UDA1338H Просмотр технического описания (PDF) - Philips Electronics

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UDA1338H

Multichannel audio coder-decoder

Philips Electronics 

Philips Semiconductors

Multichannel audio coder-decoder

Preliminary specification

UDA1338H

1 FEATURES

1.1 General

• 2.7 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 to 100 kHz

– Voice ADC: fs = 7 to 50 kHz

– Audio DAC: fs = 16 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.

• 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.

2 APPLICATIONS

• Excellently suitable for multichannel home audio-video

application.

1.2 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.

1.3 Digital sound processing

• Control via L3-bus or I2C-bus:

– Channel independent digital logarithmic volume

– Digital de-emphasis for fs = 32, 44.1, 48 or 96 kHz

– Soft or quick mute

– Output signal polarity control.

1.4 Advanced audio configuration

• Inputs:

– 4 single-ended audio inputs (2 × stereo) with

programmable gain amplifiers

– 1 single-ended voice input

3 GENERAL DESCRIPTION

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, 20 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.

4 ORDERING INFORMATION

TYPE

NUMBER

UDA1338H

NAME

QFP44

PACKAGE

DESCRIPTION

plastic quad flat package; 44 leads (lead length 1.3 mm);

body 10 × 10 × 1.75 mm

VERSION

SOT307-2

2002 Nov 21

3

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