北京航天新兴销售总部 （非本站正式会员）

The WM9714L is a highly integrated input/output device
designed for mobile computing and communications.
The chip is architected for dual CODEC operation, supporting hifi
stereo CODEC functions via the AC link interface, and
additionally supporting voice CODEC functions via a PCM type
Synchronous Serial Port (SSP). A third, auxiliary DAC is
provided which may be used to support generation of
supervisory tones, or ring-tones at different sample rates to the
main CODEC.
The device can connect directly to mono or stereo microphones,
stereo headphones and a stereo speaker, reducing total
component count in the system. Cap-less connections to the
headphones, speakers, and earpiece may be used, saving cost
and board area. Additionally, multiple analogue input and output
pins are provided for seamless integration with analogue
connected wireless communication devices.
All device functions are accessed and controlled through a
single AC-Link interface compliant with the AC’97 standard. The
24.576 MHz masterclock can be input directly or generated
internally from a 13MHz (or other frequency) clock by an on-chip
PLL. The PLL supports a wide range of input clock from
2.048MHz to 78.6MHz.
The WM9714L operates at supply voltages from 1.8V to 3.6V.
Each section of the chip can be powered down under software
control to save power. The device is available in a small
leadless 7x7mm QFN package, ideal for use in hand-held
portable systems.

公司背景及现状

北京航天新兴科技开发有限责任公司成立于 1996年，是一家以集成电路为主要经营产品的电子商务公司。有近20年的IC从业经验，代理、分销近50个品牌，产品应用领域涵盖了工业控制，电力电气，安防监控，通信通讯，汽车电子，仪器仪表等多个领域。多年来公司在总公司的大力支持下，先后在深圳、上海、香港等地设立了分公司及办事处

公司价值观

专业专注，通过渠道控制来保证货物的可追溯性

公司业务特点

（1）     独特的订货渠道，确保价格优势

（2）     专业的服务团队，及时解决市场及技术问题

（3）     大量的现货库存，强大的备货支持

（4）     快速的物流反应能力，保证急需料的及时供应