LPC (Low Pin Count) Bus Controller

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Reference Design LogoThe Lattice LPC Bus Controller Reference Design implements a LPC host and a LPC peripheral that support the seven required LPC control signals. The design is implemented in Verilog or VHDL and Lattice design tools are used for synthesis, place and route, and simulation. The design can be targeted to multiple Lattice device families, and its small size makes it portable across different FPGA/CPLD architectures. This reference design is based on the Intel Low Pin Count Interface Specification (version 1.1).

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Performance and Size

Tested Devices* Language Performance I/O Pins Design Size Revision
LPC Host
LCMXO2-1200HC-5MG132CES Verilog >33MHz 50 99 LUTs 1.5
LCMXO2-1200HC-5MG132CES VHDL >33MHz 50 93 LUTs 1.5
LCMXO256C-3T100C Verilog >33MHz 50 109 LUTs 1.5
LCMXO256C-3T100C VHDL >33MHz 50 96 LUTs 1.5
LC4256ZE-5TN100C Verilog >33MHz 50 26 Macrocells 1.5
LC4256ZE-5TN100C VHDL >33MHz 50 26 Macrocells 1.5
LFE3-95EA-7FN1156C Verilog >33MHz 52 107 LUTs 1.6
LFE3-95EA-7FN1156C VHDL >33MHz 52 109 LUTs 1.6
LFXP2-5E-5M132C Verilog >33 MHz 50 119 LUTs 1.6
LFXP2-5E-5M132C VHDL >33MHz 50 119 LUTs 1.6
LPC Peripheral
LCMXO2-1200HC-5MG132CES Verilog >33MHz 52 75 LUTs 1.5
LCMXO2-1200HC-5MG132CES VHDL >33MHz 52 73 LUTs 1.5
LCMXO256C-3T100C Verilog >33MHz 52 75 LUTs 1.4
LCMXO256C-3T100C VHDL >33MHz 52 73 LUTs 1.5
LC4256ZE-5TN100C Verilog >33MHz 52 66 Macrocells 1.4
LC4256ZE-5TN100C VHDL >33MHz 52 66 Macrocells 1.5
LFE3-95EA-7FN1156C Verilog >33MHz 52 96 LUTs 1.6
LFE3-95EA-7FN1156C VHDL >33MHz 52 97 LUTs 1.6
LFXP2-5E-5M132C Verilog >33MHz 52 90 LUTs 1.6
LFXP2-5E-5M132C VHDL >33MHz 52 95 LUTs 1.6

* May work in other devices as well.

Note: The performance and design sizes shown above are estimates only. The actual results may vary depending upon the chosen parameters, timing constraints, and device implementation. See the design's documentation for details. All coding and design work was done on a PC platform unless noted otherwise. 

Documentation

Technical Resources
TITLE NUMBER VERSION DATE FORMAT SIZE
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LPC (Low Pin Count) Bus Controller - Source Code
RD1049 1.6 4/12/2011 ZIP 517.2 KB
LPC (Low Pin Count) Bus Controller Reference Design - Documentation
FPGA-RD-02114 1.7 1/21/2021 PDF 1 MB

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