Philips UDA1321
The UDA1321 is a stereo CMOS digital-to-analog bitstream converter designed for USB-compliant audio playback devices and multimedia audio applications.The UDA1321 is an adaptive asynchronous sink USB audio device with a continuous sampling frequency (fs) range from 5 to 55 kHz. It contains a USB interface, an embedded microcontroller and an Asynchronous Digital-to-Analog Converter (ADAC). The USB interface is the interface between the USB, the ADAC and the microcontroller.FEATURES
General● Universal Serial Bus (USB) stereo Digital-to-Analog Converter (DAC) system with adaptive (5 to 55 kHz) 20-bits digital-to-analog conversion and filtering
● USB-compliant audio and Human Interface Device (HID)
● Supports 12 Mbits/s full-speed serial data transmission
● Supports multiple audio data formats (8, 16 and 24 bits)
● Supports headphone and line output
● Fully automatic ‘Plug-and-Play’ operation
● High linearity
● Wide dynamic range
● Superior signal-to-noise ratio (typical 95 dB)
● Low total harmonic distortion (typical 90 dB)
● 3.3 V power supply
● Efficient power management
● Low power consumption
● On-chip master clock oscillator, only an external crystal is required
● Partly programmable USB descriptors and configuration via I2C-bus. Sound processing
● Separate digital volume control for left and right channel
● Soft mute
● Digital bass and treble tone control
● External Digital Sound Processor (DSP) option possible via standard I2S-bus or Japanese digital I/O format
● Selectable clipping prevention
● Selectable Dynamic Bass Boost (DBB)
● On-chip digital de-emphasis.