UDA1338H
Multichannel audio coder-decoder
The UDA1338H is a single-chip consisting of 4 plus 1 analog-to-digital converters and 6 digital-to-analog converters with signal processing features employing bitstream conversion techniques. The multichannel configuration makes the device eminently suitable for use in digital audio equipment which incorporates surround feature.
The UDA1338H supports conventional 2 channels per line data transfer conformable to the I2S-bus format with word lengths of up to 24 bits, the MSB-justified format with word lengths of up to 24 bits and the LSB-justified format with word lengths of 16 bits, 20 bits and 24 bits, as well as 4 to 6 channels per line transfer mode. The device also supports a combination of the MSB-justified output format and the LSB-justified input format. The UDA1338H has special sound processing features in the Direct Stream Digital (DSD) playback mode, de-emphasis, volume and mute which can be controlled via the L3-bus or I2C-bus interface.

Features and benefits

2.1 General

2.7 V to 3.6 V power supply
5 V tolerant digital inputs
24-bit data path
Selectable control: via L3-bus or I2C-bus microcontroller interface
Supports sample frequency ranges for:
Audio ADC: fs = 16 kHz to 100 kHz
Voice ADC: fs = 7 kHz to 50 kHz
Audio DAC: fs = 16 kHz to 200 kHz
Separate power control for ADC and DAC
ADC plus integrated high-pass filter to cancel DC offset
Integrated digital filter plus DAC
Slave mode only applications
Easy application

Multiple format data interface

Audio interface supports standard I2S-bus, MSB-justified, LSB-justified and two multichannel formats
Voice interface supports I2S-bus and mono channel formats

Digital sound processing

Control via L3-bus or I2C-bus:
Channel independent digital logarithmic volume
Digital de-emphasis for fs = 32 kHz, 44.1 kHz, 48 kHz or 96 kHz
Soft or quick mute
Output signal polarity control

Advanced audio configuration

Inputs:
4 single-ended audio inputs (2 × stereo) with programmable gain amplifiers
1 single-ended voice input
Outputs:
6 differential audio outputs (3 × stereo)
DSD mode to support stereo DSD playback
High linearity, wide dynamic range and low distortion
DAC digital filter with selectable sharp or soft roll-off

应用
Excellently suitable for multichannel home audio-video application