DBMD4Plus is an ultra-low power voice and sensor processor for battery-operated devices such as mobile handsets, IoT, wearables, etc. DBMD4Plus implements various applications such as voice trigger (VT), voice authentication (VA), voice command (VC), sensor data processing, and equalizer functionality.DBMD4Plus is based on the TeakLite-III™ DSP processor. The chip is equipped with the relevant interfaces to communicate with other devices in the system, such as the application processor (AP), Codec, microphones and sensors.
大大通参考设计方案 小體積超低功耗語音喚醒耳機方案——帝思DSPG D4P
The high efficiency, low power, fully programmable 32-bit DSP Core provides JTAG debug capability.
864KB RAM memory ,Boot ROM on AHB (cacheable area) is 16KB.
General-Purpose I/O (GPIO):
This unit features:
There are two 32-bit timers, one of which that can be a Watchdog Timer (WDT).
Time Domain Multiplexer (TDM):
There are two TDMs, each of which transfers data between the on-chip DSP and external AP or Codec via a serial interface using a full-duplex, four-wire link. Each TDM is independently configurable.
Digital Microphone (DM) Interface:
System Control Unit (SCU):
The SCU offers an advanced clocking scheme with automatic clock gating control. Advanced low-power Standby and Deep Shutdown modes are supported. Flexible clock management is available for multiple clock domains.
Analog to Digital Converter (ADC):
A low-power ADC is routed through a Programmable Gain Amplifier (PGA) to enable direct connection to an analog acoustic microphone. Features include: