DS4201

The DS4201 Universal Serial Bus (USB) audio device is a complete interface solution for USB based PC digital audio playback. Integrating a USB device core, stereo 16bit sigmadelta DAC and fixed function DSP processing, as shown in Figure 1, the DS4201 is designed specifically for USB digital speaker implementations. Digitaltoanalog audio data processing supports 8 and 16bit PCM stereo/mono formats at 44.1 KHz and 48.0 KHz sampling rates. Additionally, analog output mixing of line and microphone inputs provide legacy and hybrid speaker capabilities.

The DS4201 USB function core fully complies with both the USB Specification v1.0 and the USB Device Class Definition for Audio Devices v1.0. To complete the USB capability of the DS4201, a USB compliant transceiver is integrated to eliminate the need for any additional support chips. Organization of the DS4201 in an USB context is shown in Figure 2. For the USB enabled PC, the DS4201 is an ideal digital output solution for high quality audio and control within the speaker or monitor enclosure. Its USB control and capabilities as well as its high quality audio characteristics also comply with next generation PC system and audio standards put forth by industry leaders.