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P1AFS600 Datasheet(PDF) 18 Page - Microsemi Corporation |
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P1AFS600 Datasheet(HTML) 18 Page - Microsemi Corporation |
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18 / 334 page  Device Architecture 2- 2 R e v ision 2 The system application, Level 3, is the larger user application that utilizes one or more applets. Designing at the highest level of abstraction supported by the Fusion technology stack, the application can be easily created in FPGA gates by importing and configuring multiple applets. In fact, in some cases an entire FPGA system design can be created without any HDL coding. An optional MCU enables a combination of software and HDL-based design methodologies. The MCU can be on-chip or off-chip as system requirements dictate. System portioning is very flexible, allowing the MCU to reside above the applets or to absorb applets, or applets and backbone, if desired. The Fusion technology stack enables a very flexible design environment. Users can engage in design across a continuum of abstraction from very low to very high. Core Architecture VersaTile Based upon successful ProASIC3/E logic architecture, Fusion devices provide granularity comparable to gate arrays. The Fusion device core consists of a sea-of-VersaTiles architecture. As illustrated in Figure 2-2, there are four inputs in a logic VersaTile cell, and each VersaTile can be configured using the appropriate flash switch connections: • Any 3-input logic function • Latch with clear or set • D-flip-flop with clear or set • Enable D-flip-flop with clear or set (on a 4th input) VersaTiles can flexibly map the logic and sequential gates of a design. The inputs of the VersaTile can be inverted (allowing bubble pushing), and the output of the tile can connect to high-speed, very-long-line routing resources. VersaTiles and larger functions are connected with any of the four levels of routing hierarchy. When the VersaTile is used as an enable D-flip-flop, the SET/CLR signal is supported by a fourth input, which can only be routed to the core cell over the VersaNet (global) network. The output of the VersaTile is F2 when the connection is to the ultra-fast local lines, or YL when the connection is to the efficient long-line or very-long-line resources (Figure 2-2). Note: *This input can only be connected to the global clock distribution network. Figure 2-2 • Fusion Core VersaTile Switch (flash connection) Ground Via (hard connection) Legend: Y Pin 1 0 1 0 1 0 1 0 1 Data X3 CLK X2 CLR/ Enable X1 CLR XC* F2 YL |
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