MachXO2 System Applications

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System designers are faced with continual pressure to meet their development schedules, and need to implement control functions in complex circuit boards in applications found in the telecom infrastructure, computing, high end industrial and medical markets, with minimal effort and risk while maintaining maximum flexibility. By using a programmable-based approach for their designs, designers can accelerate their time-to-market, address system cost and space reduction and ensure a high level of product differentiation.

MachXO2 devices offer you the benefits of increased system integration, improved system robustness and reduced static power consumption and can be used to implement system functions such as temperature measurement, voltage monitoring, power supply sequencing, fan control and power supply fault logging. In addition, MachXO2 devices include hardened implementations of some of the most popular functions used in system applications such as User Flash Memory (UFM), I²C, SPI and timer/counter.

The table below shows the system design requirements and MachXO2 benefits.

System Design Requirement	MachXO2 Benefit
Large number of low cost I/O	Triple staggered I/O increases total I/O count Asymmetrical banking scheme maximizes I/O usage Low cost BGA packages reduce cost per I/O
Robust design	Sub 1ms instant-on ensures precise control during system boot-up Input hysteresis provides reliable operation in noisy environment Operate from single 3.3/2.5/1.2V power supply Single chip with no external configuration device
Reduce board area through functional integration	Integrate external board components using UFM On-chip oscillator On-chip voltage regulator Hardened I²C, SPI, timer/counter

The table below shows common system applications and MachXO2 functions.

System Designs
Application	MachXO2 PLD Function
Thermal management	Ensure PCB temperature is maintained
Power supply sequencing and reset distribution	Monitor multiple power supply voltage and current levels Distribute reset signals Sequence power supplies
Voltage monitoring	Monitor sensors and power rails of a system Replace discrete ADCs using Delta Sigma ADC
Power supply fault logging	Monitor and keep a log of power supply failures Maximize system reliability by monitoring devices for marginal power supply failures
Fault isolation on long JTAG chains	Partition complex JTAG chains using BSCAN Detect and isolate faults efficiently and cost effectively
Interface to Compact Flash memory	Provide simple plug-in memory

The examples below illustrate how MachXO2 PLDs are being used in system designs.

Thermal Management Using Fan Control	Fault Isolation Using BSCAN Linker

Power Supply Fault Logging	Voltage Monitoring Using Delta Sigma ADC

For more information refer to:
White paper: Using Low Cost, Non-Volatile PLDs in System Applications
TN1205: Using User Flash Memory and Hardened Control Functions in MachXO2 Devices
AN8082: USB Programming and Circuit Guide
AN8083: Linking or Selecting Ports with BSCAN

MachXO2 System Applications

In Detail

Documents & Downloads

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