Innovative semiconductor image, audio, embedded modem, and video surveillance applications solutions, a leading provider Conexant Systems, Inc. (NASDAQ: CNXT) the introduction of audio playback chip KX1400, by an on-chip digital audio processor and D The class driver plays 8KHz audio data directly in the external speaker. As the first product in Conexant's audio playback product line, KX1400 has been acquired by Keterex, a mixed-signal integrated circuit and system developer.
Conexant's audio playback product line is ideal for most applications that require audio playback of prerecorded data. Whether it is a vending machine, toy or crosswalk signal and interactive automatic service inquiry machine, Conexant's easy-to-use audio playback device is an excellent way to integrate audio functions into various devices and household appliances, greatly improving the user experience .
In terms of functionality, the KX1400 reads audio data from an external microcontroller (MCU) or external non-volatile random access memory (NVRAM). The on-chip audio processor and integrated Class D amplifier provide high-quality audio without consuming additional components. The low-power CMOS technology and standby power-saving state make Conexant's audio player ICs ideal for battery-powered applications.
Dr. Sailesh ChitTIpeddi, President and CEO of Conexant Systems, said: "Conexant has a long history of innovation in audio technology and proven expertise in designing solutions that meet user needs. We have found that in many cases, Users are committed to developing applications that require simple audio playback functions to small MCUs. The KX1400 is specifically designed for this, and does not require user driver and firmware support related to the highly integrated audio subsystem chip, so it does not require high overhead costs, making It is ideal for these applications. "
KX1400 supports 12-bit PCM and 4-bit IMA ADPCM data formats, and has a built-in audio generator that can generate 4096 different frequencies. The on-chip audio processor reduces the need for external low-pass filters in many situations. KX1400 can run in stand-alone mode or connected to an MCU host. Audio data is provided to the KX1400 from the external serial memory programmed by the user or the host MCU. Under the control of the MCU, the user can select phrases or audio sequences to play from the external storage, and control or input the audio data to the on-chip audio processor to play the audio sequences. No MCU is required in stand-alone mode. When resetting, the KX1400 plays a phrase from the external storage and then returns to the standby power saving state.
Other features include:
On-chip audio generator Operates in stand-alone mode or as an MCU external device Integrated Class D speaker driver No external low-pass filter required On-chip oscillator – no XTAL required
Configurable general-purpose clock output Two general-purpose digital outputs Low-power stand-alone state (1 μA Typ.)
Operating voltage: 2.7V to 5.5V
Operating temperature: -40 ° C to 85 ° C
24-pin 4X4mm QFN (KX1400EG) package
Jim Divine, President of Keterex, said: "Conexant focuses on audio technology, has a broad and growing product portfolio, and is an ideal partner for our existing KX1400 users."
Availability and pricing A complete evaluation kit with reference boards and all necessary technical documents and software are now available. When the KX1400 is ordered in batches of 100 pieces, the price of a single piece is $ 1.56.
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