IN618 SMULL

Real-time wireless networking is finally possible.

SMULL (Synchronous Multi-node Ultra Low-Latency) technology is InPlay’s global patented technology that provides real-time wireless networking with millisecond latency for excellent reliability and robustness.

The technology enables and can scale up to 128 wirelessly connected network nodes while maintaining ultra-low communication latency over the 2.4GHz ISM frequency band. It enables true real-time communication for a variety of wireless networking applications such as AR/VR, collaborative robotics, and fieldbus cable replacement applications.

The “Ultra-Low-Latency” Leader

SMULL significantly cuts down communication latency between multiple nodes in a star network. It is the only SoC that delivers true low latency in one-to-many wireless architectures.

Built-in Adaptive Frequency Hopping

The IN618 automatically monitors communication quality and dynamically adjusts to a new channel if SNR drops. This ensures consistent, high-quality information transmission.

Next Level Audio & Gaming

The IN618 is an ideal candidate for latency-critical applications in audio and gaming. Help your users experience next-level immersion with real-time wireless communication powered by SMULL.

Core Features

InPlay SMULL Protocol

InPlay proprietary synchronous multi-node communication protocol with ultra-low latency (over-the-air wireless packet travel time) through TDMA and FDMA mechanism
Bi-directional communication
Up to 128 nodes in a single network
Unicast/multi-cast/broadcast mode support
PHY rate configurable
User data payload configurable
Adaptive frequency hopping
Hierarchical network support

CPU & Memory

ARM Cortex-M4F up to 64MHz with 16KB i-cache
256KB ROM (bootloader & SW stack)
Up to 96KB user SRAM
4Kb eFuse memory (Manufacturer ID, Security Key storage)
512KB Flash memory (Stacked, XIP mode support)
Over-The-Air Update (OTA) support
SWD/JTAG debug interface

Radio

2.4GHz ISM band RF transceiver
Rx sensitivity –97.5 dBm @ 1Mbps
Rx sensitivity –94.5 dBm @ 2Mbps
Tx output 0dBm, 4.9mA, up to +3 dBm
Rx 5mA
MedRadio Band Support (2360MHz~2400MHz)

Peripheral

Up to 30 GPIOs
Two I2C, master/slave up to 1MHz clock
SPI master w/ up to 4 SPI slaves supported, up to 16MHz
SPI slave, up to 8MHz
Two UART up to 2MHz
Five dedicated PWMs, up to 13 PWM through I/O configuration
I2S master and 1 I2S slave, bi-directional stereo support
2 PDM mono or 1 stereo with clock range from 160KHz – 5.12MHz
ISO7816
Keyboard scanner – up to 14x14 matrix
QDEC
11-bit ADC, up to 64KSPS, up to 11 channels
8 counters/timers

Clock Sources

32MHz crystal, 32.768KHz RTC

DMA Controller

Up to 2 concurrent DMA streams with 2 channels each

Voice Engine

Build-in up to 64KHz sampling ADPCM codec, 4:1 compression ratio with 64Kbps mono, 128Kbps stereo for 16KHz sampling rate
Support PDM to PCM conversion
PDM or I2S as input
Sigma-delta audio DAC