Reconfigurable I/O

Lightspeed Logic's mask-reconfigurable I/O are designed to your requirements and can provide a wide variety of possible input, output, and bi-directional signaling capabilities. Lightspeed Logic can support single-ended only I/O, differential only I/O, or a twin-pad design that supports either single-ended or differential standards.  The users specify options for the following I/O cell attributes:

• Input Types
• Input Level
• Special Input Options
• Output Type
• Output Drive
• Output Slew Rate
• Special Output Options

High-Performance Digital I/O

Available I/O types can include 1.2, 1.5, 1.8, 2.5V or 3.3V LVCMOS, LVTTL, PCI3 and PCI-X depending on the required process. Output drive strengths for LVCMOS and LVTTL range from 2 to 16mA and selectable slew rates. Slew rate-controlled buffers improve switching performance and minimize ground bounce in non-critical paths.

High-Speed Analog I/O

Lightspeed Logic's mask-reconfigurable I/O include specialized high-performance I/O structures that may be used on any/all of the I/O pads. These provide for HyperTransport, LVDS, LVPECL, SSTL-18, HSTL-18, HSTL, SSTL2 and SSTL3 signaling compatibility.

Additional Features

• Supports flexible power-up sequence, hot swap, and high voltage tolerance
• Optional pullup, pulldown or bus-keeper
• Built-in input hysteresis, differential input fail-safe
• Programmable power-save mode and IDDQ test
• Boundary scan registers for test

Silicon Proven

Lightspeed Logic's mask-reconfigurable I/O can be ported to any dual-oxide process. The I/O are silicon proven and characterized in TSMC 0.13u process. A test chip is available. Please contact Lightspeed Logic for additional information.

Supporting Documents Available in PDF

• Lightspeed Logic 0.13u Mask-Reconfigurable I/O Data Sheet
• Lightspeed Logic 0.13u I/O Libraries

Contact sales@lightspeed.com for more information.

Supported I/O Standards Table

The mask-reconfigurable I/O cells may be designed to support a wide variety of I/O signaling standards. The mask-reconfigurable I/O are not compatible or compliant with 5V I/O standards (not 5V tolerant).