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M5-512/192-10VI Datasheet(PDF) 4 Page - Lattice Semiconductor |
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M5-512/192-10VI Datasheet(HTML) 4 Page - Lattice Semiconductor |
4 / 47 page ![]() 4 MACH 5 Family Advanced power management options allow designers to incrementally reduce power while maintaining the level of performance needed for today’s complex designs. I/O safety features allow for mixed-voltage design, and both the 3.3-V and the 5-V device versions are in-system programmable through an IEEE 1149.1 Test Access Port (TAP) interface. FUNCTIONAL DESCRIPTION The MACH 5 architecture consists of PAL blocks connected by two levels of interconnect. The block interconnect provides routing among 4 PAL blocks. This grouping of PAL blocks joined by the block interconnect is called a segment. The second level of interconnect, the segment interconnect , ties all of the segments together. The only logic difference between any two MACH 5 devices is the number of segments. Therefore, once a designer is familiar with one device, consistent performance can be expected across the entire family. All devices have four clock pins available which can also be used as logic inputs. The MACH 5 PAL blocks consist of the elements listed below (Figure 2). While each PAL block resembles an independent PAL device, it has superior control and logic generation capabilities. x I/O cells x Product-term array and Logic Allocator x Macrocells x Register control generator x Output enable generator I/O Cells The I/Os associated with each PAL block have a path directly back to that PAL block called local feedback. If the I/O is used in another PAL block, the interconnect feeder assigns a block interconnect line to that signal. The interconnect feeder acts as an input switch matrix. The block and segment interconnects provide connections between any two signals in a device. The block feeder assigns block interconnect lines and local feedback lines to the PAL block inputs. 4 CLK Block: 16 MCs Segment: 4 Blocks Segment Interconnect 20446G-001 Figure 1. MACH 5 Block Diagram |
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