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LA-MACHXO bảng dữ liệu(PDF) 4 Page - Lattice Semiconductor |
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LA-MACHXO bảng dữ liệu(HTML) 4 Page - Lattice Semiconductor |
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4 / 77 page  February 2007 Data Sheet DS1003 © 2007 Lattice Semiconductor Corp. All Lattice trademarks, registered trademarks, patents, and disclaimers are as listed at www.latticesemi.com/legal. All other brand or product names are trademarks or registered trademarks of their respective holders. The specifications and information herein are subject to change without notice. www.latticesemi.com 2-1 DS1003 Architecture_01.2 Architecture Overview The LA-MachXO family architecture contains an array of logic blocks surrounded by Programmable I/O (PIO). Some devices in this family have sysCLOCK PLLs and blocks of sysMEM™ Embedded Block RAM (EBRs). Fig- ures 2-1, 2-2, and 2-3 show the block diagrams of the various family members. The logic blocks are arranged in a two-dimensional grid with rows and columns. The EBR blocks are arranged in a column to the left of the logic array. The PIO cells are located at the periphery of the device, arranged into Banks. The PIOs utilize a flexible I/O buffer referred to as a sysIO interface that supports operation with a variety of inter- face standards. The blocks are connected with many vertical and horizontal routing channel resources. The place and route software tool automatically allocates these routing resources. There are two kinds of logic blocks, the Programmable Functional Unit (PFU) and the Programmable Functional unit without RAM (PFF). The PFU contains the building blocks for logic, arithmetic, RAM, ROM, and register func- tions. The PFF block contains building blocks for logic, arithmetic, ROM, and register functions. Both the PFU and PFF blocks are optimized for flexibility, allowing complex designs to be implemented quickly and effectively. Logic blocks are arranged in a two-dimensional array. Only one type of block is used per row. In the LA-MachXO family, the number of sysIO Banks varies by device. There are different types of I/O Buffers on different Banks. See the details in later sections of this document. The sysMEM EBRs are large, dedicated fast memory blocks; these blocks are found only in the larger devices. These blocks can be configured as RAM, ROM or FIFO. FIFO support includes dedicated FIFO pointer and flag “hard” control logic to minimize LUT use. The LA-MachXO architecture provides up to two sysCLOCK™ Phase Locked Loop (PLL) blocks on larger devices. These blocks are located at either end of the memory blocks. The PLLs have multiply, divide, and phase shifting capabilities that are used to manage the frequency and phase relationships of the clocks. Every device in the family has a JTAG Port that supports programming and configuration of the device as well as access to the user logic. The LA-MachXO devices are available for operation from 3.3V, 2.5V, 1.8V, and 1.2V power supplies, providing easy integration into the overall system. LA-MachXO Automotive Family Data Sheet Architecture |
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