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Renesas Introduces New I3C Basic Technology

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What is the new I3C Basic Technology launched by the Company?

Renesas Electronics Corporation (TSE:6723), a premier supplier of advanced semiconductor solutions, today unveiled four new I3C Basic bus extension products for control plane designs across a spread of applications, including data center and server applications, also as an enterprise, factory automation, and communications equipment. The new products include the IMX3102 2:1 bus multiplexer, IMX3112 1:2 bus expander, and IXP3114 and IXP3104 1:4 general-purpose IO expanders, which support up to 12.5MHz speeds also as integrated thermal sensor capability.

These new products provide maximum design flexibility for engineers implementing I3C Basic as a system management bus in applications where there could also be multiple masters, an outsized number of endpoint devices, and long traces – all of which may impact bus complexity and signal integrity. The integrated thermal sensor allows for better integration of thermal management into the bus design itself and may reduce the amount of dedicated thermal sensor endpoints. Next-generation computer architectures are leading the transition to I3C because of the system management bus of choice following the JEDEC standard adoption of I3C Basic for the DDR5 memory sideband. the rise in memory subsystem complexity with distributed power management, telemetry, and thermal management at the sub-channel level requires higher sideband bus bandwidth.

i3c basic working
working of i3c technology image credit

Furthermore, emerging needs for advanced thermal control loops, security and component authentication, and more robust fault tolerance and recovery are driving similar needs for a high bandwidth interface across the whole server control plane. I3C Basic provides a perfect solution to serve all of those needs. It enables system management architectures to supply granular information about the server resource status during bootup and runtime. this enables system managers to implement effective workload migration and server load balancing to significantly optimize server utilization.

“The complexity of intelligent platform management in modern data center equipment has finally outstripped the capabilities of decades-old interfaces like I2C and SMBus,” said Rami Sethi, vice chairman, Data Center Business Division at Renesas. “We are excited to supply a whole lineup of I3C bus extension devices for large-scale, high-speed control plane designs that enable sophisticated capabilities for environmental control, advanced telemetry, security, and fault recovery.”

Renesas I3C Basic Expanders

The IMX3102 2:1 bus multiplexer is compatible with designs where there could also be two masters controlling one peripheral or slave device. The IMX3112 1:2 bus multiplexer supports designs where one host is controlling two peripheral or slave devices. The general-purpose IO expanders, IXP3114 (with temperature sensor) and IXP3104 1:4 (no temperature sensor), are designed for a number controller with up to four peripheral or slave devices.

Unexpected motherboard temperature increases may result in costly system failures. Positioning temperature sensors in multiple locations on the motherboard allows engineers to continuously monitor for potential temperature spikes and direct the CPU to require action as required to stop a catastrophic event. The new I3C products feature integrated temperature sensors, reducing overall system costs, and improving integration.

Additional features include:

  • Two-wire programmable I2C or I3C Basic bus serial interface
  • Single device load on the host bus
  • Single 1.8V input power supply
  • Integrated temperature sensor accuracy: 0.5°C with 0.25°C resolution
  • Industrial temperature range: -40°C to 125°C
  • Packet error check and parity error check functions
  • Bus reset and bus clear functions
  • In-band interrupt
  • Programmable I2C, I3C Basic bus address
  • 2mm x 3 mm, thermally enhanced 9-pin PSON-8 package
  • With the new I3C products, Renesas now offers an entire portfolio of I3C and I2C devices.


source: electronics maker

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