
DISCONTINUED
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