KMBT012

KMBT012

E.A.’s Model:
KMBT012A (BCM20741)
KMBT012B (BCM20742)
KMBT012C (BCM20745)
KMBT012D (BCM20741 Classl.5)
KMBT012E (BCM20742 Classl.5)
KMBT012F (BCM20745 Classl.5)

Approval Memo:
V1.1

Device Features
  • Single-chip Bluetooth 3.0 transceiver supporting Bluetooth 2.1 + Enhanced
  • Data Rate (EDR) and
  • Bluetooth 2.0, 1.2, and 1.1 backward compatibility
  • Support for side tone and digital microphones
  • Supports microphone and speaker equalization
  • High-performance ARM Cortex.-M3 processor
  • On-chip SRAM and ROM
  • Extensive configuration tool for application differentiation and audio path tuning
  • Integrated SmartAudio algorithms for dual microphone
    – Noise suppression
    – Echo suppression
    – Wind-noise suppression
    – Packet-loss concealment
    – Bit-error concealment
    – Speech-intelligibility enhancement
    – Automatic gain control (AGC) and automatic volume control (AVC)
  • UART and UART over USB adaptor for test and configuration
  • Switching regulator, battery charger and power management unit
  • Supports fast charging, power dissipation monitoring, and optional charger voltage regulation
  • High quality 8 kHz and 16 kHz audio codec with a dual microphone interface
  • Low power operation
  • Fully-featured and configurable mono headset application firmware built on
  • Broadcom.s Bluetooth for embedded (BTE) audio stack
  • Infinite Shelf Life Extension support
  • Multilanguage voice prompt
  • A2DP over mono(KMBT012C/F Version)
  • Advanced multipoint
  • Pairing enhancements
  • Surface-mount, Size: 13.30×10.50×1.80mm max
General Description
  • The K-mate KMBT012 is a Bluetooth monolithic Module solution for dual microphone mono headset applications with radio, baseband, application ROM, power management, mono dualmicrophone codec, and many other components typically required for low cost headset designs, making it ideal for low-cost, footprint challenged headset designs.
  • The KMBT012 also delivers differentiating features including enhanced audio quality, and reduced charging times, and multipoint connections through the integration of various noise suppression technologies, circuitry, and application profiles.
  • It is a ROM-based noise and echo reduction headset, enabling a revolutionary reduction in the bill of materials (BOM) for high-end and midrange mono headsets.
  • The KMBT012 is designed for enabling features and audio quality that are usually available only for high-end products, but at a fraction of the cost of existing solutions.
  • The KMBT012 supports the Bluetooth 3.0 standard, adding enhanced power control, simple and secure pairing, and enhanced inquiry response as value-added features for Bluetooth headsets. All major functional blocks required for a mono headset, including PMU, charger, and audio codec are integrated into a single package providing low system cost, ease of implementation and high product yields.
KMBT012
Applications
  • Headsets
  • Automotive Hands-Free Kits
  • General purpose Bluetooth systems requiring an on-chip audio CODEC
  • Mono Headset Solution with Advanced Echo and Noise Cancellation
  • Low-cost speakerphones and car-kits(KMBT012C/F Version)
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