Cognitive Wireless Gaming Client System on a Chip (SoC)

The SKY76361-31/51 is an ultra-low-power, high performance wireless gaming client SoC that operates in the 2.4 GHz ISM band. It provides a high dynamic range, uncompressed wireless digital audio link with robust interference rejection and excellent coexistence with other 2.4 GHz wireless devices (such as Wi-Fi).

The embedded wireless communication system is known as UL2X and supports multiple over-the-air (OTA) usage scenarios with different numbers of channels, audio bandwidth, data bandwidth, and numbers of clients. The digital audio interface over I2S supports up to 24-bit, 96 kHz PCM digital audio. The OTA audio link features a low, fixed latency of <4 ms while rejecting the multitude of possible interference sources in the 2.4 GHz band. The link provides up to 120 dB dynamic range and up to 40 kHz audio bandwidth. Audio is inherently synchronized between clients in the network with <1 us latency difference.

The SKY76361-31/51 includes a configurable Audio Processing Unit (APU) to support equalization, dynamic range control, feathering and mixing.

The SKY76361-31/51 wireless communication system also provides a low latency (<5 ms)1 data transport and special ultra-low latency (1 ms) HID data transport for wireless mice, keyboard, and gaming controller applications. Data input is handled through a high-bitrate UART and high priority OTA data protocol.

The SKY76361-31/51 SoC is designed to support multiple system applications. The system interfaces for digital I/O, RF, power management, and intra-chip communication are designed to provide a streamlined system solution with minimal external components.


DescriptionCognitive Wireless Gaming Client System on a Chip (SoC)


  • Low power consumption:
    • Quiescent power <900 μW
    • Standby power (I2C activity) <100 μW
    • Reset power <6 μW
  • High incremental output efficiency: 84% (62 mW O/P to 16Ω)
  • High quality audio performance:
    • DNR > 110 dB (A-wt)
    • THD+N: –79 dB
    • PSRR: –94 dB (<5 kHz)
  • Low latency: < 5 μS
  • Supply voltage inputs:
    • VBAT (3.3V to 4.9V)
    • VDDIO (1.2V to 1.8V)
  • Internally generated low-voltage supplies
  • Operating Modes:
    • Reset
    • Standby
    • Audio playback
    • Two output gain modes, 0 dB (Normal) and +6 dB (High)
    • Fault
  • PDM interface
    • 3.072 MHz PDM Clock, mono 1-bit PDM Data
    • 3.072 MHz PDM Clock, stereo 1-bit PDM Data
    • 3.072 MHz PDM Clock, 1.5-bit mono PDM Data
    • 6.144 MHz PDM Clock, 1.5-bit stereo PDM Data

Product Documents


Wireless Audio/Video

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Smart Audio

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